Bally Flip Flop Start up seems to be functioning to the point where the Game Over relay is suppose to latch and allow game to begin. I deposit quarter in Coin slot, press Start Button, Credit relay energizes, which then energizes Coin relay, then Reset relay, Score Wheels reset to zero. However, Game Over relay LATCH does not remain energizes so game remains in Game Over mode. Game Over lit on Backglass, game cannot be played. If I manually keep Latch relay energized, Game Over light goes off and game can be played, but will not end game after 5 balls unless I manually De-energize Latch relay.

Additional problem: Deposit quarter in Coin slot, credit registered on Credit Wheel. Press Start Button begins Start up process but does NOT remove credit from Credit Wheel.

Have also discovered when I manually energize the Game Over relay Latch it energizes the Cam 12 relay which stays energized and makes buzzing noise. Is the Cam 12 relay suppose to do that?

I read the start sequence and followed the schematic. Nowhere does it make reference to the Cam 12 relay. I will check #12 Score Motor switches. Also, I tested the relays involved with a DMM and all were good. However, I noticed the Lock coil paper was charred and it tested as a bad coil. It does stay energized but I'm wondering if that has anything to do with it.