Looking for some thoughts on this issue:
Friend has a roller disco. We have a stock MPU, LISY1 mpu, rotten dog driver, gulf psu and rebuilt stock psu. Game was working for months. Then we moved the game to his house, few months later he says the game stopped working. I go find a coil locked on, outhole. I take the game home.
Both MPU's do this: game starts up, all looks fine. I press start, and the outhole coil locks on.
I put a new diode on the coil, new transistor on the driver board. same problem.
I used a dmm and logic probe and found the mpu was sending the coil signal constantly once the button was pushed. Figured a pascal all in one board would fix the issue, so we kind of just left it at a stand still.
Well the other day I needed to test my Joker Poker, so I took his boards (both), put them into my game, SAME problem. The outhole locks once you press start.
I repinned the entire interconnect harness, same thing.
So the issue is following those two boards to multiple games, but only the mpu's.
Would there be a way, that the board could be damaged from Roller Disco's initial failure? LIke if the coil diode was bad, the driver transistor was bad, and it wrecked logic on both mpu's (they were swapped back and forth before replacing transistors/diode)? This just seems super weird that a newer LISY1 would display the same issue an original board did.
I've updated the LISY1 software, verified the coil, the outhole switch, the wiring color. Joker Poker had all the connectors repinned. IMO it is something on those two MPU's BUT I am totally open to thoughts and tests I can try to fix this.