So background. Game worked 100% one night and the next had no sound but still worked 100% without it.
Swapped sound/CPU boards with a another and confirmed the board was the issue. Sent it away, just got it back today, sound works great but it wont kick a ball to start. I've checked the connections 10x, they are all good. I've checked all the fuses, they are good. There is the required 4 balls in the game and if I manually start a ball it plays normally as it should until I drain.
Any advise would be appreciated.