I have run all the factory on-board diagnostics without any errors. There are no errors on the CPU diagnostics. All lights, switches, and solenoids seem to work fine. When I power the game on, it always shows "4" in the credits and "0" in the match area. Toggling it off/on - off/on puts it into Game Over status. Nothing seems broken, but when I add credits and push the "start" button, NOTHING HAPPENS. Power is on, lights are on... it's like the button doesn't work (but I tested it and it does).
What are my next steps? Replace all the ROMS?
What are my next steps? Replace all the ROMS?