Cleaned the contacts on the score reset relays?
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Check the last few pages of the manual, find the contact for your specific reel and make sure it's clean and making contact properly: https://www.ipdb.org/files/1072/Williams_1976_Grand_Prix_Manual.pdf
Does the game start without the reel being reset or do you need to put it to zero before the game will start?
Quoted from nocreditdot:Thanks guys.. it was actually a cold solder joint where the wire attached to the switch. I cleaned all the contacts until found that. Feeling my way through my first EM project. Good news is cosmetically I will have a nice grand prix.
Very common on williams. Always give em a tug!
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