Quoted from seeburg220:a Captain Fantastic and it has started to trip the game over relay
Something also.
1 ] Check the Lock relay ( bad coil / armature spring )and/or its contacts , when its activated they should be open.
If they touch it will activate the game over trip interlock.
2 ] Check the game over interlock function / contacts with machine unplugged manually.
Contact cleaning or adjustment for all mentioned might be in order.....