I have a friend of mine that is having me work on his pinball machine down in his basement. It is a williams Toledo pinball. The game was working just fine and then all of a sudden the machine would not recognize the ball drain. I checked the switch and it looks good. I put the game in game over manually and tried to start a new game and the replay button does not work either. I just wondered if anyone might have a idea what might cause the machine not to recognize ball drain and also not let you start a game if you put it in game over. Thanks

Yes I do have the schematics. Problem is there has been coffee spilled on it at some time. They are readable but its hard in places. I did hit the reset relay and it started resetting the machine. Nothing with the replay button and if ball drains if you are in game mode.

No if ball drains it does nothing. Ball just sets there.

Yeah that's the thing I am not with the machine. It is at his house so I am trying to get all the ideas I can so I can check a bunch of stuff when I go back over there. I could try to post certain parts of the schematic if I needed to. Thanks