I have a Time Warp (Williams Sys 6) giving me sound trouble. The sound only works half of the time, when I power on the game. When the sound does come on, all sounds are perfect. I actually know when the sound is not going to work because as soon as I power the game on, I will hear static and several beep-bop-boop sounds. Then nothing.
Adjusting the cab pot increases and decreases hum (so I assume the amp is fine). I have replaced the sound pcb sockets for IC1 and IC2. IC3 is soldered. My voltages (+5v, -12v, and +12v) are spot on whether the sound is working or not. I reflowed all of the header pins and tried reseating the connectors during gameplay, but there is no change.
Any help is greatly appreciated.