Hello everyone,

I’ve had this 1975 Chicago Coin Top Ten in my family for the last 35 years...and now its in my garage. It probably hadn’t been turned on in the last 15 years or so. I’ve restored power and the back glass looks good and I’ve repaired a lot of the top of the playing field, all the lights are working, but now I’m at a standstill. It seems like the CAM motor runs continuously and there’s a buzzing coming from a part on the Coin mechanism. The score reset relay in the back box was going bonkers and knocking around and was arcing but I took care of that so that isn’t it (I don’t think). Now I believe it’s the CAM motor. The third CAM wheel has a contact that is arcing. I’m very new to this and would appreciate any help...pretty please? Below are some photos of the schematic of the CAM motor and this buzzing connection on the Coin mechanism.

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Appreciate the reply. I’ll try and figure out which switch/relay that is keeping the motor running when I get back to it tonight (live on the west coast)

Thanks for the information. I believe the last time this game was up and running the score reset back to zero and then CAM motor went bonkers. I’ll check this out. I also moved one of the score reels to 10 points on player one and it wouldnt reset back to zero. Hmmm...separate issue?