sound problem

Hey y'all, first time poster and new retro candy cab hobbyist here. I recently acquired a used Net City cab and some arcade boards, purchased separately. I've had pretty good luck with my CPS2 Super Turbo board and my MVS but my coveted Darksoft 3rd Strike board has some graphical and sound...

Hi everyone ! I have a problem with my Blast City, My left speaker and the sound potentiometer dosen't work. I thought it was a capkit problem so yesterday I've made the entier PSU + Sound amp capkit. Yesterday night after the capkit, still no sound on the left (tested both on mono and stereo)...

I have an original R-Type LEO board that I recently plugged in, and found that it has a sound problem. First, a description of the problem, then a list of the things I've tried. I'd appreciate any clues or suggestions. The Problem Initially, the sound of launching the bits, running out of...