I am working on a Segasa Monaco that is working great except for one issue. When you attempt to add a player it resets instead of adding the second player. It's as if you had started playing as one player but then pushed the credit button. If I manually step up the coin unit to player 2 or 3 it does the same thing. Any thoughts?

Coin unit reset coil is not energized continuously. With the coin unit in any position, pressing the credit button initiates a game reset, during which the coin reset coil fires once.

Thanks

Thanks Rolf. I just rechecked the game over relay. All contacts are good. The game over relay is tripping then latching during the process. If I hold the game over relay in place and press the credit button the game adds a player as it should.

Aha, found it! It was the ball count unit zero position switch! Game on!