Panasonic G Mechanism VCR were a real piece of Garbage
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- Опубликовано: 2 окт 2024
- This was the worst VCR design Panasonic made. It ended up on all their so called "High end" Abysmal Garbage SVHS machines.
They were advertised as the indestructible aluminum die cast chassis. OK perhaps the chassis was OK, but all those plastic drive gears and grease that turned to glue was a recipe for disaster.
This one turns off when stop or reverse search is selected. 
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I've worked on PAL K mechanism machines and there are a lot of differences. The NV-HS1000/AG4700 has a long plastic sled going across the bottom of the deck, and on one of my machines that part snapped and I had to replace it and re-time much of the mechanism. They also have a loading motor, which yours doesn't, but the motor coupling frequently snaps. Have you seen that kind of K-mechanism?
The drive belongs to the G family (lifting magnet, rotary switch at the top and soldered), but it is missing the large brass roller on the left like I know it from the Panasonic NV-FS 88/90/100.
@@TTVEaGMXde Yes, K is a single-slider 3-motor design.
@@TTVEaGMXde The NV-FS series use the GII mechanism. The main difference is the extra motor for reverse playback and search modes.
Phoenix Union High School District had a hundred of these POS, I worked on them when new. Gawd I can just imagine how terrible they are now.
I recently got ahold of an Emerson 9” VCR combo for playing retro video games. Unfortunately the VCR won’t accept tapes which lead me to your videos! Really awesome & informative stuff. Thank you!
I had a fair amount of capstan motor problems on these decks over the years. The capstan motors had to work pretty hard handling the rewind and fast forward of the tapes. Usually the tell-tale sign was the motor screeching during FF and REW.
They were garbage.
I think I had that VCR back in the day. The power supply was weak, so it took 20 minutes of it cycling the power before it became stable. Seems like Panasonic has a lot of weak power supplies for a while. I didn’t know Panasonic made it for RCA, but that explains a lot.
I came home from Goodwill with a PV-4065S. It goes nuts, transport does all kinds of crazy things. Thanks for the video, maybe it will help me get it going. I have it running now. I found a cold solder joint on the mode switch at the side of the elevator and 5 bad capacitors in the power supply. Your video was a great help. Thank you.
Oooh how we hated these G chassis machines. Can anyone say "Rube Goldberg". Automatically gave the customer a higher estimate knowing it was one of these. The AG1980 was an expensive machine.
Hi there Dave.... I used to service these units, it needs to be in stop mode to align it. So cassette down and A/C head lever fully across. Then all the alignment dots need to be lined up. Best of luck..... 😀
Hello sir, I have Panasonic nv-G2 vhsc camcorder. It plays tape fine but when I try to record it starts but fades out it looks like fading button is stuck but not. I check the button. It is ok. But the voltage between legs of the button is not steady. I don't know where to check next. I just got the services manual. Do you have any ideas?
I agree it is overly complex, but to me it is a mechanical marvel; watching it moving is mesmerizing. I had to fix a TOTL Panasonic with the KII mechanism (I remember it had an extra toothed belt to speed up operations or to allow jog shuttle operations) with two broken gears (teeth snapped off). Once lubed and re-timed the tape transport was working perfectly. I honestly hated a lot more the membrane keyboard which was causing false contacts and locking the machine up (remote included).
Membrane keys blow, and by that I mean they suck.
The infamous Pansoinic K mechanism was not one of their best designs.
The early Panasonic decks were excellent, then they started cost cutting
and the rest is history.
I found that the Sony decks gave a better performance until the capacitors
dried out, at least they made repair kits for them.
I recapped a handful of sony PSUs. At least the caps are dirt cheap and easy to fix.
They were the shits but moneymaker.
@@PlutoniusX The Sony decks had a simpler design and apart from wear and tear items
gave little trouble.
The Panasonic G decks were good, but as Dave has show us the K decks were far to complicated.
@@Barbarapape Absolutely. I have a stock of blue gears and capstan bearings so I am set on Sony VCRs. That is about the only thing that goes wrong other than the half arms need some lube and TLC.
@@12voltvids True, they kept us employed, but i still shudder when i see one.
There were several variants of the G mech over the years. Most of them use an orange-colored toothed belt as apposed to the rubber belt this one has, as well as an exta half-load arm that brings the tape over the A/C head for counter readout during FF/REW. AG-1970 uses the GII mech, AG-1980 uses the K mech.
Engineers always try to achieve the lowest parts count possible and get the same results.
maybe if you put this on small town some people will be happy sir
What?
Betamax what a dream
This is what a part of the K-Drive commonly used in Europe looks like with a servo motor instead of a lifting magnet and a rotary switch with plug contacts on the underside
ruclips.net/video/7wDWE8uZcnA/видео.html
02:02 - I keep seeing temperatures in the greater Vancouver area that I could barely call anything comfortably warm, in Windy. What gives?
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Why are Panasonic NV vcrs more reliable I have a multisystem NV vcr and one SVHS NV model with no issues at all.
No one know VCR would still be in service
Vcrs are still in use for archiving old recordings. There are people that seek out old releases that never made it to dvd or streaming. Tons of content, mostly low budget that was cheap to produce and distribute on tape that never was released and for those film and vintage TV buffs that is who is using vcrs. The fella that owns this sent me 5 this time. All now running again. He said he has about 3000 tapes that he is now digitizing to hard drives never to be seen again. I stopped recording on tape about 24 years ago when dvd recording became available and moved to HD as soon as I could. For me tape archiving is a business so I keep my machines running for the soke purpose of getting home videos off tape to s more permamant solution. I do collect old vcrs just like I collect old tube radios but not to use, bit more to preserve a few. Future generations will have no idea what this was. Myaelf I am old school. I like physical media. I don't stream on my phone, for that matter I don't even have a data plan on my phone. I don't subscribe to any. I have my tunes on memory sticks.
Maybe I’m missing it- but I’ve been trying to find your contact information…
I have a Sony cd/fm/cassette player that has sentimental value to me that needs repair.
(Someone forced the cr door open and now nothing will play).
I’m not even sure you are receptive to work orders from your videos but I was hoping.
I remember my grandmother had a VCR like this. Hit the eject button, wait ages while it clicked, clunked and banged away, get the tape back. 🤪
Long story short, it went dead and got to be the VCR I learned from by taking it apart. Even back then it cost more to diagnose and have it fixed than it was to replace.
Was never able to actually fix it since by the time I found the bad transistor in one of the power circuits (after disassembling EVERYTHING), that loading mechanism drive gear hanging off the side was missing a couple of the smaller teeth. It was white plastic and not die cast like the one in the video. Stupid, stupid design. They knew it, too since everything I've seen from Panasonic after that VCR had a separate loading motor again.
Shame, too since it was a HiFi model with VU meters and manual record level... Also had a bar code scanner with a booklet of codes to program it. It was wacky.
I had my doubts about the first fix. And it looks like I guessed right this time.
The "K" mechanism put's the "K" in Kwality :)
I am fascinated by garbage, all that clockwork to make use of 1 motor and 1 motor only.
I prefer the Sony VHS offerings. Other then the blue gear and a few issues that are easily correctable, they seem to be a better unit.
Yes Sony far more reliable other then the blue gear and some crazy caps.
Hey, at least it doesn’t have a 100% failure rate like some Sonys with that white take up gear cracking on their Hi8 machines or the supply side sled blue gear cracking on most of their VHS machines.
This one was f’d up by the previous repair tech who didn’t know what they were doing.
Like a cassette deck with 1 motor sanyo rds20
One more save from landfill a lot of moving parts in that
Makes the Funai mechs look nice by comparison...
LOL true
Better lube the hell out of it! But it still works! That is impressive!
Key the old KY in there
One wonders if the engineers who designed this were just having fun at the expense of everyone else, or if all those gears and levers really cost less than another motor and its control electronics.
Normally the lifting magnet would have to be more expensive than a standard "Mabuchi" motor. Or the lifting magnet was off the shelf and cheap, which would explain why it burns out more often. My Opinion😉
Was disgrunteled. Went to Elna with the new secret panasonic capacitor formula. Well the rest is history...LOL
Pretty sure that isn’t a K mechanism. Their mode switches are in a completely different place
I always thought this was a G, but it says "K" on it embossed into the chassis.
@@12voltvids Panasonic's manual for this mech calls it the G chassis. The "K" stamped on the chassis must mean something different.
Why did they do the time of day ,with your power?
he took the option on his own so he can try to save money
Awesome!
There was a modification in a service bulletin on this model. After replacing the mode switch you were to add capacitors to the PCB to reduce switch bounce. The bounce was confusing the processor causing to leave the solenoid on which burned it up. Back in the day you could buy a rebuild kit with the solenoid, switch and capacitors. I spent 23 years repairing consumer electronics.
It wasn't so much switch bounce it was dirt in the switch, usually tar and nicotine from people smoking. We used to change the switch and add the caps when under warranty but out if warranty just remove and clean the switch and they didn't come back. Used to replace the thermal fuse on solenoid. Out of warranty nobody, not one single customer would pay for parts and labour, they would trash the machine. The guy I worked for gave free estimates therefore id someone didn't fix it it was straight out of my pocket because I was not paid for refused estimated. One of the many reasons I told him to fu*k himself.