Just when I thought I was out of the woods with my methhouse Genesis project. Got it all finished up, moved it into the house, and I’m having intermittent music problems. Usually the music starts OK on plunge, cuts out, comes back in, switches to wrong music, maybe touch on the robot reveal music for good measure and then cuts out completely. It’s pretty random with some weird pulsing added in sometimes. The LED on the sound board always flashes (no solid red or unlit LED). All sound effects work at all times. Game plays 100%. I’ve done all the ground mods (boards and cabinet a la Todd Tuckey), repinned connectors, Chris repaired the MPU, new driver board, cabinet capacitor replaced, all fuses OK. I have two power supplies, one with a new pot, one with the original, both putting out steady 5 v, but the music problem is the same with both. Reseated all connectors as well as the sound roms.
I found some similar problems with 80b on pinside but the problems seemed to go away with ground mods. Where should I look next? Could one of the roms be corrupt?