MORE ARGOS CUSTOMER RETURNS to FIX - Can I Make More ££$$€€
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- Опубліковано 28 вер 2024
- Hi, in this video I attempt to fix more Argos customer returns.
Will anything be fixable or will it all be broken beyond repair.
Let's find out.
If you would like to support these videos, please click here / mymatevince
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.
if you record your own voice on a tape recorder which is too slow or fast your voice always sounds correct because you play it back on the same recorder.
The Motor has a regulator inside the Metal Case. That´s why the Motor does not respose to different Voltages. The Speed of the Motor can be adjusted by the small Hole on the Motor.There is a potentiometer behind the hole.
Exactly what I came here to say. Slow tape will be slow during recording and playback. You need to listen back on a known good tape player.
Never noticed this comment I commented the same as soon as he did it hehe
The speed controller may have failed. The motors with speed controller are (or at least were) available. This is probably a clone of one of the higher end motors, and the speed controller is probably not very high quality.
That's what I came to say and it really annoyed me that Vince had no idea..🤬
I thought the same.
Hi, the excessive pinch roller pressure on the tape player at time 25:00
You were nearly right if you look at the other end of the spring you can see it's not seated in the little notch on the chassis. It's jammed in the play head.
21:21 I'm not sure if it will help, but when I once disassembled a tape motor, I found a circuit board with a potentiometer that control the speed of the motor under the metal cover at the back. With this, you can usually readjust the motor's speed. There's a small hole in the motor, so maybe you can access the potentiometer through it, allowing you to solve the issue without having to fix the mechanical problem.
Nice one 👌👍👍
Vince, about the "self-healing" radio, my guess is that the problem was the switch that blocks the batteries when the AC cable is plugged in.
It might also be a partially shorted capacitor, micro crack. The transformer has a limited amount of output power, but when the batteries were inserted, the inrush took care of the short. Happened to me once, and I realized after the short was back. It was a 0805 100nF capacitor. Also heating it would clear the fault.
Yes agreed. He needs to try the radio on AC again, but without the batteries. I don't think it is fixed.
That would be a perfect explanation if it wasn’t working on batteries - the switch just disconnects them. But it wasn’t working on the AC instead, so it can’t be related to the switch.
I've had that issue with a radio, the one I had must've been designed for a plug that was a bit larger, or the switch was worn out, because it would only work when the cord was twisted about to depress the switch enough.
Love these videos. The guys' articulate and down to earth approach is great .
The only thing we can deduce from the last few videos, is that if somebody gives you a birthday or Xmas present and it's made by BUSH, you're going to be devastated. And inconsolable. You may as well send it straight to Vince, unopened, with a note saying "Vince, fix this. Cheers".
Hahahaha
The motor has the adjustment, but a lot also have a secondary adjuster on the board.
Thank goodness for people like you. Anything you can save and flip is one less thing rotting in a landfill.
i thought the hole in the top of the motor was a speed adjustable pot?
@25:30 yeah I agree, that spring looks wrong, straightening it looked like the correct thing to do.
What a great episode! The last one looks really good. I like the wood and the vintage look.
The fact you're fixing such cheapo devices is crazy, HOWEVER, it' s one less thing in the landfill and to be highly applauded. It's the kind of repair I do myself, often not cost-effective but it saves things from being thrown out. With the cassette deck, I think you HAVE fixed it, as much as such a flimsy, basic transport is capable of being fixed. It's tricky managing friction with a cassette deck - too little on the pinch roller and the tape will run too fast, too much and it will run slow. Good work, StezStixFix brought me here.
36:50 I marvel at cheap modern radios like these. The tuning can be remarkably good... there must be some kind of circuit in the generic all-in-one radio IC that allows it to really "lock in" when it gets close to a station. I found a new-in-box pocket radio forgotten beside a trashcan at work earlier this year, and I was surprised by how well it worked. I looked it up on Amazon and it was $25 CAD... that's £15, just like that Bush radio.
On the bush tape recorder, the blue head that moves in is the Erase head (during recording) not the record head as you stated.
Also, no good recording to check the speed on the same device use a known good device to record your voice the play back on the suspect device.
These little tape deck motors have speed controllers built-in. That's why you wouldn't get any speed change with varying supply voltage. There is a pot behind that little hole on top that sets the speed. Speed should be about the same with and without the load. It can only change when there is too much load put on it. I bet that some cleaning and lubrication od the mechanism would make the thing work again. Cheap and dirty way to know if it plays at correct speed is to record single tone of known frequency (1 kHz is often used) on a known good working deck and use that to set the speed. Simple spectrum analyzer phone app should be good enough to measure the frequency.
There’s a speed adjustment screw under that black hole on top of the motor just needs a tweak
The tape cassette player speed adjust is the trim pod on the motor the black dot is a rubber seal with veripot under it
The tape recorder, you could see the steel rod that the rubber wheel pushed against deform (bend) - after you straightened the spring, it stayed pretty vertical when the wheel pushed against it.
I agree the capstain(spelling) sets the speed of the tape across the head. if the bearing is bad in that, it would allow it to bend over and cause a lot of friction in that bearing. Good catch @TheSudsy
@@wanjockey 100% that looks like the bearing is the fault
That spring was really pushing the pinch roller onto it! I have several very cheap portable cassette players that all have speed issues. I thought it was just because they were crap, which they are, but now I realise they may also need adjustments to the pinch roller tension.
@@bernardleaf1397 the plastic bearing is cracked... you can see it at 24:21... they are normally not cracked
@@TheTkiller9999 thats just the clip holding the capstan shaft on
Hey Vince ! showing our ages.i had the ZX Spectrum + 2 with the cassette deck built on !
Great video Vince I love your problem solving logic.
Still smiling over the blown away transistor , made me lol
The speaker in the little radio was tiny compared with the grille.
Just goes to show the cheapness of the cr4p we buy daily from China and we’re all guilty of it :-( where’s it all gonna end ( apart from landfill
Keep up the good work Vince
I sure wish I had videos like this when I learned electronics repair 45 years ago..😊
The motor have a small hole on the top you can see it black dot over there. Inside there is a potentiometer which allows you to change the speed of the motor
I love these videos. Not such a fan of the RR vids, but these fix vids really relax me.
Vince is a Renaissance man and can do anything.
You 100% fixed the tape player, that kink shouldn't have been in that spring. That was the problem and you definitely fix it.
21:00 Usually motors that are used with tapes are changing speed using potentiometers that are built into the motor or located on the PCB.
Since you've tried to ignore the PCB and provide voltage from separate PSU to the motor and the speed haven't changed, the potentiometer is located in the motor itself.
That hole on the back of the tape deck motor is for adjusting the speed. Maybe it's out of adjustment or the guys at the factory didn't do it at all. There should be a potentiometer in there (usually it's on the pcb or on the back of the motor, that seems to be the case there)
also the blue head is an erase head. It's usually a head made just to do that, but manufacturers use a magnet to get it cheaper
I was expecting that ~ that “BUSH” is a zombie brand, and it was made in a Chineseum crap factory ~ where quality control is non-existent
its the torque caused by the tape tension. You have to fast forward the tape to the end and then rewind and play it unless you back off the spring load. I used to have this on my personal tape player pulled it apart and rebuilt it and stretch the spring. If it gets too slack it will cause the cassette win up and jam.
On the cassette recorder the small shaft that the roller is pressing on the bronze bushing wears out and becomes elliptical instead of round. It will slow down again eventually. It is playing back at the right speed because you recorded it at that speed. lol. Use music and a metronome to get it to the right speed. Set the metronome to the known tempo of the music and adjust the potentiometer for the motor speed control until it matches.
On the bush cassette unit that is playing slow you have a speed adjustment on the motor with a little flat blade screwdriver just adjust it to get the correct speed
The problem with products today if they're cheap nobody would bother to spend time and money to fix them as there is no money to be made but good videos and educational too.
You were right with the spring the next side of the spring have to go into the small tab cause it loose
On a casette player, the playback speed is given by how fast the tape spins. So it would have to do with the spinny things that drive the casette. Maybe they are dirty or something is preventing them to spin properly. Or the motor is malfunctioning or it's not receiving enough power to spin at the correct speed.
Recording your voice on the tape player isn't a good test as it will record at the speed the current mechanism is running at so playback on the same unit would be OK. The recording may playback fast or slow on another deck. Like one of the other comments you would be best to use a calibrated 440Hz test tape however given the low quality and cheapness of the deck playing a prerecorded tape would suffice.
Great video.
Yeah a quick test tape using Audacity or the like, great point :)
Re.....the slow cassette....note on the motor...there is a speed adjust potentiometer.... There have there own regulator built in. Which is why when powered wt adifferent voltages you get the same speed.........
Also. Recording on a slow deck will play back fine for obvious reasons
at 24:21 the metal capstan that turns... the base plastic has a crack in it... and that allows the capstan to be pushed too far over and bind... causing it to slow...
"Bush is a British consumer electronics brand owned by J Sainsbury plc (Sainsbury's), the parent company of the retailer Argos" - that's why they're all Bush, it's their own brand.
I haven't got clue about electronics and do not know a thing about what you are talking about, things like capacitors and resistors, but for some strange reason I find your downloads very interesting and captivating. Do I need help ???
Vince if you look on the motor itself there is a hole on it. There is a variable resistor inside basically a speed controller built-in to the motor. You'll need to take a small screwdriver either a Philips or minus I can't remember and you can turn this control to change the motor speed. Try not to touch the metal (not sure if it matters).
Modern cassette machines have this control mounted on the board and the board sends a specially timed pulse signal to the motor as well as power.
Putting different voltages to the motor will not matter. It's probably just switching on 6 volts from the batteries when you press play or FF/REW.
Thanks The Man, I will have a look for it. Nice one 👌👍👍👍
It can matter if you use a metal blade screwdriver and you touch the case. I have seen motor speed control boards burn up by doing that - but it isn't a problem with all motors, just some. Plastic shaft screwdrivers with brass tips are just the thing for doing this.
I have been doing it for a long time so I can get a screwdriver down that hole and onto the trimpot without it touching the case.
I was going to suggest adjusting motor speed on the cassette player, but I like your fix better.
Just a note to consider - For the tape recorder. If you record on a slow mechanism it will in all likelihood playback properly as the playback speed will be the same as the record speed.
Sorry I saw that there is already a thread for this very statement lol
Nicely done! Very good isolation figuring out the wonky chip on that speaker 👍
Thanks Garth👍
After removing the 3.3V regulator ther won't be a voltage drop across the resistor as there is no current flowing through it.
I can't believe you just deadpanned " 1.784 amps. That's gonna be AMPle."
on the cassette player you can vary the speed on the motor itself, there is a potmeter beneath the black dott on the motor.
Yes yes yes. I was screaming look at the motor lol
Ha ha. Recording your voice won’t work cos the record and playback speed will be the same on one machine. The motor has adjuster on the back.
recording your voice and playing it back will always sound right as you are recording and playing on same system
Kudos from a fellow tech in USA good job trouble shooting
😂 I might be slightly evil cause when that tiny part flew away I giggled just a little!
😂
your cassette player that first head is the erase head, the read head is the one that also records, you sounded fine as you record at the same speed you played it back but i would have said you fixed it As i am sure you know its that wheel and the pin that set the speed of the tape.
tape player,, the ruber hole in back is a speed adjuster,! on the motor
Loved this Vince. You should do an episode on how to identify components and how to trace the route on a pcb .., both of which I struggle with 😂
On the tap recorder, why not just adjust the motor speed pot?
Why the transistor failed? Could be the overload in the circuit behind, very often from a (low quality) electrolytic capacitor needing reforming (when mechanically abused even before assembling, they tend to develop a high leakage that uses to disappear after some time, but it could overload the circuit upstream before it does so).
For the cassette recorder, just adjust motor speed... Put a thin screw driver thru that black hole on the motor's flat surface
you cant record yourself on a device that you think may be playingfast or slow. as the recording will also be fast or slow and will play back at the correct speed but ONLY on that device.. as the recording will match the motor speed..
(you should really have a constant tone recorded from a known good source, and then compare that)
Oh Vince, really treating us well with more returns repairs! Makes my time at home that little more enjoyable!
hi when they made this they did not set the speed up right there's a mini pot what the volts coing in to the motor will not change the speed of it
i have worked on alot of cassette decks put in a mini driver and you can hear the audio change the pcb in side the motor reg the speed of it
to keep the motor turning at the right RPM the reel to reel get there speed of the mains
the tascam 30 line have a pcb that deal with the speed it's out side of the decks
A scope or signal tracer would save you a lot of time. I've used them, since 1966.
I noticed it wasn’t until you put batteries in (the radio fix) that the amp finally powered the speakers. Up to that point, I think everyone used AC. Possibly the batteries had some means of energising the amp circuit?
The motor has a potentiometer behind the whole, you can adjust the speed there
With the radio, I'd take a close look at thecontacts on the battery cutoff device that makes and breaks when the mains lead is plugged in
To decrease the chance of the transistor failing again I would slightly decrease the value of the resistor connected to the base. You get only 13.8 instead of 14.5V indicating the transistor is not fully driven. You can check the input voltage of the transistor. Input and output voltage should not be more than 0.3V different. It looks like design fault and it will come back when you put on your device with loud sound for a long time. Such a small transistor can't handle several watts of power drop for a long time.
Hey Vince!
I am sure you have got this question before, but what do you do with all the items that you repair?
Thanks again for doing this, we all need to take care of our things, just like the generation before us did, if we want the generation after us to have it as nice as we do.
I think he sells some stuff, just based on his comments of "I wouldn't feel comfortable selling that", and he keeps the rest or maybe gives them away. He's said before his kids will sometimes "claim" items if he can fix them.
Bush use to be quite good quality back in the day. They made some really good ValveTube equipment. Unfortunately, like a lot of these higher quality brands that went out of business, the brand name was bought by a holding company and licensed to put on cheaply made stuff, usually chineseum in origin. I really don't know how much money you can make off these when you add in the cost of your time to repair them, compared to how cheap they are new to buy.
As far as the audio chip on the first radio, it was labelled on the circuit board what it is also so didn't need to remove the heatsink for testing, but obviously needed to be done for replacement :)
On the cassette player with speed issues, I noticed a lot of play in the Capstan when the pinch roller pressed onto it so I would think this will not be reliable long term. Recording your voice on the device then playing back on the same device will sound normal as recording and playback would be at the speed of the device. I think it is that play in the bearing for the capstan is the issue.
Most of these things are not tested when returned. Because they are so cheap, they are just refunded or replaced if sent back so the only test is when a customer says it is faulty.
That bluetooth speaker. The battery is a 7.4V battery, that is written on the battery. The batteries are usually 3.7v each cell on average.
23:00 I can see that the left side of the spring is on the wrong catch, there is a hook stamped out of the sheet that the spring does not reach.
The speed controller on the cassette deck was clearly visible it's inside the motor you could see the black hole on the motor it looks like a black dot it's usually covered with black felt to keep dust out use a trimmer through the hole
As comments below most of these DC motors have a speed adjustment pot under the rubber cover.These tiny SMD ICs for voltage regulators ,there is no way current rated in real life to their spec sheets this is why they fail so quickly
My daughter had that first Bush boombox. The LCD display started to lose segments after a couple of months.
The radio which came to life by itself at 36:00 seems to have a CI with a part chipped off on it's left side...
ON THE CASSETE PLAYER THAT HOLE ON THE BACK OF THE MOTOR HAS A PRESET FOR THE SPEED
It would be worthwhile to offer this as a repair service though. There are repair cafes now throughout the country and a few market stalls do this. Charge a tenner for repair you could do OK but not earn a living unfortunately
23:15 shouldn't the spring be hooked to the point at right from the tapehead instead of behind the tapehead?
LOL - that's blown it! Thankfully you found the transistor you blew off else you'd be 24p worse off! :)
Vince, you've got more bush than a 70's porno. 🤣 🤣
Given the fact that they appear to be a cheap brand, do these products tend to fail more often than other brands ?
Great vid by the way. 👍
Ps, for the cassette player, I think you were spot on with the roller. These will cause drag if pressed to tightly on the guide bar. I have seen them press so hard that they snap the tape and bend the bar. They literally need to 'just' touch the bar. Anything more is problematic and will often stretch your tapes over time. 👍
For the vintage looking bluetooth speaker, it has the battery voltage details printed on the wrap around them. It said 18650 battery type which are 3.7v, the label said 7.4v, indicating 2x batteries. So 7.4v is the number you were after. 👍
Nevermind the 24p it's a short or mechanism hazard if you dont find it.
I'm certain if I watched all your videos I'd eventually get the information. But as you're working I'd love to know what materials you're squirting here and melting on there and what they do in helping you in the soldering process.
Love the channel, I like to take thing apart so any tips on where to buy returns would be very handy.
I am wondering if something changed values enough to overload that transistor causing it to fail over time or if it has an extra load on that circuit. That would explain why the voltage is a little lower.
THAT BLUE HEAD IN THE TAOE RECORDER IS NO A RECORD HEAD ITS THE ERASE HEAD
Vince did you notice the red light was off after you connect the bench pws on the bluethoot speaker? Also now that is working with the new regulator the red light on top is no longer turn on, appear that is the low battery alert.
plot twist, a fan of Vince created the bush company and intentionally makes cheap products so Vince will always have something to fix
On the bluetooth speaker, it looks like there are lots of unpopulated spaces for resistors and especially capacitors. This is not unusual, but it does lend me to believe that one or more of the components might not have been properly placed prior to the solder station at the factory. Hence, my money would be on a manufacturing error rather than a post assembly fault.
i can see where the other end of the spring should go, the little hook thats doing nothing
Sorry Vince but I nearly wet myself when you removed the Bush Cd radio audio chip and on the board was printed the IC number and part number.
😂👍
Guess on why that transistor fails.. the crappy heatsink on the amp chip, if the transistor is specced right and the manufacturer isn't using bad parts.
Could you rig up a mains power socket that's actually run from a bench power supply to limit the maximum amps to something like 1? That way you could plug things into "mains" and still be safe-ish. Wouldn't want to loose you to a five quid crappy radio :)
Very surprised how interesting I was going to skip bu your drawing me in
*** - on that Cassette Player... could be the head closes in too close.. that will also slow it way down
Love to yellow matt !
What you call the record head is probably the erase head.
12:23 I laughed so hard a bit of wee came out
15:05 if I include the time taken and add the cost to the 24p it’s not worth it if you’re not a UA-camr
16:30 What happened to the audio?
19:10 Is the screen on that scratched/cracked? Looked weird on the vid
37:12 Can’t get enough of The Archers huh? If it wasn’t BBC I’d suspect a subliminal sponsorship 😂
57:51 Better than it being landfill!
Keep up the good work fella and, as always, stay safe!
Just a quick question about the Bluetooth speaker why would a company make a battery in series to waste power when a parallel would give a more battery life? Genuine question as when you were looking for the fault you discounted the battery voltage size quickly again it's a genuine question 😁
To add on to your questions: Why was the voltage regulator only specced for up to 5V or something? Why is it measuring battery charge by the voltage regulator?
Part of me wonders if the battery connected to this circuit *should* be parallel and droop the voltage regulator when low. Maybe the fault was the wrong battery pack?
It might be worth for Vince to see if charging works. If it was meant for a parallel pack the batteries will drop way too low.
Tape decks have speed adjustment! Like a tape with a whistle of a commodore game but at a tones for adjustable speed resistor 12voltvids does it all the time
Sounds like the Archers need to sober up for the next go-around!
Vince, just curious, what do you do with all these things one they are or aren’t fixed?
24:00 has the left-hand side of the spring come out of that raised bit that looks like it would hold the spring and take some pressure off the right side? It looks like it's popped out and is resting on the crystal.
To be safer with mains equipment you should get yourself and isolating transformer so you are not directly connected to the AC.
*** - on that classical bluetooth speaker.. using hot air with all those caps... that's scary...
you are a very clever man.
I'm curious to know if you can get any return on the pink radio. They're not worth anything here, even the Goodwill shops can't give them away.
Sorry I didnt shout loud enough when you started to desolder the heatsink om the cd/radio - they had the ic number printed on the pcb U1 and then the type 🙂
@mymatevince Just had a thought, but I could be completely wrong. Could it be that the voltage regulator is faulty and putting out too much power, but the speaker just acts like there's not enough power and therefore says 'low battery' because it doesn't have a specific message when there's too much power going in if you get what I mean, so it just defaults to the low power message and also the voltage being a bit high on top of that? I'd try replacing the regular if I was you? Sorry to everyone if this is a stupid thing to say. 😉