Game Boy Advance No Audio Repair Fix Voltage - RetroSix

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[@mrg1619]

Great vid!!

[@sipepguru]

You, my friend, are an impressive person, a great software developer and now this.

[@RetroSix]

Thanks. Much appreciated

[@brandonsteger8685]

When you say "lets take a look" I hear "lets take a LUKE". Love the videoes, thanks for your contributions to the community!

[@RetroSix]

Haha. Now I need to try and not think that every time I say it

[@simonwood288]

Thanks for the awesome tutorials. We have a load of gba sp mobo,s with charging faults if you ever fancy running through all the possible causes that would be amazing.Thankyou

[@RetroSix]

Certainly will given time

[@jwhitejr96]

Can you explain where each pad of the volume wheel goes to I accidentally pulled one up and I can’t seem to trace it on a working board. My current issue is the volume doesn’t go all the way down like I’ll still hear it if the wheel is all the way down

[@alvaroalvarez7701]

Me too

[@TheOnlyOwnedbyCow]

What are you using to power the gameboy? Is there a budget friendly option? Also can I use a multimeter in place of the oscilloscope? Or do I need one for this? Is so, what is a budget friendly option?

[@RetroSix]

Bench power and oscilloscopes here. retrosix.co.uk/Diagnostics-&-Bench-c141184571. You would need oscilloscope as multimeter won't do

[@caraLoxx]

Hello @RetroSix, your video and wiki are very useful to me, I try to fix a GBA with no sound, I follow the trace and went to c45 point, I get 3V there, if I flip the board and take the same point I got 0.6V, this is the same voltage I get into pin 10,14 and 16 in the Amp and at the volume wheel too, did I need to short like you do or not. I didn't understand why I didn't get same voltage in front and back of the board for the same point. Thanks in advance

[@RetroSix]

If you have different voltage from top to bottom your via is damaged and you should run a wire between top and bottom to rejoin the connection. However C45 is headphone out left and it should be less than 1V so I think you are measuring wrong place perhaps. Join our discord for more assistance discord.gg/retrosix

[@pauloladislau]

Obrigado pelo vídeo, voce pode disponibilizar os arquivos e fotos da placa que você usa no video?

[@benjaminsauder7926]

This is really cool! How do you get the camera to get so close up?

[@RetroSix]

Microscope

[@kevinc9264]

Hi, I had an issue with very soft audio. Where do you recommend that I should start looking into ?

[@RetroSix]

Trim and resolder speaker wires, check voltage on volume wheel middle pin should be battery voltage at full volume so about 3V

[@kevinc9264]

@@RetroSix Thank You, now I'll just have to wait for the multimeter to arrive.

[@mundogamersguayaquil2524]

@@RetroSix hello retrosix good afternoon, maybe it would be too much trouble to share the diagram of the Gameboy consoles that you have, I think it will be very useful for us, your followers and the technicians, thanks

[@RetroSix]

@@mundogamersguayaquil2524 they are on RetroSix.wiki website

[@valentinmorenolara7196]

Hello, sorry for my bad English. I wonder if you could help me, I get a game boy advance recently but well I got the same problem, it have no sound at all, so I want to fix it but I don't have the tools like the oscilloscope, so I hear you say you could solder a cable directly, could you tell me where I should solder it, I appreciate your help.

[@sembase1]

conseguiu resolver?

[@fastmaxr]

Darn... those vias are problematic as hell... Thanks for the informative video!

[@michaelball3735]

Awesome explanation and pacing - appreciate it!

[@RetroSix]

Thanks

[@Marcelo-sx1ot]

Hello there! First of all, awesome video mate. This is the most high-quality and thorough gba audio system explanation I've found. I would like to ask you. I switched the volume wheel off my GBA and now the volume doesn't turn fully off, with the volume wheel all the way down you can still hear the sound a little. Do you know what could be the problem?

[@RetroSix]

That's third party wheel that's not the same resistance as original so never turns off

[@Marcelo-sx1ot]

@@RetroSix Yes that may be the issue there. Do you know where I could get a good third party replacement for the volume wheel?

[@RetroSix]

Currently there are none on the market so only from donors

[@Marcelo-sx1ot]

@@RetroSix I removed the wheel completely and I can still hear that quiet sound. Testing voltage on pin 10 I can see I have 0.80 volts, where in your working tests you get around 0.40-0.50 volts. Do you have any idea what could be causing this? :/

[@RetroSix]

Jump on discord.gg/RetroSix will be quicker to diagnose, and send photos of that area of board

[@TheSlackassCrew]

So I have a problem with audio. I get audio to one of my headphones and that's all. No external audio

[@RetroSix]

kzbin.info/www/bejne/g4LRlIqdjdd_i5o checkout this video I go through the audio circuit. If your still struggling just join our discord for more help