Teenage Mutant Ninja Turtles pcb won't accept coin1
I picked up a 4 player TMNT board in a trade deal, and the player 1 coin input does nothing. I tested the cabinet wiring with a Simpsons board and it's fine. I moved the TMNT board to another jamma cab and P2 coins up fine, but P1 will not coin up.
I pulled the pcb and followed the coin1 trace all the way from the edge connector to the first through hole component, which I believe to be a resistor array? I can't tell since it's one of those black coated chips. I think they call those a resistor array. Anyway, I have continuity all the way from the edge finger to the leg on that chip.
What should be looking at next?
I picked up a 4 player TMNT board in a trade deal, and the player 1 coin input does nothing. I tested the cabinet wiring with a Simpsons board and it's fine. I moved the TMNT board to another jamma cab and P2 coins up fine, but P1 will not coin up.
I pulled the pcb and followed the coin1 trace all the way from the edge connector to the first through hole component, which I believe to be a resistor array? I can't tell since it's one of those black coated chips. I think they call those a resistor array. Anyway, I have continuity all the way from the edge finger to the leg on that chip.
What should be looking at next?

