M95D wrote on Today, 10:12:

Hi. […]
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Hi.

I need help. My old sound card died.
It's a no-name OPL3SA3 with Yamaha YMF719E-S. The card is detected, FM works, but wave playback isn't working. When I try to play something in DOS, the game freezes. In Windows, it doesn't freeze, but the player is "stuck" at the beginning. The playback timer and cursor do not move.

Do you think it's repairable?
I did soldering before, replacing caps or other minor repair (on other boards, not this one), but I'm unable to diagnose the problem. I see no obvious problems such as bad caps or burn marks. I was thinking that maybe the oscillator died? I have an oscilloscope but it doesn't go that high.

Thanks.

Post pictures in high quality for the pros to assess.
The more the better.

What equipment do you have? Oscilloscope, multimeter, soldering station...?

It only lets me attach 5 pics. I'll make another post if you need more.

I have a multimeter, TS100 soldering iron, a hot air soldering station (but not much experience using it), 20MHz USB oscilloscope and a QDI KinetiZ 7E motherboard in which to test it.

M95D wrote on Today, 12:31:

It only lets me attach 5 pics. I'll make another post if you need more.

I have a multimeter, TS100 soldering iron, a hot air soldering station (but not much experience using it), 20MHz USB oscilloscope and a QDI KinetiZ 7E motherboard in which to test it.

Card:
https://theretroweb.com/expansioncards/s/labw … a10-ide-power-a
Yours is without IDE.

If you have time, watch Bits und bolts and Necroware.
Also others did some repairs on audio cards, but they are the ones popping into my mind.
https://www.youtube.com/watch?v=djzKYeofQ08

It could help pinpoint your issue, maybe it's a dead cap...
I'm no good with audio cards but some people here are at designer level knowledgeable.

Edit: reinstalling drivers, if both is DOS and Win isn't promising.
Maybe it's a resistance gone bad, that's quick to check.

Let's hope it's an easy fix. Good luck!