(Topic ID: 204520)

circus mpu problem

By mongi

3 years ago



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    #1 3 years ago

    I recently have a problem with my circus with the original board. When you turn the game on the scores come on like they're supposed to but the Playing Field lights are out. Game takes credits and when you press the credit button to start a game the ball kicks out then the game shuts off, the game over until relays are energized. Game plays fine with my rottendog board in it so I know all the wiring is fine and has all ground mod's. I trace the wiring back to the mpu board and suspected something was bad in the board so I sent the board out for repair. It came back with the same problem. What drives the game over and tilt relays on the mpu board, obviously that's the problem. The gentleman I sent the board to said it was all repaired , can't see what he actually repaired but he did fix my other star race board and two other driver boards for me that work fine. Any ideas thanks

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