You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Museum of the Game® & International Arcade Museum® Forums
So I'm diagnosing my Gyruss cabinet. Both amplifier chips were no good so I swapped them out and re-installed the heatsynchs on top using thermal paste. Unfortunately, the issue persists - it has no sound at all. I'm looking for guidance on where I should check next and how to go about checking whether the next piece is good or bad.
A friend said:
"The game uses two Z80 microprocessors, one 6809 microprocessor, and one 8039 microprocessor. For sound it uses five AY38910 PSGs and a DAC."