Check if the multiple play relay pulls in and stays pulled in after the machine has reset to ball 1 ready to plunge the ball in shooter trough.

The hold circuit for the multiple play relay is a normally open switch on the relay and score motor cam 10 switch D normally closed switch.

The delay relay timing circuit must have a 455 flasher bulb inserted for the coil to release properly.

Oops your machine is too early to have the delay relay.

At the end of the game (A) game over relay trip coil will fire. When the switches change state, a normally open switch will close to power on the (B) game over relay. This (B) game over relay will stay energized until the (A) game over relay releases it when the machine resets to a new game. That sounds like normal operation, you might have a noisy relay.

Depending on the manufacturer and age of machine, the bottom kick switch will release the hold circuits of different relays. This machine was probably one of the last Bally’s not to have a on/off toggle switch, but one could added inline with the primary fuse.