i just recently acquired a not working Bally Lost world. i have been able to get it booted up and running, but I currently have no sound. not even a humm. the sound board is a AS-2518-32. I do not know if board is good, so it could be anything at this point. (game does boot and play without sound)

I have tried turning volume knob, but no change. I have also been trying to find wires linked to A8 in the schematics, but am obviously missing something because i dont see any :/

any hints as to where to start?

thanks in advance.
-barry.

Yeah test points on sound board got correct values.

just an update. I reflowed header pins, and re-pinned connectors on sound board. still no sound.

I have ordered a sound board capacitor kit, and also new U10 and U9 amp chips and sockets. hoping that replacing those parts will get the sound working

Well I got sound! I had ordered parts from multiple places so installed them as they arrived. Two days ago I replaced the volume and sustain pots and U9 and U10. Sound still did not work. Then yesterday I replaced the capacitors and sound now works

Thank you all for the advice.
-barry