Trying to FIX a 1997 Sony Walkman WM-FX463 (5th video in Walkman series)
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- Опубликовано: 16 окт 2024
- Hi, this is the 5th video in the Sony Walkman series. In this one I try and repair a faulty Walkman WM-FX463 which is not outputting any sound and does not play tapes.
Remember that this is just for entertainment and I am not an expert in these repairs. The processes in the video may not be the best way, the correct way or the safest way to fix these things.
I do love fault finding and trying to fix broken things so I hope that comes across in this 'Trying to FIX' series.
Many thanks, Vince.
Nicely made by Sony. On the circuit board, there is a schematic of how the belt must be putting on the pulleys.
Pumping out the videos again!! Thought you forgot about them! Can't wait to watch!
Cheers Jim :-)
@@Mymatevince Just finished watching! Can't win them all, but that's half the fun is just trying! Keep up the good work bud!
Thanks mate. Yeah, you never know, it might get fixed one day :-)
@@Mymatevince I certainly hope so! The more we learn, the better we become!
For future reference, if you look near the chip you were talking about, there's an area that says PREOUT (twice) - and there's some test points near that - you can use those, and create a cable to plug into another amp (or your speaker) and see if audio is at least getting that far, then there may also be a test point AFTER the amp, but before the jack....
Hi there. I wanna thank you even more, today the belt arrived, and now I am listening to an old cassette. Thank you - love you for this, bringing back my youth and the music from that time. Could never have done this on my own, since I am clerk and not technically minded.
Great content again ... not a failure but an ongoing project! Keep up the good work mate 👍👍
Thanks Dave :-)
@@Mymatevince you're welcome mate ... I've said it before I find these and other sites like tronix fix fascinating!
I like the fact that you are honest and say that you don't know right now!
Keep it up fella 👍
Just wanted to say thanks and how much I appreciate your videos. Thanks mate!
Had the most joyful afternoon, alone in our House, just singing, Abba, Queen, all on my own...Thank you so much..
At 23:50 you can see a diagram on the circuit board showing you how the drive belt is fed around the wheels. Could be a useful future reference for similar projects that might also have instructions for things like this written on the board itself.
Oh yeah, well spotted, I never noticed that :-)
There's an obvious crack in there! Tip: get yourself an audio wire and use your speaker to reverse the signal from the jack next time you have a similar problem
Just had a quick look at the service manual, IC301 Audio Amp: Pin 7 Vcc, should be at 2.9V, Pin 5 Gnd. Pins 4 & 8 audio outputs, they should connect to o/p jack. This is where an oscilloscope comes in handy for tracing the audio through. Cap C317 is across supply supply rail so you should have nearly batt. voltage (I think it goes through a diode, so that will drop a little).
Thanks Ian :-)
It is unlikely that one of the ICs has been damaged. My suggestion is to look for corroded or broken paths. I repaired a walkman with that problem.
I think this board has some broken paths.
When a capacitor is short, on both sides you must have 0 ohms, if it is different from 0, what you have is a resistor in parallel to the capacitor.
Well...….you are completely right :-) I just did a revisit video on this. I won't give away the outcome but broken paths is spot on :-)
It boggles my mind why on earth people down vote Vince's videos. They are better than TV
Wow, thank you :-)
love all your videos
Thats another decent video... Appreciate it from Asia, Bangladesh....👍
@@happyatheists9361 what do u mean, mate??
Hi I watched the second part to this last night, I have a very similar model has exactly the same functions as this model, however, the tape plays slow as it nears the end of Side A and the radio has no sound, I'd love to fix it but wouldn't know where to start lol. Great video, thanks for your in detail method. ATB, Mark
Thank you very much for your video, it was a joy to watch, where did you bought the belt for the walkman? I think mine is worn out since my also is from 1997 or so. The radio is working fine.
Great attempt =D That small ceramic cap measuring as a short - it was probably across a coil or inductor (normal). These sometimes have independant fuses on there for the different sections. I thought I saw an 'F1' marking on there earlier - check none of those are open circuit.
The larger cap on there looks to be a super cap - those often leak (sometimes hard to tell), are you sure that didn't cause any damage around that part of the PCB. All you need is one missing ground connection (maybe around the battery terminal area) and you could lack sound. Sometimes they use ferrite beads and those can blow like a fuse too (and those can go open circuit as well).
This is the sort of thing that would be easier to fix with a scope - just scope the inputs and outputs around the audio circuitry to work out where the audio is missing.
Thanks again Chris, can I ask a question on the scope. If I was to put a single probe onto the tip of the 3.5mm headphone jack would it show up as a wave if it was working and then if it shows nothing do you work your way back until you find the wave or is it much more complicated than that. Or is it something like...sometimes it will show a sine wave if it is working and a different wave if it is not etc. I hope that makes sense as if I had to know all the different waves or the strength of them then I would be completely lost. Sorry for the newb type question. I will open this up again and have a look for some fuses, I completely forgot to check that :-)
Yes, that's pretty much it! You could for example have probed those input pins on that IC and see if it looks like sound (you can tell if it is by stopping and starting the tape and watching the wave form). You can also compare to a working system to see what the audio looks like before you start. The only settings you would need to adjust on the scope is switch the coupling from DC to AC, and adjust the voltage and timebase settings to get the signal to fit on the screen how you want it.
Please please please do a beginners guide on using a scope Chris!!!!!! So I understand what you said apart from changing the coupling from DC to AC. How would you know to change that or do you always change to AC when scoping audio??????
I know this is an old video but want to make a suggestion. It is easier to break circuits down into blocks of one function. For an example when you asked what made the sound. Imagine it like this. Sound is decoded from the tape and sent as a signal to some chip that has to process it into audio. After it is processed it is fed into an amplifier. Somewhere there the volume switch will come into play. Then out the audio jack. Makes it easier to narrow down where the fault in when it isn't on one side like the power chips. When you look at chips they tend to always look similar to what they do. For an example you'll usually see a computer processor near a bunch of capacitors to reduce sound. You'll see amplifiers near larger power traces and heat sinks among other larger components. When you start noticing these patterns like that you can get an idea what part of the board does what even if you don't grasp the full picture. Hope this helps and I would seriously suggest purchasing yourself some kind of oscilloscope. In your case maybe a very cheap single channel one. You don't need it more than just to see if signals are there or not. Sure a multimeter is nice but it wont easily show audio or signals coming from a jack but an oscilloscope can see noise like that easily. One other device that maybe helpful is a logic probe. Very cheap device allows you to tell where a signal has a high or low or if it is fluctuating between those values. Very good and simple way to see if any kind of signal is happening on that probe spot. Tools like this can show you what is happening for example on that pre amp chip.
If you have an old computer speaker (or maybe the amplified speaker you already use would suffice) you really should build yourself a simple 'signal tracer' Vince. I made one and use it regularly. It's very helpful in tracing where your signal is breaking down. That and a very cheap & cheerful power supply would help you no end with these repairs.
That is great advice, another viewer mentioned that as well. Am I right in thinking if I made up one and connected it using the ground from the Walkman board and then used it to probe the output of the Audio pre amp chip with the other wire from the speaker that I should get some level of audio on the output pin. So do you think it is that square chips that converts the tape head input to audio that we can understand or does it get converted before the square chip. Hope that makes some sense :-)
Sorry, just realised these tapes are analogue aren't they so I suppose no converting it done just amplifying??????
@@Mymatevince Cheers Vince. Yes that is about right. I do think the pre-amp/power amp chip should be examined. With a home-made signal tracer (a very basic circuit with probe & ground cables coming off one side and a 3.5mm jack coming off the other side of the circuit plugged into your amplified speaker) I would be connecting the ground clip to the cassette player ground and touching the probe to pins 22,25 34 & 35 in turn of the LA4585M. You should then be able to hear the signal on your amplified speaker. The LM4585 acts as both the pre amplifier and power amplifier, so the pins I mention should carry a signal. If they do, then the chip is good and you could continue probing the components following those pins to see where the signal disappears. I would also want to probe pins 23 & 24 (which I think is where the radio signal enters the chip) If there is signal on 23/24 but no signal from the other pins mentioned, I would start to suspect a bad chip. Sorry for the long reply, but it's a bit difficult to explain in text. I could build you a simple signal tracer (gratis) if you want but it could take a week or two as I'm quite busy at the moment.
@@Mymatevince Correct!
By the way, before going any further it may be worth confirming that the output socket internals are good. You could do this quite easily by hooking a couple of crocodile clips on the ground and tip jack plug that goes to your amplifier and touching the other side of the alligator cables on the solder joints of the output socket (the outer two are ground and the inner two left & right output). If you get an output from the solder points, the socket is damaged.
Cam you get a direct feed from the sound chip it self? As someone point out if that crack is a problem you can check from the sound chip directly to see if there is any sound
I hope that makes sense?? Lol
Yes that makes complete sense. Thanks :-)
Hi.i watch your great repair video.very good.tanks.
I have a TC150 sony Walkman and i think a preamplifier ic of it is faulty.its voice is noisy.
do you have an IC with this name?
CXA 2500
we dont have this chip in our country.
Can you would help me?what do I do?
These type of old boards use to get faults on vias as well, they use to broke internally making no contact to both sides of the board
39:32 you were probably reading remaining voltage in other capacitors that's why you got a beep, when i find something alike, i turn it on and i see if i have voltage on that capacitor, if not, i can clearly say that it's shorted. you can also short it with tweezers and read it again
Great advice, thank you for sharing it :-)
@@Mymatevince you can also randomly choose capacitors to read voltage and see if some power rails are missing and if so you can investigate why. Great videos keep it up you are one of my fav chanels on youtube i must say :)
Facing same issue but on WM12 the first one you repaired is there continuity among all the 4 side solders along audio jack ?
Because I am not getting with 1 contact and tracing back that contact I get continuity
Is it possible that the potentiometer/volume control switch has failed? Or would you still get static if it was that?
I am not sure, it did give a varying Ohm reading when turned so I think perhaps the sound wasn't getting to that part :-)
Hi Vince 5 mins into the video and i suspected the amp ic to be bad replace it and the sound should come back.
Wow! This video is great!
Could it have something to do with the buttons on the front of the device? Maybe there is something keeping it from switching... I also like the idea of lifting the mute pin to see if sound comes back...
Possibly, the mute pin leg lift is a great idea :-)
I like the suggestion that the 3.5mm jack may be wired in a proprietary Sony format. You may need to double check the connections on the output plug and see if the voltage is varying while the unit is playing.
Yeah, I can do that quite easily by just touching some wires from the headphone jack that I was using for testing on the different parts of the plug on the headphones to see if anything comes through :-)
Eric Schettler This is my idea this is a Sony Walkman right so I've seen in the past Sony likes to make custom things for there products maybe you have to use a Sony branded headphones that came with this Walkman at that time. It sounds really stupid you think you could just plug any pair that fits but I have seen moments where certain headphones just don't work.
@@ryans413 Sony loves to be proprietary. :) Turns out this wasn't the issue (see the revisit video), but was worth a thought!
Eric Schettler Oh okay yea I didn't see that video
Vince can you try fix a DJI phantom 3 pro? Would love to see you have a go at one with a ESC error :)
Does that Walkman have a rectangular socket for the rectangular section of the headphone to plug into as the headphone is not a standard headphones connection.
You could try lifting the leg on the mute on the pre amp chip to see if it works 😀
Thank you. That is a nice idea. A very good idea. I may revisit this one once all the suggestions come in :-)
Also rewind is not working and fwd is very slow is that mortar issue?
You can find the service manual in the message below Vince. I do it like this as sometimes RUclips blocks web addresses and you need to approve them first.
www.manualslib.com/manual/912096/Sony-Wm-Fx463.html
Thanks Colin, I have downloaded the PDF so although I do not understand it I can try and work back from the headphone jack to see what is what :-)
My Mate VINCE Good luck. Don’t let the bastard grind you down ☺️
Great video.
Hello, This wire (6:30) has been torn in my walkman. How can I fix that?
So is your eBay store back online I been wanting to look 👀 at those items you have fix 😊
Hi, I don't sell the items that I fix unless they are for the eBay repair challenge. I may do one day, but I find eBay a bit of hassle on one off items as writing out the listings can eat away quite a bit of time, especially on items where you make £5 profit :-)
try getting an amplifier - like your speaker , attack grounds together then use the tip of your speaker jack to move around the board to see if you can pick sound up anywhere else on the board? you may need a preamp too
What a great idea, so use the ground from the 3.5mm jack from the speaker and connect it to ground on the Walkman then probe different pins on the chip to see if any sound happens. I suppose a short would still knock out the sound but this method would work if there was a cold solder joint or something on the board :-)
@@Mymatevince yup bang on (signals may be very weak though - and you've no chance of picking up directly from the tape head)
I have black Sony and the belt has gone do u know where I can go to get fixed?
34:40 Don't keep desoldering pump pressed like that, constant tension is not good for the spring. Release it when not in use.
I remember a Sony walkman wireless internet the 90's in Japan with remote control.
In that's era in Japan they use a metal rechargable battery or nickel cadmion more 80's
In the remote control they put some eq programmable with LCD and someone come with radio am/FM/TV.
Good memory's the old walkman
Some tape palyers use a mute switch that will actuate when the player is in any other function different to play. That is to avoid hiss during rewind or FFwd. This switch is desactivated only in play. Should be on the PCB .... Also, the radio, at first, like it didnt want to tune. Phone jack defective ?, most of this walkmans help themselves with the earphones in the jack using them as an antena ...
Thank you. Interesting what you said about the defective headphone jack as another viewer has noticed a hairline crack on the board on the part that feeds the headphone jack so this could tie into that radio struggling to tune in :-)
I am ready for the next video.
I just realized that the silkscreen on the board shows how the belt should be put on.
Hey Vince I have a possible idea you can work with for some of these videos. Things that you think you could fix in a short amount of time you should do a live video so that you can have your community give you suggestions with what to do
The problem is, some times the fixes can take me hours and hours so I never really know how long it is going to take before I start it. Once I get better then it is something that I can look into as it would be fun. I don't think it will be any time soon though :-)
Don’t think anyone’s said this BUT the bits are DESIGNED to break off. They serve like a tamper seal so Sony (Or Who ever made it) can see if it’s been opened
1997 was the year i was born lol
Tony warisa 1990 for me I'm old lol
Lol
this little brown things are cap? i always thought these are resistors O_O how can I see the difference between a SMD Cap and Resistor?
I dunno,man
Is a sound chip a thing? If so, maybe that could be the fault
Swaggin dragon Yes sound chips are a thing called pre amp chip some are decoders but that's more in receivers that need to decode the surround sound mix. The information from the type is in analogue format and needs to be decoded to a stereo output that then goes to a pre amp witch is then controlled by the volume switch witch then is outputted through the headphone jack in a stereo format. The types already in stereo so there's no need to really decode that much it's not like a surround sound mix where it needs to put information to certain speakers at a given time it just converts it from analogue to digital out of the headphone jack. So good place to start be the headphone jack witch he did work your way back could be a faulty sound chip cause radio dose not work either that be the same thing radio is actually analogue too the radio we listen to in are cars is analogue there is digital radio but the normal radio we all know is still analogue and that as well needs to be converted to digital out of the headphone jack
Congrats on 370K Vince!
Any plans on the big 400? Only about a month away...
Cheers mate have a good one!
Thanks mate, no plans at the moment, I will have to get my thinking cap on :-)
@@Mymatevince i have Sony Walkman NW-E405 : (www.idgcdn.com.au/products/image/444/angle/3/614x480/108207/) no power, i check the battery 3.7v but the problem may be in board
22:14 there are 4 unsoldered component legs ... whats on the other side ?
I will need to check it again. I think I looked at the time and deemed it was normal but I can't actually remember, it looks like it was that way from the manufacturer :-)
And here's the mandatory lovely bubbly.
I had one of those in the late 90s
I had problems with sound output from the headphone jack with various Sony walkmans. Seems some kind of contact problem
Can you do a/multiple collection video(s) over your entire game collection?
It probably has to do with the short at 31:15. Also you can check if there is any voltage on the 3.5 jack while on radio mode.
Thank you, do you know approx. how much voltage should be present on the 3.5mm jack and does it vary between radio and tape?
@@Mymatevince It should not be a certain value (since it is a varying sound signal) but presence of voltage between left/right and GND might indicate sound (on a different pinout than the speaker uses). This is not likely but it is worth a test I guess ☺
Try watching videos here on RUclips about headphone jack problems on other devices, that might give you a hint as to where the fault is.
Lucas Pagan Got my headphone jack wet once audio stopped working once it dried out worked again maybe he's got too much corrosion inside is try changing the whole jack itself
Hi Vince the voltage on pin 7 is too low it should be nearer the battery voltage.
Hi there, thanks for the advice. On this one a viewer noticed a crack in the board so I have just done the 'revisit' video if you are interested in seeing the final outcome :-)
does anyone know the dimensions of the pinch rolls on the sony wm-fx453 model thx
I have this same model Sony Walkman (wmfx-463) in really good condition with all the same features everything is fully working and ive tested it Radio & Cassette work fine, i'm trying to put a value on it for resale
It comes without headphones, No belt clip and no tech manual and theres no box with it any ideas on value anyone ?,its not a really a vintage one built 1997... i'm hoping its worth a bit more than the £1 i paid for it at a boot sale, any pointers on value much appreciated-thanks in advance
Power out usually refers to an output be it voltage or Audio, so it makes sense a stereo Pre-amp/Amplifier has two Power outputs and two power inputs, thats six pins for a chip, so what do the other pins do, well various functions can be assigned ; Eg filtering, muting bias and even feedback pins to control stability and or even lower distortion.
Now Vince I noticed you used two brands of batteries, which BTW is just as bad as using batteries with different levels of charge to them, Yes modern batteries for the most are now designed so that this is not to much of a problem by them exploding via a mismatch of charge to them, but even so there still is a chance if a really bad battery is connected with a slightly over charged batery fresh from the factory, Another reason why it's a bad Idea to use different brands is the fact each battery manufacturer have different chemical compositions for their batteries, thus one or more batteries may experience extreme stress and thus induce leakage, not to mention the significant loss of charge to the battery with the highest charge to it..
Thanks for the tips on the batteries :-)
KorAllRBare Good point I have some battery's brand new that just don't work in my remotes I can only use Duracell it's wired but no other battery's work in the one remote I have
Yeah, put it down and have a little think. That fixes no end of problems (usually inspiration comes when you are least expecting it).
Hello Vince i like your videos so much and you in general but please its enough repairing Walkmans and cheap stuff its not worth your time and your money iam waiting for more console's repairs and more have a lovely day
Mido from Germany
cd & tape players are a thing of the past, not even I fix them anymore its not worth it anyways besides no one in the world collects audio tapes these days due to them being to easy to snap or wipe with a speaker magnet also cd's can be played on consoles aswell as computers
@@jasinere35 cassettes are cool
@@csabasanta5696 really why ?
I personally like the nostalgia.
Another belt problem? :D greetings from Poland :)
I own a lot of Walkman's and most only output sound properly with a 2 pole jackplug
Simon Morris Yea that's stereo sound
With Electrolytic caps on tv's you go buy the 10% rule but its not a must follow thing.
It sounds like it's moving too fast on play
you improove your skills pretty fast, but you need to be more gentle to electronics, don't toss them that much ... anyway your videos are interesting, keep making them ;). I think the problem is with square chip on the back PCB. It is LA4xxx ... this chip is main headphone amp and tape head preamp. Many years ago i had to change a similar one of theese to fix similar sony walkman. Set your iron to 330-350C ... 400C is too hot, solder melt on about 187C. Try to reach front board, where is main processor, the board may be coroded and cause the problems. Also try to connect the grounds on walkman and your test power amp and poke walkman's volume potentiometer pins with one of your test amp channels for any sound.
Great advice, thanks for sharing your knowledge :-)
@@Mymatevince its my pleasure, you remind me of myself when i start electronic repairs some 25 years ago ... it was hard because intel was insuficient back then... ;)
I had one of those.
You didn't have any audio problems on it did you? I would like to see this one working again :-)
@@Mymatevince it was a long time ago, can't remember what happened to it.
I noticed you said contact cleaner but did you try deoxit? works better for me.
Thanks for the tip. I haven't tried it yet. I ordered up a small tube from Amazon a couple of days ago after GadgetUk164 told me about it. Hopefully it will be here soon. The reviews look good so hopefully it will work well :-)
@@TampaTec your wife sold it on Ebay?
Back then these little tape players cost over $100+ if you wanted all the buttons and a screen with digital number display.
There could be a dirty contact with the volume wheel and I would probably change the battery on the board which looks like the green capacitor on the back, www.manualslib.com/manual/912096/Sony-Wm-Fx463.html?page=2#manual link should be able to get you to a service manual if it's clickable
Of the radio side of things, like with phones with the radio chips, the headphones become the aerial and its likely its got white noise suppression which means it only makes a proper sound when it tunes into a radio station. I had a portable back in the day that had to use special aerial headphones otherwise the radio never got a signal which I think it took from the earthing.
Seems to have a crack near headphone port
21:30 c321 both side connect to ground,use service manual for fix otherwise lose time
There's no batteries in it why is the clock still working
I think it has energy stored in the capacitors that keep the clock working for quite a while after the batteries are out :-)
Capacitors store power even after you take out the battery's there will still be power until it all gets used up.
The belt routing it on the circuit board
Thanks, I didn't spot this while filming :-)
You should always check audio on cassette not on radio! And maybe with amplituner.
From what I can see the capacitor that is reading short goes to the switch next to the head phone jack. It appears to be a three pin switch so the center pin should lead of to the faulty component(more than likely the LA4585 chip). But by flipping the switch the other way the short on the capacitor should disappear. If it doesn't then the faulty component is after the capacitor which I can't see in the video.
Brilliant fault finding advice, I will look into this again as I have quite a few suggestions on the comments here so a revisit might be done. Thanks again :-)
Have seen the first video but cant find any more apart from this the 5th one.
Hi, if you type Walkman into the search in my RUclips channel you should find part 2, 3 and 4 :-)
@@Mymatevince Cheers mate, Keep up the good videos, As a fellow tech I like the way you approach each repair and how you go about fault finding.
i got a walkman from 10 years before this one
You can look over the service manual which have schematics : www.manualslib.com/manual/912096/Sony-Wm-Fx463.html
Hope someone can help you solve this one :)
Same here Craig, I would like to revisit this one :-)
You need to get yourself a usb soldering iron for smaller work i hardly use my big one now, you can get them on ebay if you get one give us a shout out.
It's a Dvd lol
Get yourself one of those cheap DSO kits
Try changing out the actual headphone jack it's self
The only resolution there is is 144p or 360p
I have 1080p available. Sometimes RUclips takes a while to get better resolutions available.
@@Christopher_T_Paul now there is 720p but i don't know why the video's don't upload in full hd and get downscaled to the lower resolutions for older phones/tablets and the nintendo 3ds
It would probably be more efficient on googles servers if it was setup like that
@@nathanmead140 Umm, thats exactly what happens. The creator uploads in the best quality they can and RUclips will then process the file and offer different resolutions to suit your needs.
@@Christopher_T_Paul but then why are the low resolutions on first then the high ones (almost everyone has a good phone that can do 720p or better and not very many people use RUclips on old stuff [except the 3ds but there are no notifications on that])
Usually there are 2 transistors 1 for each channel maybe the 2 just underneath the sound chip and to the left might be blown... not shure it’s been a long time since I’ve done any repairs...
Thanks for the ideas :-)
best fix ever is bin it especially when sound goes
It is that chip that is the problem
Do you think it is, I thought it might be but I didn't really prove the fault :-)
My Mate VINCE it most definitely is, that chip outputs the sound and for whatever reason it isn't doing so
Thanks mate :-)
Vince oh Vince... When are you going to STOP calling diode test mode 'continuity test'???? It's NOT CONTINUITY BEEP!! IT"S A DIODE TEST MODE YOU NUMPTY! USE Ohm MODE TO TEST FOR RESISTANCE/CONTINUITY!
He's learning hopefully.
Sorry but why can't you use the 'beep' (diode) test to check for continuity, it is because different multi meters are set up differently so some will beep at different resistances? When you use the Ohm mode what do you class as a short (it is above a certain figure or a certain range) as when I have tried it I get different readings which confuse me but a nice beep is quick and easy to listen to. So when you are fault finding looking for a short to ground on a cap do you not use the beep test? Please explain it as if you were talking to a 10 year old and then I might be able to understand it because remember I am a numpty when it comes to this hence the 'trying to fix' title of the videos :-)
@@Mymatevince Vince! No worries here - i'll explain. Main thing is - it WILL beep even if there's no DIRECT continuity. So, some circuits have like 123ohm resistance - in diode mode it WILL beep and you may erroneously think it's a short! So, better to get/build/buy a 'continuity tester' - those are very popular with car mechanics! Same principle but it will only light up/beep if there's DIRECT continuity. Also, diode test mode is hit and miss because some circuits are polarized, so it will, say, beep when probing a-probe to point a and b-probe to point b, but won't if you swap the probes around! Any questions - i'll be happy to answer! LOVE your videos. It's a mix of nostalgia, floorwork (i still do stuff on the floor sometimes) and useful tips/exp! Thanks again bro! No offense meant :)
ps. in ohm mode - short probes one to another, notice the resistance displayed (vary with diff models of meters and probes). This is a 'short/continuity' with your setup.
Thanks, so on my Surpeer AV4 it does have a continuity mode which is the one I use (the one that beeps) so is this definitely different than the dedicated continuity testers on eBay/Amazon? When I short my leads on the Ohm setting it reads 00.21 Ohms - 00.14 Ohms (varies). If I was using this setting across a circuit board which may have slightly corroded pads my continuity setting would still beep but what range on the Ohms settings would still indicate a short, for example if it read 00.90 Ohms or 1.50 Ohms would this still indicate a short. This is what confuses me as it won't always read 00.21 Ohms but it is still a short but perhaps a dirty one. Hope this makes sense, it does in my head:-)
@@Mymatevince 1. sub-1ohm resistance is a virtual short, also even expensive meters sometimes struggle in sub-ohm range. 2. 1.5ohm is not a short technically. corrosion and such can really mess with digital circuits because of that (minus the trivial corrosion of in voltage parts/connectors). 1.5ohn is a load, not a short. 3. at 20:36 if my eyes are correct i see 'diode' sign displayed on the mm screen. i checked the manual for your meter and it said that you have to press 'orange' select button after setting the big switch to this mode, until 'waves' pictorgram is displayed. this should be dedicated 'continuity mode' of your mm. not the 'diode' icon one. 4. diode mode can be used as a basic cont.test but ONLY when dealing with wiring and such. not for testing boards and such.
whats with the half posh half Chav half polish accent he uses in these videos? all the TH's being pronounced correctly by a cockney accent sounds wrong!
First
nice