Double check the wiring... if you have a logic probe, put it on the pin where the signal comes into the board. If the light changes when you coin it up then you have a board problem.
Double check the wiring... if you have a logic probe, put it on the pin where the signal comes into the board. If the light changes when you coin it up then you have a board problem.
If it is a board problem, check the 74LS367 IC at location 6B using a probe on the main middle board which has the edge connector. That IC controls inputs for COIN1/2 and P1/P2.