Slowly working through many startup and reset issues on my Bally Circus. This latest issue has me stumped. On startup all but 4 score reels reset to 0 as designed. The 10, 100, and 1000 reels for the 2nd player as well as the 100 reel for the 4th player remain stationary. If I move all those to 0, the score motor stops as it should.

The schematic shows all four of these reels are energized through the score reset relay #2. The score motor and score reset relays keep firing as the reels never move to zero.

Score reset relay switches were cleaned, wires checked, and all the switches change state as they should. Any other suggestions by for something else to check?

Thanks for looking.

SCM switch 11B checks out fine. Both score reset relays fire as they should. It’s just that 4 of the score reels will not move. The fact that all 4 are energized by reset switch 2 might just be coincidence, I don’t know. But logic seems to favor score reset #2 as the common failure point. Just don’t know how to analyze the switch.

I will do all the recommended steps above, and post the results. Thanks for all the suggestions. This is such a great forum; thanks!

I have solved my current issue. On a general check of everything in the backbox, I discovered the coil in the 100 pt. relay was loose. So I tightened the coil, cleaned and adjusted the switches again as long as I was in there. Done and done. Don’tknow why some of the 100 point score reels worked and some didn’t but I’m not complaining.

Thanks for all your suggestions and feedback. Now onto the outhole and ball kicker issues!