IMPORTANT: When re-greasing the tracks of the loading mechanism, do not copy what I did in the video. Instead, clean off all existing grey grease with a dry cotton swab, then apply fresh white lithium grease. Do not use just any random grease!
Great video. I've had this player since new and a video got stuck just before I moved 12 years ago. After seeing this I managed to get it out and remove the mechanism. Definitely will sit down some point and remove all the old grease and replace it. In hopes the tape will feed around the drum again. At the moment it won't wind the tape around the heads. The parts move easily by hand but not mechanically. I'm hoping something is just dry as with the mechanism out I didn't see any broken teeth and there was no parts sitting at the bottom on the main board. But so lovely to see this player in the RUclips spotlight and getting some attention.
Babies and toddlers loved to insert items into VCRs back in the day. I've found money, toys, socks, food and all sorts of other colourful items in VCRs.
Thanks for this excellent video. Managed to remove the transport, using your guide, from an NV-HS950 which I purchased from eBay and did indeed need re-lubrication. The trick with paper to clean the heads safely worked like a charm!
Great video. I love seeing the insides of these machines and how they work. The candy was gross, but at least no one tried to make toast in it! The head cleaning reminds me of the head cleaning cassettes you could get that had the cloth type tape which you would soak in alcohol. I also had one that used these really really soft brushes.
Great job restoring it to working order. I have the same model, it's an excellent quality unit. I had assumed it used an LED display because of the orange colour. Now I come to find out that it's that way because of the tint on the plastic, interesting. I also have (I think) the same model of Sony Trinitron TV shown at the end.
After 29 years, my Panasonic NV-SD3 VCR does not require any lubrication, greasing up of the gears, tracks or realignment. I only investigated whether the unit required a thorough service which it didn't. I didn't even have to blow out any dust, ( something I would never do) , as there was wasn't much of. If there was, I would use a new blusher brush and gently brush away the thin layer of dust towards the back of the unit. I use 91% isopropyl alcohol and two fine cotton wool rounds (not paper, as you can damage the heads and the drum) to clean the tape head and the drum, without touching those delicate components, hence the use of two fine cotton wool rounds. It still works an absolute treat ! 😊By the way, the plastic parts in the mechanism, have not gone a yellow colour yet and still off-white colour.
Paper will not cause any damage to heads or drum. Cotton wool will cause damage if it gets caught in the wrong places. Not touching delicate components means you have not cleaned the full tape path, so likely the cleaning has next to no effect.
This looks like a very nice unit! And it seems easy to service too... From my experiences, top-loader VCRs seem to be more reliable than front-loaders, but I'm sure they are a huge pain to repair when they break!
I think those sweets were probably also shorting something out, I don't know what the electrical resistance of Haribo (or whatever) is, but I'm sure it's no insulator! That's a good way to clean the head drum, I was the one who came up with that method, I remember a long time ago when I tried to clean the heads of an 8mm camcorder using cotton swabs, it ripped one of the heads right out!
CoolDudeClem used to be a common problem with cheap 'head cleaning cassettes' too, the really cheap nasty ones would have loops on the fibre, and would occasionally tear out the entire head :( And resistance of Haribo and similar things: I see the need for a video
Reminds me of a Mitsubishi VCR I have I opened it up a few months ago and the loading belt had completely turned to goo luckily I had a spare parts VCR which was the same model and fixed up a bad solder joint and replaced a DEW sensor and its going good again
Thank you very much! I am just got a tape stuck into a panasonic vhs and the only thing I did was apply a spray oil (wb40) in the (12:55 min) part and the tape eject and play perfectly!!! Thank you so much from Argentina! I was doing a analog to digital vhs converter for a client and got this panasonic, put the tape and doesn´t play and won´t eject.. really worry until found your video!! (sorry for my english!)
yes that's the pinch roller mechanism which is supposed to lift up before the tape is released from the head and wound back into the tape. If it's not lubricated it doesn't move or moves too slowly, throwing the unload sequence out and the tape gets tangled.
VFDs tend to attract dust because of the relative high voltages that they need to turn on segments. Newer ones don't need such higher voltages, but they're not that bright as a result. Also, nice built unit and you're so lucky to find it in that neat shape. All of the old VCRs that I've seen in this "era" are really damaged.
Nice machine. I never saw cleaning video heads like that. I will give it a try on one of mine. I have a Mitsubishi VHS and the big rubber gear belt just melt into a thing looking like a black chewing gum.
I just got a vcr player to watch old videos on and after first video a plastic piece beside the thing that ejects the cassette broke I don’t know if it has anything to do with this but the cassettes gets stuck and doesn’t eject properly and it’s visible especially on the right side. It doesn’t get pushed up same way as left side.. there was only one plastic piece but doesn’t seem to connect to the bigger plastic thing or I don’t know how to put it back, there was also a looped metal wire that came off after.. any clue on how to fix this? It’s a Panasonic NV-HD620
What's the component with the brass head next to the erase head is it just a guide post. It was causing problems for me, not sure if it's loose and you have to tighten it or just squirt some lithium spray in there. Also the part next to the pinch roller with the big white plastic head I had to turn a few times since it was making a squeeking noise when I run a tape through it.
Hello doc! Long time not bothering you. I had a question for you: in your experience how good or bad are the internal TBC's of these Panasonics? I ask you because of the AG4700 I have. I made some captures and when the TBC is on, the sound ain't exactly right. Some parts speed's it up. It's ok MOST of the video, but aint perfect. So, since I have anothers AG4700 (for parts) I took the working deck from the first one and put it into another AG4700. Now it has color issues. The colors just look weird and off. I mean trully off, green looks cyan and some colors doesn't even show. So... I took the baseplate and swaped the TBC module from the first deck to this one. Now colors are back. Seems that TBC module from the second one has some issues. The question is: This TBC module (VEP03A53), has 8 variable resistors: DIG. C LEVEL, W.B1, W.B2, R-Y LEVEL, 1HDL GAIN, TBC SYNC LEVEL, TBC OUT LEVEL, NOISE GATE. Do you think that the color problem of the TBC that was on the second AG4700 could be solved by tweaking some of these resistors? Or I just bet on bad caps? Also, the audio sync problem, could be solved this way? Have you ever tweaked a TBC? I know you will say "if it works, don't mess with it", but I really need this to work properly. Oh and when the good TBC is off, the sound sync is way better!
I haven't looked at TBC modules in this great detail, so I really don't know much. On the module with the bad colour you could try tweaking the R-Y LEVEL as that has something to do with the colour signal. I too have some problems with the TBC in my HS1000. Most of the times, the video has more time base errors with the TBC turned on than with the TBC turned off, so the TBC in my VCR actually tends to make things worse.
S-VHS indeed is great, amost doubles the resolution of standard VHS (420 lines vs. 240 lines). Even better is ED-Beta, the last edition of Sony's Betamax, at 500 lines. But that was only available in the NTSC parts of the world. JVC also created a digital edition of VHS called D-VHS. It records an MPEG2 Transport Stream with a quality better than DVD, and some models will even record HDTV!
Brilliant guide to performing maintenance. Question, for this deck, how do you remove a jammed cassette? The tape is around the capstans, drum, pinch rollers, etc? I can't do the service on the RUclips clip until I can get the jammed tape out.
Hi. I've had one of these from new. I recently found that mine was dead, nothing at all, so I opened it up and had a look at the PSU. I couldn't find any bad looking capacitors, but I noticed there was a fuse. I tested it and it was dead. I put a new fuse in and when I applied power, it blew immediately. Could you suggest what may have gone wrong in the PSU or perhaps give some idea of how I can troubleshoot it? Thanks!
who in there right mind would dump this? I bought my 900 in 1995 now 21 years old and still looks mint and working as new, cost me £450 new best money ever spent, used to use a lot as a music recorder back in the 90s.
do you service vcr's? i have a Sony SLV-N50, when playing a movie alot of times the picture is a little blurry, i adjust the tracking but it dont help much also when i rewind while its playing it will start to eat the tape after about 10 seconds
Hi, I have a vasonic panasonic with the same mechanics, it presents the error F04 in the display, the tape aguarra in the input, to pull until the head goes normal, but when it comes back it gets stuck, in both situations have to force the mechanics to go, what can it be?
Doc, quick question. I got an AG-W1. I already rebuilded the PSU. Works and plays fine, but the picture shows noise ( it's black/white lines in the upper middle of the screen) in the same place. Could be the head or should I try something else?
My Panasonic SD 350 is not playing, forward and backward. i have not used it since last 15 years and i think it is jammed with moisture. How can i get k deck mechanism out and clean it ?
recently bought one of these. runs okay when cold but mechanism starts to stick when attempting to load or unload a cassette. will go in and out of the machine but when wrapping tape around drum u can hear the motor spin but somthing slipping. get error f3 or f4. had the mechanism apart bur cant see any obvious faults with gears. any ideas?
I have NV-HS1000. Super machine! You can't beat old Panasonics. Even older Panasonic VHS models from the 80's, intended for home use, were very heavy duty. Although I don't understand how does one get a candy inside of a high quality machine like the HS900. Must have been rich family with spoiled kids. My father would have given me something to think about if I'd done that to his VCR...
Since the candy was still inside the machine I guess the parents never found out about it. I too have an NV-HS1000, labeled as a Metz though. Awesome machine.
I have an old PAL VCR from the 1980s it use to work but from sitting in the closet for 3 years it stopped working, it wouldn't even turn on. So I took it to a repair man and he said its not worth fixing. please tell me why???!
anyone know what a H02 error code is? tape is stuck inside and no idea what gear I need to turn manually to release the tape - so frustrating with very little info out there.
Very good video, thanks. Only wish you had shown how you take off - and put back the front panel. That was not as easy as I thought, I'm sure you would know some good tricks how to do that easy and correct way.
either the 900 or 950 had digital video processing, which VHS needed. The picture off one of these was the best VHS pictures I'd ever seen off domestic equipment. I owned ( and still do ) a HS800 and 1000, and thought that was pretty good, but the 900/950 was even better
You mean the HS950 with "Digital Process". I do have this machine. Unfortunately the digital processing circuitry does contain early generation SMD capacitors, which are prone to fail. My HS950 unfortunately does have occasional disturbance in the playback video signal, and recordings sometimes just come out as strangely pixelated snow. I think this is due to bad capacitors. So the HS950 may have been a very good machine in its day, however it is not the most reliable.
interesting to read. that. I have an HS 800, owned for 20 years.It only needed a plastic part to repair a jammed loading mechanism., The HS 1000 has not faulted, but I have not played it for many years.
Should you decide to put the HS1000 back into service, make sure the oil on the shaft that the pinch roller assembly rides up and down on during the tape loading process has not gone bad and sticky. If the pinch roller assembly can't move freely, there is a risk of damage to the mechanism.
I bought the panasonic 900 back in 1995 for £400 new, best vcr I ever bought, still working today, don't use now I fire it up couple times to keep it rolling but keep it for old times sake as i don't want to ruin it, it was the first thing i bought from my first wage packet lol.loose that head cleaner though they do more harm than good especially when they go black and seize they mark the head drum it did it on mine, took mine out and just clean the head manually
Hi i wanted to ask you, do you know what light blue/greenish color grease is called? our supra sv91r vhs from 94 uses it and id like to use the same. im surprised that grease is still soft and working, but the bottom part on which parts slide has some wear marks so i assume i should add some more maybe the grease has somehow partially disappeared.
You could try spreading the old grease around to cover the bare surfaces again. I know what type of grease you mean, but I don't know what it's called. These days the best choice for most mechanisms is white lithium grease (but not directly from a spray can!). I would not recommend that strange random grease I used in this video anymore.
Hi DrCassette! I own a Panasonic NV-F70 and recently it won't rewind in Play mode. It does forward in Play mode, and it rewinds and forwards in Stop Mode. I've been watching many videos here on YT, and in most cases, the culprit seems to be the idler wheel. However, in this high-end Panasonic devices, I just can't see any idler wheel between the 2 main reels... so I just don't know if that idler wheel is underneath (not visible from top) or if these series do not use an idler wheel... and now I even wonder whether this particular issue of mine is related to that idler wheel. I've been watching your videos for the HS900, HS950 and HS1000 models, but in none of them you mention that "idler wheel" as a part which should be checked. So I'm really puzzled. I would really appreciate any comment or thoughts about this and/or what I should look at/check in order to try to service it. Keep the good work, and thank you.
Not all VHS mechanisms are the same. I know which idler wheel you mean. This can only be found in older mechanisms. Since it was a main failure point, producers eventually replaced it with gears. Your recorder should be new enough to use gears in place of idler wheels. Also the HS series recorders I have use gears. Not sure what could cause the problem you are experiencing.
I've had a Sony SLV770HF for 21 yrs now and it's the most advance VCR I have owned. When it was released it was ahead of its time. About 7yrs ago it started to experience a noticeable line across my TV screen only on play, if I slow mo/ fast advance it would disappear. I have always had intentions of repairing this. I came across your video and followed it to the T. Unfortunately now when I play the tape the entire picture is distorted and I get no audio as well. In your video you mention not going at the drum with anything but paper and alcohol. Also you mention ripping out the head with little or no force using a cotton swab. I would appreciate it if you could elaborate on that. You vid is very thorough and I would only hope you could remedy my dilemma. Thanks.
Take the faceplate off and put it on again but manually hold the door in the open position this time. There is a little catch sticking out from the chassis that needs to go between the faceplate and the door, so the door must be open during installation.
That was a fantastic service/cleaning video of this wonderfull machine dr. Cassette. I do have some questions to ask. First what type of alcohol you used? Isoprophilic? When it comes to clean the head with the paper method. How much pressure do I need to apply? And more important. Is there a special spot I need to reach to clean the head with the alcohol soaked paper? Thank you for sharing this and I'll be specting your anwers.
Isopropyl alcohol is what you need, or a didicated head cleaning product. The paper and the pressure applied has to cover the entire width of the upper head drum, that spins. I can't describe how much pressure you need. You should be able to feel the heads through a double layer of paper.
Okay. Thank you Dr.Cassette that was really helpful. I'll start working on my Samsung VHS. I know is a hi-fi one, It has a decent video quality and it´s dirty. Really big fan here, keep the videos coming. I´ll stay in tune on your channel
Hello, Dr. Cassette! I recentlly purchased a JVC HR-S9911U S-VHS VCR new old stock. It seems it needs lubing - I haven't opened it yet. Which greases/lubes would you recommend? Is it a service that someone with some knowledge could do? I already got Molykote EM-30L, a US brand Super Lube (Lithium), another two Super Lube precision oils with Syncolon (PTFE - with different viscosities) and a MOLYKOTE M77 Paste Grease (Silicone Oil with MoS2 for metal to metal). I went after the lubricants for my RTR machines. Could I use any of these? Thanks!
I don't know the VCR nor these products. But if it works for reel to reels it should work for VCRs. Replace oil with oil and grease with grease. And don't get anything into the tape path.
The JVC is a prossumer unit - with TBC and NR. My unit is not fast-forwarding: it starts but when it "changes gears" I can hear the gears screeching. There really is no grease apparent - the unit was probably manufactured in 2002 and sat on a warehouse until a month ago. The S9911U has a much cheaper built than this Panasonic and your grandmother's 9050. Thanks for your reply and for posting these videos!!!
Hallo DrCassette, vielen Dank für diesen Videoclip! Seit über zehn Jahren habe ich einen Panasonic NV-HS930 S-VHS-Recorder. Der tut noch prima bis auf die Bildaufzechnung, da gibt's Störungen. Ggf. werde ich den aufmachen und reinigen. Zählt dieser noch zur "besseren Generation"? Ein paar Dinge wurden eingespart - regelbarer Kopfhörerausgang und Aussteuerungsanzeige für den Hifi-Ton. Leider. Hatte mal vor ca. 30 Jahren einen Panasonic NV-EG830. War auch ein solides Gerät, damals allerdings noch ohne S-VHS. LG Magnetron
NEIN ! Stahlchassis, RotarySwitch konnte Ich nach 10 Jahren Stillstand mit Kontaktspray nicht zur Mitarbeit bewegen. SMD glötet, schwer auszubauen, aber es gibt eh schon lange keine Ersatzteile mehr. Wegen Software Abgleich keine PG-Shift Verstellung auf "Zeile" 577 möglich, dann nützt auch ein toller TBC nichts mehr. Da der 1e Bolzen auf den das Band trifft, unten schon Chrome frei und 1mm tief eigefrässt war, habe Ich ihn als einzigen Recorder nach nur 7k h Betrieb zum Recyclinghof gebracht. Heute, wo ein Bekannter von mir Ebay (Studiert) hat, würde Ich ihn selbstverständlich als ungeprüftes Fundgerät verkaufen. Wenn man links das lila T anklickt, erhält man Grundkenntnisse zum Thema PG-Shift und TBC.
Hey doc! I came across a chance to get 2 Panasonic AG4700. Pretty good shape, but they haven't been used in quite some time (they have been stored for over 3 yrs). Since they are in another state (over 500km) and they have no method for testing'em (of course, the VCR turns on), they offer to selling me both por 50usd + shipping. I know these models had issues, but you think it would be a good investment?
The Panasonic AG-4700 is the professional version of the Panasonic NV-HS1000 which is a very good VCR. I have one myself, and there is a maintenance video available on my channel. For 50$ these two should be a good deal.
I have a problem with Panasonic NV-SJ205. It plays the tape but the image looks terrible, as if its out of sync. Audio is fine. It also wount rewind, fast forward works.
Hello Dr Cassette I have this panasonic VCR and it loads a tape fine but will not eject the tape and has F03 error If I assist the motor it will eject but the mechanism seems tight at one spot
@@jefffan171 if I just lift and twist the VCR just slightly it starts to work again and it has stopped having the error atm so by persisting and using it probably cleaned whatever was dirty
I got an NV-HS800, but there's a plastic part broken in the mechanism unfortunately. I don't remember exactly which part it is, as it was a few years ago when I last looked into the unit. However, I might give it one more shot, as it would be nice to have that VCR up and running in order to use it for recording audio :)
That's what my father did in the late 80s. He wanted better quality than what he could get with cassettes, but couldn't afford a DAT recorder, so he got a HiFi VHS machine. We still have some audio only VHS cassettes.
Although I do have a studio quality Studer reel to reel tape deck, but good tape is expensive, and VHS cassettes are not. Also, in the future I might buy a PCM converter for quadrophonic recording and playback. I know that Mobile Fidelity Sound Lab did release a quadrophonic mix of Dark Side Of The Moon on VHS, where the front two channels were on the video track as PCM digital audio and the rear pair of channels was on the Hi-Fi audio track, which effectively is on the video track as well :)
When I worked in the trade and it is incredibly common for children to think of a VCR as a postbox. At least it wasn't a peanut butter and jam sandwich. Or worse still Lego bricks which break things. Common Kids lets play postman with your parents VCR. My engineers used to love the sweets. The worst was bananas.
In the loading motor shaft is attached a small plastic to transfer to movement to the outer plastic screw which touches the gears.This little plastic brakes and causing loading problems.
this is called the "Panasonic G-chassis", with the famous P6 lever (which you can break easily if you resync it not correctly.) but if the chassis ages, it may be subject to funny noises when running single-image forth/back.
Knuckles the Echidna On those mechanisms that leave the tape threaded up at all times the control track can be read at all times. And with that information the VCR can have a real time counter. On more advanced systems (MiniDV, Digital8, some Hi8) there is a time code recorded on the tape, every single frame has a number (h:m:s:f, for example 01:45:16:24). The VCR reads the time code and knows immediately where it is on the tape. On this S-VHS unit the counter is reset automatically when you eject the tape.
DrCassette ah now it makes sense :) Is the control track recorded onto the blank cassette by the VCR or is it already on the tape? Also during fast rewind with the tape off the heads how does the VCR know when to slow down so it doesn't snap?
Knuckles the Echidna The control track is recorded by the VCR. On this Panasonic, if there is no control track (blank spot on the tape), the counter stops counting and the seconds display turns into an animated circle that indicates the direction in that the tape is moving, as well as the speed (runs faster in FF). As I said, modern VCRs leave the tape threaded at all times, so the control track can be read in fast rewind, too. Also there are sensors on the takeup and supply reels delivering a readout of the speed to the microprocessor. That's how it can slow down in time. Before this technology was available, VCRs would rewind and fast forward in just one constant and rather slow speed. That's how my Panasonic NV-850 works. Takes forever to get somewhere.
DrCassette so I guess with the control track not there that is why on a blank spot the spinning head hunts around for the correct speed and perhaps also how it knows to speed the head up and slow it down when switching between 50 and 60Hz! I must have a look for the sensors on the reels. The VCR is such an interesting, mysterious and complicated beast :D My first VCR had breakfast cereal in it !
I am hoping you may be able to help me fix my K deck. I wish I had seen your excellent video before embarking on trying to fix it. It had a jammed cassette which would not unload. I managed to remove the cassette somehow which left the tape mechanism in the loaded position and the cassette holder in the unloaded position. I don't think I physically damaged anything in the process. I then chanced on your video and I lubricated the spindle that the pinch roller slides up and down and now the tape load / unload mechanism cycles smoothly - no more error F03.Now when everything is in the unloaded position and I go to insert a cassette, it immediately does the tape load routine without first loading the cassette so something is out of sync.Please can you help me rescue my VCR!
You will need a service manual. It contains all info on the timing of the transport. When you forced the stuck tape out, gears got misaligned. There are timing marks on certain gears that have to line up with timing marks on other gears. The service manual gives all the details.
Thanks so much for your reply - glad to know you are still monitoring this topic and there is someone out there that can help. Yes I managed to download a service manual which gives assembly and alignment details. I have tried going through all this but think I must have got a step wrong as it still doesn't work. The main sliding mechanism, main cam gear, sub cam gear and mode switch alignments were seemingly correct without needing to do anything but on getting to the step where you align the holder connection gear, the notch (recession A) in the main cam gear isn't visible as illustrated (Fig M37 in my copy of the manual) and you have to cycle the mechanism along to get to this point which moves the other bits away from their alignment position.I will have to go through again - any ideas as to what I may have missed? I am trying not to disassemble any more than I have to because it must be mainly to do with the relationship between cassette carriage and the rest of the mechanism that has got out of step. I can see why you say in your video you don't want to go there!
GREAT VIDEO can you please do one on the panasonic NV-3000 portable video recorder, i have one and i cannot quite fathom what is actualy wrong with it, i dont think its a grave fault.. thanks
Hallo Herr Doktor, da Sie ja aus Deutschland kommen, würde ich mich über deutsche Untertitel freuen. So gut ist mein englisch leider nicht. Zum reinigen sehr stark verschmutzter Videoköpfe nutze ich übrigens mti Isopropanol getränktes Fensterleder. Kopierpapier ist eher was für die Feinreinigung. Bin auch gerade dabei, meinen HS900 zu reparieren.
Nice find..I found a Panasonic RX-CS780 boom box in the garbage bin at the apartment building I live in..It's a great working old boombox but the cassette player doesn't work properly, it chews tapes..
I knew that, but I had never seen it for myself before. I liked the way VHS looked when I had a 26 inch 4:3 TV because it was small enough that the image didn't look bad, but since I got a 32 inch CRT VHS looked a lot blurrier, but Super VHS looks really good. Also, the SVHS tapes I ordered haven't gotten to me yet, so I've only seen SVHS ET for a comparison. Is there a big difference between ET with a high quality tape and an actual SVHS tape?
Super VHS will work on regular VHS cassettes if you drill a hole into the cassette case to trick the sensor in the VCR. I would imagine that a proper S-VHS tape gets better signal to noise ratio than a standard one.
I just got the SVHS tapes I ordered, so I recorded a comparison right away and there was another huge difference in quality. There was a lot less noise over the footage and not as many artifacts. I could beleive it was actually a tape, becuase there was barely any noise. And I already have an SVHS deck. Now I really wish that SVHS had caught on, because I have some shows from the 90s and early 2000s on VHS and I really wish they were SVHS now, since regular VHS's lower resolution is more noticable on the 32 inch TV I use now comared to a 26 inch one I used to use.
Thank you for your great and helpful videos. They have helped me more than once. This time with the tip "stuck pressure roller". Fortunately, no parts were broken off. Cleaned and made operable with sintered bearing oil. Now the good piece can serve as a "tape deck" with a long cassette running time and great sound. Best regards and keep up the good work! ruclips.net/video/3ljsn6sxOhM/видео.html
. #DrCassette #6months ago : _______________________________________ oh - from Germany you are ? Then I would be very happy, if you please would translate your video also into german language - because I found your pictures very interesting, but didn't understand only 10 % of your speakings - what a pity ! Please please , translate it - oh please - - - elessau2017-08-03
I don't know.... I have repairted almost 100 vcr-s and I always did it with a piece of clothing and I turned the vcr on so the head cleaned itself... Of course I used alcohol but I can't understand why you are so soft with thoose heads.... I got a vcr head from a friend a week ago and today I took it apart. The heads are so strong that I can't imagine them braking.... I have tried to brake them with force but I couldn't. (By the way the head was bad.... the internal ferrit ring was broken.)
It all seems so strong until it suddenly breaks... It's better to be safe than sorry. Also this method works on ANY head drum. Last sunday it fixed a Sony MiniDV camcorder that previously wouldn't record or play back anything. And for MiniDV, the heads are so tiny and fragile it's scary!
Thnak you for your reply ^^ Now I understand why you were so soft with it ^^ By the way.... Have you ever had a video 2000 vcr? My father has 3 of them and their heads are like hell on earth. they auto track by moving up and down O_O I hate thoose head. Hope you have seen anything like that and you know what I'm talking about :)
I actually had two Video2000 VCRs, but both didn't work. The auto tracking works using piezo elements, so you have up to 200V running into the head drum!
Oh my god.... I didn't knew that O_O if I had touched that while it was on... brrrr I don't want to think about that.... By the Way the video 2000 vcr-s are very fragile.... The 3 my father owns are in not working conditions tooo. Everithing is ok with them I checked every little thing but no they still don't want to work :/
Sony Trinitron Both the belt and the pinch roller are in good condition. Neither one of these parts are readily available these days, so just replacing them for no reason is totally not anything I'd do.
Hi, I have a loading problem with my machine (keeps rejecting tapes) which uses the exact same mechanism as your machine. I replaced the mode switch, reset the timing, lubricated, etc but the problem persists. Any tips on what else I can try to fix it? Here is the link to my clip showing the machine with the problem: ruclips.net/video/fDECZ6IQFUY/видео.html
Hey DrCassette, thanks for the heads up, I never thought about what kids might stick in VCRs! I made a quick video of my thrift store find here: ruclips.net/video/xMRzYVHX-M4/видео.html It was fun to crack open.
Wow, that bit of candy on the circuit board was quite disgusting, I wonder if this VCR was used in someone's home where a child had access to it and did that damage. Of course a VCR like this is probably overkill for domestic use, but you never know, someone may have had a home video recording studio of sorts. Still, not a good thing to find inside the recorder.
Mit dem Schraubenzieher sollte man nicht abrutschen. Autsch. Habe hier ein Notebook mit extrem feinen Leiterbahnen, ein Abrutschen wäre hier eine Katastrophe und ja, sowas passiert schonmal.
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IMPORTANT: When re-greasing the tracks of the loading mechanism, do not copy what I did in the video. Instead, clean off all existing grey grease with a dry cotton swab, then apply fresh white lithium grease. Do not use just any random grease!
Great video. I've had this player since new and a video got stuck just before I moved 12 years ago. After seeing this I managed to get it out and remove the mechanism. Definitely will sit down some point and remove all the old grease and replace it. In hopes the tape will feed around the drum again. At the moment it won't wind the tape around the heads. The parts move easily by hand but not mechanically. I'm hoping something is just dry as with the mechanism out I didn't see any broken teeth and there was no parts sitting at the bottom on the main board. But so lovely to see this player in the RUclips spotlight and getting some attention.
Babies and toddlers loved to insert items into VCRs back in the day. I've found money, toys, socks, food and all sorts of other colourful items in VCRs.
I found half a sandwich in a Ferguson FV31 vcr once. It had been there for some time. Not pleasant...
What a VCR.I really love to watch movies in VCR. Reward back my memories
It's a good thing that you made that work again. That's a really nice unit.
Thanks for this excellent video. Managed to remove the transport, using your guide, from an NV-HS950 which I purchased from eBay and did indeed need re-lubrication. The trick with paper to clean the heads safely worked like a charm!
I'm glad this video was helpful :)
Great video. I love seeing the insides of these machines and how they work. The candy was gross, but at least no one tried to make toast in it! The head cleaning reminds me of the head cleaning cassettes you could get that had the cloth type tape which you would soak in alcohol. I also had one that used these really really soft brushes.
Excellent quality of the video.
I managed to repair my vcr.
Thank you so much
Great job restoring it to working order. I have the same model, it's an excellent quality unit. I had assumed it used an LED display because of the orange colour. Now I come to find out that it's that way because of the tint on the plastic, interesting. I also have (I think) the same model of Sony Trinitron TV shown at the end.
thanks again. I finally got my panasonic hd-670 multi-system vcr working again after 15 years.
After 29 years, my Panasonic NV-SD3 VCR does not require any lubrication, greasing up of the gears, tracks or realignment. I only investigated whether the unit required a thorough service which it didn't. I didn't even have to blow out any dust, ( something I would never do) , as there was wasn't much of. If there was, I would use a new blusher brush and gently brush away the thin layer of dust towards the back of the unit. I use 91% isopropyl alcohol and two fine cotton wool rounds (not paper, as you can damage the heads and the drum) to clean the tape head and the drum, without touching those delicate components, hence the use of two fine cotton wool rounds. It still works an absolute treat ! 😊By the way, the plastic parts in the mechanism, have not gone a yellow colour yet and still off-white colour.
Paper will not cause any damage to heads or drum. Cotton wool will cause damage if it gets caught in the wrong places. Not touching delicate components means you have not cleaned the full tape path, so likely the cleaning has next to no effect.
beautifully crafted machine. the mechanism and everything else looks top notch. none of the cheap stuff
This looks like a very nice unit! And it seems easy to service too...
From my experiences, top-loader VCRs seem to be more reliable than front-loaders, but I'm sure they are a huge pain to repair when they break!
That's a truly nice VCR, well worth fixing
I think those sweets were probably also shorting something out, I don't know what the electrical resistance of Haribo (or whatever) is, but I'm sure it's no insulator! That's a good way to clean the head drum, I was the one who came up with that method, I remember a long time ago when I tried to clean the heads of an 8mm camcorder using cotton swabs, it ripped one of the heads right out!
CoolDudeClem used to be a common problem with cheap 'head cleaning cassettes' too, the really cheap nasty ones would have loops on the fibre, and would occasionally tear out the entire head :(
And resistance of Haribo and similar things: I see the need for a video
Reminds me of a Mitsubishi VCR I have I opened it up a few months ago and the loading belt had completely turned to goo luckily I had a spare parts VCR which was the same model and fixed up a bad solder joint and replaced a DEW sensor and its going good again
Wow, great video on cleaning a VCR! Now I don't have to junk mine hopefully.
Thank you very much! I am just got a tape stuck into a panasonic vhs and the only thing I did was apply a spray oil (wb40) in the (12:55 min) part and the tape eject and play perfectly!!! Thank you so much from Argentina! I was doing a analog to digital vhs converter for a client and got this panasonic, put the tape and doesn´t play and won´t eject.. really worry until found your video!! (sorry for my english!)
yes that's the pinch roller mechanism which is supposed to lift up before the tape is released from the head and wound back into the tape. If it's not lubricated it doesn't move or moves too slowly, throwing the unload sequence out and the tape gets tangled.
VFDs tend to attract dust because of the relative high voltages that they need to turn on segments. Newer ones don't need such higher voltages, but they're not that bright as a result. Also, nice built unit and you're so lucky to find it in that neat shape. All of the old VCRs that I've seen in this "era" are really damaged.
Nice machine. I never saw cleaning video heads like that. I will give it a try on one of mine. I have a Mitsubishi VHS and the big rubber gear belt just melt into a thing looking like a black chewing gum.
I just got a vcr player to watch old videos on and after first video a plastic piece beside the thing that ejects the cassette broke I don’t know if it has anything to do with this but the cassettes gets stuck and doesn’t eject properly and it’s visible especially on the right side. It doesn’t get pushed up same way as left side.. there was only one plastic piece but doesn’t seem to connect to the bigger plastic thing or I don’t know how to put it back, there was also a looped metal wire that came off after.. any clue on how to fix this? It’s a Panasonic NV-HD620
Sometimes the tape gets out but most of the times it doesnt
SUPER VIDEO !!!
I your video are getting better. Super job, Please keep making these video's,
Your one of the best, for use DIY's out there.
That thing is a beast, judging by the way it looks. Nice!!!
Have you seen the video about the Digital Betacam player I have on my channel? That is a real beast! :D
a video head vxp1561 suitable for Panasonic HS1000? Instead, the video heads vhp1747?
What's the component with the brass head next to the erase head is it just a guide post. It was causing problems for me, not sure if it's loose and you have to tighten it or just squirt some lithium spray in there. Also the part next to the pinch roller with the big white plastic head I had to turn a few times since it was making a squeeking noise when I run a tape through it.
Hello doc! Long time not bothering you. I had a question for you: in your experience how good or bad are the internal TBC's of these Panasonics?
I ask you because of the AG4700 I have. I made some captures and when the TBC is on, the sound ain't exactly right. Some parts speed's it up. It's ok MOST of the video, but aint perfect.
So, since I have anothers AG4700 (for parts) I took the working deck from the first one and put it into another AG4700. Now it has color issues. The colors just look weird and off. I mean trully off, green looks cyan and some colors doesn't even show. So... I took the baseplate and swaped the TBC module from the first deck to this one. Now colors are back. Seems that TBC module from the second one has some issues.
The question is: This TBC module (VEP03A53), has 8 variable resistors:
DIG. C LEVEL, W.B1, W.B2, R-Y LEVEL, 1HDL GAIN, TBC SYNC LEVEL, TBC OUT LEVEL, NOISE GATE.
Do you think that the color problem of the TBC that was on the second AG4700 could be solved by tweaking some of these resistors? Or I just bet on bad caps?
Also, the audio sync problem, could be solved this way? Have you ever tweaked a TBC? I know you will say "if it works, don't mess with it", but I really need this to work properly.
Oh and when the good TBC is off, the sound sync is way better!
I haven't looked at TBC modules in this great detail, so I really don't know much. On the module with the bad colour you could try tweaking the R-Y LEVEL as that has something to do with the colour signal. I too have some problems with the TBC in my HS1000. Most of the times, the video has more time base errors with the TBC turned on than with the TBC turned off, so the TBC in my VCR actually tends to make things worse.
I love the display on that thing. SVCRs are very neat technologies.
S-VHS indeed is great, amost doubles the resolution of standard VHS (420 lines vs. 240 lines). Even better is ED-Beta, the last edition of Sony's Betamax, at 500 lines. But that was only available in the NTSC parts of the world. JVC also created a digital edition of VHS called D-VHS. It records an MPEG2 Transport Stream with a quality better than DVD, and some models will even record HDTV!
DrCassette I know, I find that amazing! I mean a VHS having better quality than DVD, amazing.
Do syou have any information about 1991 Sony SLV-x65 VCR? (The one with "rental picture" feature")
whats good for applying the grease?
Brilliant guide to performing maintenance. Question, for this deck, how do you remove a jammed cassette? The tape is around the capstans, drum, pinch rollers, etc? I can't do the service on the RUclips clip until I can get the jammed tape out.
You can only do it manuelly by taking the top off and using your hand to clear the tape away from the guide posts etc...the tape should then eject.
Hi. I've had one of these from new. I recently found that mine was dead, nothing at all, so I opened it up and had a look at the PSU. I couldn't find any bad looking capacitors, but I noticed there was a fuse. I tested it and it was dead. I put a new fuse in and when I applied power, it blew immediately. Could you suggest what may have gone wrong in the PSU or perhaps give some idea of how I can troubleshoot it? Thanks!
who in there right mind would dump this? I bought my 900 in 1995 now 21 years old and still looks mint and working as new, cost me £450 new best money ever spent, used to use a lot as a music recorder back in the 90s.
do you service vcr's? i have a Sony SLV-N50, when playing a movie alot of times the picture is a little blurry, i adjust the tracking but it dont help much also when i rewind while its playing it will start to eat the tape after about 10 seconds
No, I don't do commissioned work.
Hi, I have a vasonic panasonic with the same mechanics, it presents the error F04 in the display, the tape aguarra in the input, to pull until the head goes normal, but when it comes back it gets stuck, in both situations have to force the mechanics to go, what can it be?
Doc, quick question. I got an AG-W1. I already rebuilded the PSU. Works and plays fine, but the picture shows noise ( it's black/white lines in the upper middle of the screen) in the same place. Could be the head or should I try something else?
Nice Video! 我在中国，我也从事录像机维修行业。这台HS900的录像机磁鼓型号是VXP1561，通用型号为VXP1746,VXP1677,VXP1747. 设备采用K-2机芯，容易损坏的部件是马达塑料轴(导致F03.F04错误代码) :-)
My Panasonic SD 350 is not playing, forward and backward. i have not used it since last 15 years and i think it is jammed with moisture. How can i get k deck mechanism out and clean it ?
recently bought one of these. runs okay when cold but mechanism starts to stick when attempting to load or unload a cassette. will go in and out of the machine but when wrapping tape around drum u can hear the motor spin but somthing slipping. get error f3 or f4. had the mechanism apart bur cant see any obvious faults with gears. any ideas?
Did you ever find a solution as mine is the same?
does the pinch roller pull off to clean and rough up?
I have NV-HS1000. Super machine! You can't beat old Panasonics. Even older Panasonic VHS models from the 80's, intended for home use, were very heavy duty.
Although I don't understand how does one get a candy inside of a high quality machine like the HS900. Must have been rich family with spoiled kids. My father would have given me something to think about if I'd done that to his VCR...
Since the candy was still inside the machine I guess the parents never found out about it. I too have an NV-HS1000, labeled as a Metz though. Awesome machine.
I have an old PAL VCR from the 1980s it use to work but from sitting in the closet for 3 years it stopped working, it wouldn't even turn on. So I took it to a repair man and he said its not worth fixing. please tell me why???!
great video
anyone know what a H02 error code is? tape is stuck inside and no idea what gear I need to turn manually to release the tape - so frustrating with very little info out there.
Very good video, thanks. Only wish you had shown how you take off - and put back the front panel. That was not as easy as I thought, I'm sure you would know some good tricks how to do that easy and correct way.
either the 900 or 950 had digital video processing, which VHS needed. The picture off one of these was the best VHS pictures I'd ever seen off domestic equipment. I owned ( and still do ) a HS800 and 1000, and thought that was pretty good, but the 900/950 was even better
You mean the HS950 with "Digital Process". I do have this machine. Unfortunately the digital processing circuitry does contain early generation SMD capacitors, which are prone to fail. My HS950 unfortunately does have occasional disturbance in the playback video signal, and recordings sometimes just come out as strangely pixelated snow. I think this is due to bad capacitors. So the HS950 may have been a very good machine in its day, however it is not the most reliable.
interesting to read. that. I have an HS 800, owned for 20 years.It only needed a plastic part to repair a jammed loading mechanism., The HS 1000 has not faulted, but I have not played it for many years.
Should you decide to put the HS1000 back into service, make sure the oil on the shaft that the pinch roller assembly rides up and down on during the tape loading process has not gone bad and sticky. If the pinch roller assembly can't move freely, there is a risk of damage to the mechanism.
Hello Dr. casstte,
What do you use to clean the crash on the LED display?
+Alan Wong
I use polishing fluid for cars. But I'm sure there are better products for that.
I bought the panasonic 900 back in 1995 for £400 new, best vcr I ever bought, still working today, don't use now I fire it up couple times to keep it rolling but keep it for old times sake as i don't want to ruin it, it was the first thing i bought from my first wage packet lol.loose that head cleaner though they do more harm than good especially when they go black and seize they mark the head drum it did it on mine, took mine out and just clean the head manually
Hi i wanted to ask you, do you know what light blue/greenish color grease is called? our supra sv91r vhs from 94 uses it and id like to use the same. im surprised that grease is still soft and working, but the bottom part on which parts slide has some wear marks so i assume i should add some more maybe the grease has somehow partially disappeared.
You could try spreading the old grease around to cover the bare surfaces again. I know what type of grease you mean, but I don't know what it's called. These days the best choice for most mechanisms is white lithium grease (but not directly from a spray can!). I would not recommend that strange random grease I used in this video anymore.
Hi DrCassette!
I own a Panasonic NV-F70 and recently it won't rewind in Play mode.
It does forward in Play mode, and it rewinds and forwards in Stop Mode.
I've been watching many videos here on YT, and in most cases, the culprit seems to be the idler wheel. However, in this high-end Panasonic devices, I just can't see any idler wheel between the 2 main reels... so I just don't know if that idler wheel is underneath (not visible from top) or if these series do not use an idler wheel... and now I even wonder whether this particular issue of mine is related to that idler wheel.
I've been watching your videos for the HS900, HS950 and HS1000 models, but in none of them you mention that "idler wheel" as a part which should be checked. So I'm really puzzled.
I would really appreciate any comment or thoughts about this and/or what I should look at/check in order to try to service it.
Keep the good work, and thank you.
Not all VHS mechanisms are the same. I know which idler wheel you mean. This can only be found in older mechanisms. Since it was a main failure point, producers eventually replaced it with gears. Your recorder should be new enough to use gears in place of idler wheels. Also the HS series recorders I have use gears. Not sure what could cause the problem you are experiencing.
I have a question. Is it possible to replace the NTSC Analog Tuner with a ATSC Digital Tuner?
No, these tuners are not universal modules that could be changed.
I've had a Sony SLV770HF for 21 yrs now and it's the most advance VCR I have owned. When it was released it was ahead of its time. About 7yrs ago it started to experience a noticeable line across my TV screen only on play, if I slow mo/ fast advance it would disappear. I have always had intentions of repairing this. I came across your video and followed it to the T. Unfortunately now when I play the tape the entire picture is distorted and I get no audio as well. In your video you mention not going at the drum with anything but paper and alcohol. Also you mention ripping out the head with little or no force using a cotton swab. I would appreciate it if you could elaborate on that. You vid is very thorough and I would only hope you could remedy my dilemma. Thanks.
+DrCassette Ok will do.
What kind of camera are you using to get that Great, Clear image?
+ronniesuperx This was recorded on my Canon HF-G30
+DrCassette Very Nice, Thank you.
I saw your Panasonic HS950 video on Dailymotion. How did you solve the "door not opening" after assembling? I just can't figure it out!
Take the faceplate off and put it on again but manually hold the door in the open position this time. There is a little catch sticking out from the chassis that needs to go between the faceplate and the door, so the door must be open during installation.
@@DrCassette Thank you so much! Your videos have been really helpful. You've earned my subsrciption :) Cheers!
You're welcome :)
I have this machine and it does not load the tape. Any cassette is ejected immediately after I put it in. What could be the cause?
cool !!! a candy vcr,hahahaha, alway's fun to look at your vid's bro,good job,keep posting , grz
Probably a kid that did that. Makes me remember some cartoon where a toddler shoved a PB&J sandwich into the tray of a VHS recorder.
That would have been even more of a mess :D
i ordered a panasonic NV HD635AM. What is the Super Drive system? Is the VCR any good...its expensive...i paid almost 100 pounds.
What is the cleaning fluid made of exactly?
I use 99% isopropyl alcohol to clean the heads.
That was a fantastic service/cleaning video of this wonderfull machine dr. Cassette. I do have some questions to ask. First what type of alcohol you used? Isoprophilic? When it comes to clean the head with the paper method. How much pressure do I need to apply? And more important. Is there a special spot I need to reach to clean the head with the alcohol soaked paper? Thank you for sharing this and I'll be specting your anwers.
Isopropyl alcohol is what you need, or a didicated head cleaning product. The paper and the pressure applied has to cover the entire width of the upper head drum, that spins. I can't describe how much pressure you need. You should be able to feel the heads through a double layer of paper.
Okay. Thank you Dr.Cassette that was really helpful. I'll start working on my Samsung VHS. I know is a hi-fi one, It has a decent video quality and it´s dirty. Really big fan here, keep the videos coming. I´ll stay in tune on your channel
Hello, Dr. Cassette! I recentlly purchased a JVC HR-S9911U S-VHS VCR new old stock. It seems it needs lubing - I haven't opened it yet. Which greases/lubes would you recommend? Is it a service that someone with some knowledge could do? I already got Molykote EM-30L, a US brand Super Lube (Lithium), another two Super Lube precision oils with Syncolon (PTFE - with different viscosities) and a MOLYKOTE M77 Paste Grease (Silicone Oil with MoS2 for metal to metal). I went after the lubricants for my RTR machines. Could I use any of these? Thanks!
I don't know the VCR nor these products. But if it works for reel to reels it should work for VCRs. Replace oil with oil and grease with grease. And don't get anything into the tape path.
The JVC is a prossumer unit - with TBC and NR. My unit is not fast-forwarding: it starts but when it "changes gears" I can hear the gears screeching. There really is no grease apparent - the unit was probably manufactured in 2002 and sat on a warehouse until a month ago. The S9911U has a much cheaper built than this Panasonic and your grandmother's 9050. Thanks for your reply and for posting these videos!!!
I need this k deck mechanism realignment do u have any videos?
good for saving this and hopefully someone will have a use for it.
Yes, my grandmother will have a use for this. I gave the unit to her.
Hallo DrCassette,
vielen Dank für diesen Videoclip! Seit über zehn Jahren habe ich einen Panasonic NV-HS930 S-VHS-Recorder. Der tut noch prima bis auf die Bildaufzechnung, da gibt's Störungen. Ggf. werde ich den aufmachen und reinigen. Zählt dieser noch zur "besseren Generation"? Ein paar Dinge wurden eingespart - regelbarer Kopfhörerausgang und Aussteuerungsanzeige für den Hifi-Ton. Leider. Hatte mal vor ca. 30 Jahren einen Panasonic NV-EG830. War auch ein solides Gerät, damals allerdings noch ohne S-VHS.
LG
Magnetron
NEIN ! Stahlchassis, RotarySwitch konnte Ich nach 10 Jahren Stillstand mit Kontaktspray nicht zur Mitarbeit bewegen. SMD glötet, schwer auszubauen, aber es gibt eh schon lange
keine Ersatzteile mehr. Wegen Software Abgleich keine PG-Shift Verstellung auf "Zeile" 577 möglich, dann nützt auch ein toller TBC nichts mehr. Da der 1e Bolzen auf den das Band trifft,
unten schon Chrome frei und 1mm tief eigefrässt war, habe Ich ihn als einzigen Recorder nach nur 7k h Betrieb zum Recyclinghof gebracht. Heute, wo ein Bekannter von mir Ebay (Studiert) hat, würde Ich ihn selbstverständlich als ungeprüftes Fundgerät verkaufen. Wenn man links das lila T anklickt, erhält man Grundkenntnisse zum Thema PG-Shift und TBC.
Hey doc! I came across a chance to get 2 Panasonic AG4700. Pretty good shape, but they haven't been used in quite some time (they have been stored for over 3 yrs).
Since they are in another state (over 500km) and they have no method for testing'em (of course, the VCR turns on), they offer to selling me both por 50usd + shipping.
I know these models had issues, but you think it would be a good investment?
The Panasonic AG-4700 is the professional version of the Panasonic NV-HS1000 which is a very good VCR. I have one myself, and there is a maintenance video available on my channel. For 50$ these two should be a good deal.
I have a problem with Panasonic NV-SJ205. It plays the tape but the image looks terrible, as if its out of sync. Audio is fine. It also wount rewind, fast forward works.
How do you remove the cleaning wheel mentioned at 10:50? I wish you would have showed it.
Thank you
It's clipped in place. Removal is easy. Just make sure you don't touch the head drum next to it!
Easier said than done LOL! I'll try
I did this several times. It is easy ;)
Hello Dr Cassette
I have this panasonic VCR and it loads a tape fine but will not eject the tape and has F03 error
If I assist the motor it will eject but the mechanism seems tight at one spot
Did you ever find a solution?
@@jefffan171 if I just lift and twist the VCR just slightly it starts to work again and it has stopped having the error atm so by persisting and using it probably cleaned whatever was dirty
I got an NV-HS800, but there's a plastic part broken in the mechanism unfortunately. I don't remember exactly which part it is, as it was a few years ago when I last looked into the unit. However, I might give it one more shot, as it would be nice to have that VCR up and running in order to use it for recording audio :)
That's what my father did in the late 80s. He wanted better quality than what he could get with cassettes, but couldn't afford a DAT recorder, so he got a HiFi VHS machine. We still have some audio only VHS cassettes.
Although I do have a studio quality Studer reel to reel tape deck, but good tape is expensive, and VHS cassettes are not. Also, in the future I might buy a PCM converter for quadrophonic recording and playback. I know that Mobile Fidelity Sound Lab did release a quadrophonic mix of Dark Side Of The Moon on VHS, where the front two channels were on the video track as PCM digital audio and the rear pair of channels was on the Hi-Fi audio track, which effectively is on the video track as well :)
***** Mine did the same. The part was replaced and it works perfectly now
When I worked in the trade and it is incredibly common for children to think of a VCR as a postbox. At least it wasn't a peanut butter and jam sandwich.
Or worse still Lego bricks which break things. Common Kids lets play postman with your parents VCR. My engineers used to love the sweets.
The worst was bananas.
It's a Sony CRT you have? :D
KVM-1420? :)
In the loading motor shaft is attached a small plastic to transfer to movement to the outer plastic screw which touches the gears.This little plastic brakes and causing loading problems.
How can I fix a Panasonic NV HS 900 has a F06 Error Code how can I fix it - any ideas please?
You should be able to find a service manual on your VCR online. The service manual will tell you what F06 means and how to repair it.
It was always written everywhere to rotate the head only CCW when cleaning it.
Yes, turning the head drum in both directions was not the right way of doing it.
this is called the "Panasonic G-chassis", with the famous P6 lever (which you can break easily if you resync it not correctly.)
but if the chassis ages, it may be subject to funny noises when running single-image forth/back.
rarbiart This is actually the "K" mechanism and not the G type. I know because I have the exact same one along with the service manual.
pounder46 thank you for the correction.. it's now about 20 years that i had the last VHS chassis on my bench... (i suddenly feel rather old now)
Yeah. This is the K mechanism. My NV-FS200 uses the G2 mechanism. Very complicated!
How do some VCRs know where they are on the tape and then show the position of the tape so accurately even if it is ejected?
Knuckles the Echidna On those mechanisms that leave the tape threaded up at all times the control track can be read at all times. And with that information the VCR can have a real time counter. On more advanced systems (MiniDV, Digital8, some Hi8) there is a time code recorded on the tape, every single frame has a number (h:m:s:f, for example 01:45:16:24). The VCR reads the time code and knows immediately where it is on the tape. On this S-VHS unit the counter is reset automatically when you eject the tape.
DrCassette ah now it makes sense :) Is the control track recorded onto the blank cassette by the VCR or is it already on the tape? Also during fast rewind with the tape off the heads how does the VCR know when to slow down so it doesn't snap?
Knuckles the Echidna
The control track is recorded by the VCR. On this Panasonic, if there is no control track (blank spot on the tape), the counter stops counting and the seconds display turns into an animated circle that indicates the direction in that the tape is moving, as well as the speed (runs faster in FF).
As I said, modern VCRs leave the tape threaded at all times, so the control track can be read in fast rewind, too. Also there are sensors on the takeup and supply reels delivering a readout of the speed to the microprocessor. That's how it can slow down in time. Before this technology was available, VCRs would rewind and fast forward in just one constant and rather slow speed. That's how my Panasonic NV-850 works. Takes forever to get somewhere.
DrCassette so I guess with the control track not there that is why on a blank spot the spinning head hunts around for the correct speed and perhaps also how it knows to speed the head up and slow it down when switching between 50 and 60Hz! I must have a look for the sensors on the reels. The VCR is such an interesting, mysterious and complicated beast :D My first VCR had breakfast cereal in it !
The head drum always spins at a constant speed. The linear speed of the tape is adjustable with the tracking control.
I am hoping you may be able to help me fix my K deck. I wish I had seen your excellent video before embarking on trying to fix it. It had a jammed cassette which would not unload. I managed to remove the cassette somehow which left the tape mechanism in the loaded position and the cassette holder in the unloaded position. I don't think I physically damaged anything in the process. I then chanced on your video and I lubricated the spindle that the pinch roller slides up and down and now the tape load / unload mechanism cycles smoothly - no more error F03.Now when everything is in the unloaded position and I go to insert a cassette, it immediately does the tape load routine without first loading the cassette so something is out of sync.Please can you help me rescue my VCR!
You will need a service manual. It contains all info on the timing of the transport. When you forced the stuck tape out, gears got misaligned. There are timing marks on certain gears that have to line up with timing marks on other gears. The service manual gives all the details.
Thanks so much for your reply - glad to know you are still monitoring this topic and there is someone out there that can help. Yes I managed to download a service manual which gives assembly and alignment details. I have tried going through all this but think I must have got a step wrong as it still doesn't work. The main sliding mechanism, main cam gear, sub cam gear and mode switch alignments were seemingly correct without needing to do anything but on getting to the step where you align the holder connection gear, the notch (recession A) in the main cam gear isn't visible as illustrated (Fig M37 in my copy of the manual) and you have to cycle the mechanism along to get to this point which moves the other bits away from their alignment position.I will have to go through again - any ideas as to what I may have missed? I am trying not to disassemble any more than I have to because it must be mainly to do with the relationship between cassette carriage and the rest of the mechanism that has got out of step. I can see why you say in your video you don't want to go there!
GREAT VIDEO can you please do one on the panasonic NV-3000 portable video recorder, i have one and i cannot quite fathom what is actualy wrong with it, i dont think its a grave fault.. thanks
I don't have a Panasonic NV-3000.
@@DrCassette ok but thanks for the reply
Hallo Herr Doktor, da Sie ja aus Deutschland kommen, würde ich mich über deutsche Untertitel freuen. So gut ist mein englisch leider nicht. Zum reinigen sehr stark verschmutzter Videoköpfe nutze ich übrigens mti Isopropanol getränktes Fensterleder. Kopierpapier ist eher was für die Feinreinigung. Bin auch gerade dabei, meinen HS900 zu reparieren.
Can I use Lithium grease?
Yes, I too use white lithium grease for mechanisms now.
Nice find..I found a Panasonic RX-CS780 boom box in the garbage bin at the apartment building I live in..It's a great working old boombox but the cassette player doesn't work properly, it chews tapes..
You may want to check the belts, idler wheels and the pinch roller.
DrCassette Thanks..I've been meaning to take it apart and check it out but haven't found the time
What a vile thing to find. But I think I have you beaten for vileness, I found a DEAD MOUSE in an old toploader once !
I just got a super vhs player and the difference between vhs and svhs is huge.
pooperscoop54321
Of course it is: VHS has a resolution of 240 lines, and S-VHS has a resolution of over 400 lines!
I knew that, but I had never seen it for myself before. I liked the way VHS looked when I had a 26 inch 4:3 TV because it was small enough that the image didn't look bad, but since I got a 32 inch CRT VHS looked a lot blurrier, but Super VHS looks really good. Also, the SVHS tapes I ordered haven't gotten to me yet, so I've only seen SVHS ET for a comparison. Is there a big difference between ET with a high quality tape and an actual SVHS tape?
Super VHS will work on regular VHS cassettes if you drill a hole into the cassette case to trick the sensor in the VCR. I would imagine that a proper S-VHS tape gets better signal to noise ratio than a standard one.
I just got the SVHS tapes I ordered, so I recorded a comparison right away and there was another huge difference in quality. There was a lot less noise over the footage and not as many artifacts. I could beleive it was actually a tape, becuase there was barely any noise. And I already have an SVHS deck. Now I really wish that SVHS had caught on, because I have some shows from the 90s and early 2000s on VHS and I really wish they were SVHS now, since regular VHS's lower resolution is more noticable on the 32 inch TV I use now comared to a 26 inch one I used to use.
Free candy, nice.
Als Öl zum Schmieren: Geht hier Nähmaschinenöl?
+Magnetron692
Ja, das nehme ich auch. Aber: Fett darf nicht mit Öl ersetzt werden.
+DrCassette Danke! :)
Rotten candy, no wonder it did not want to play.
I guess the one in the left is a coke jelly and the red one might be a sour jelly.
Thank you for your great and helpful videos. They have helped me more than once. This time with the tip "stuck pressure roller".
Fortunately, no parts were broken off. Cleaned and made operable with sintered bearing oil. Now the good piece can serve as a "tape deck" with a long cassette running time and great sound. Best regards and keep up the good work!
ruclips.net/video/3ljsn6sxOhM/видео.html
You are welcome :)
Are you Canadian?
No, I am from Germany.
DrCassette Oh wow, you sound very Canadian to me, mainly the way your o's sound. But maybe I'm wrong about that.
. #DrCassette #6months ago :
_______________________________________
oh - from Germany you are ? Then I would be very happy, if you please would translate your video also into german language - because I found your pictures very interesting, but didn't understand only 10 % of your speakings - what a pity !
Please please , translate it - oh please - - -
elessau2017-08-03
I don't know.... I have repairted almost 100 vcr-s and I always did it with a piece of clothing and I turned the vcr on so the head cleaned itself...
Of course I used alcohol but I can't understand why you are so soft with thoose heads.... I got a vcr head from a friend a week ago and today I took it apart. The heads are so strong that I can't imagine them braking....
I have tried to brake them with force but I couldn't.
(By the way the head was bad.... the internal ferrit ring was broken.)
It all seems so strong until it suddenly breaks... It's better to be safe than sorry. Also this method works on ANY head drum. Last sunday it fixed a Sony MiniDV camcorder that previously wouldn't record or play back anything. And for MiniDV, the heads are so tiny and fragile it's scary!
Thnak you for your reply ^^ Now I understand why you were so soft with it ^^
By the way....
Have you ever had a video 2000 vcr?
My father has 3 of them and their heads are like hell on earth. they auto track by moving up and down O_O I hate thoose head. Hope you have seen anything like that and you know what I'm talking about :)
I actually had two Video2000 VCRs, but both didn't work. The auto tracking works using piezo elements, so you have up to 200V running into the head drum!
Oh my god.... I didn't knew that O_O if I had touched that while it was on... brrrr I don't want to think about that.... By the Way the video 2000 vcr-s are very fragile.... The 3 my father owns are in not working conditions tooo. Everithing is ok with them I checked every little thing but no they still don't want to work :/
Replace the belts and pinch roller as a precaution.
Sony Trinitron Both the belt and the pinch roller are in good condition. Neither one of these parts are readily available these days, so just replacing them for no reason is totally not anything I'd do.
Sony Trinitron The belt is actually a toothed timing belt which lasts many more years that the rubber belts.
Hi, I have a loading problem with my machine (keeps rejecting tapes) which uses the exact same mechanism as your machine. I replaced the mode switch, reset the timing, lubricated, etc but the problem persists. Any tips on what else I can try to fix it? Here is the link to my clip showing the machine with the problem: ruclips.net/video/fDECZ6IQFUY/видео.html
K mechanism. A revision of the over complicated, one motor only G mechanism.
Mjam Mjam! Lecker! #göbel :D
Ich werde nie wieder Haribo-Schnuller essen können ohne an diesen Videorecorder denken zu müssen :D
Haha. Glaube ich sofort. *bwäh*
Hey DrCassette, thanks for the heads up, I never thought about what kids might stick in VCRs! I made a quick video of my thrift store find here: ruclips.net/video/xMRzYVHX-M4/видео.html It was fun to crack open.
But this is art for art,there is no new tapes for them anymore,old ones hawe 10 years diamagnetic life.
I need this to play existing recordings. Either way, 10 years lifetime is bullshit.
Wow, that bit of candy on the circuit board was quite disgusting, I wonder if this VCR was used in someone's home where a child had access to it and did that damage. Of course a VCR like this is probably overkill for domestic use, but you never know, someone may have had a home video recording studio of sorts. Still, not a good thing to find inside the recorder.
Mit dem Schraubenzieher sollte man nicht abrutschen. Autsch.
Habe hier ein Notebook mit extrem feinen Leiterbahnen, ein Abrutschen wäre hier eine Katastrophe und ja, sowas passiert schonmal.
Damaged by HARIBO. 🤣
Only in Deutschland
If that's the most disgusting thing youve ever found in a VCR you haven't worked on very many.