1974DQ - have you tried manually moving the score motor back to start position? That may do it - has for me on a couple of occasions.
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1974DQ - have you tried manually moving the score motor back to start position? That may do it - has for me on a couple of occasions.
Agreed with pinhead52. DQ - you have the schematic right? If not, I can post the relevant section.
There are 3 switches that have to be closed: Anti-Cheat, Shut Off and Bounce - plus of course the 7.5A (pre-transfomer) and the 10A (post transformer, pre 115V relay) fuses must be good (but you checked those).
For Credit button to activate the Start Relay (which inturn gives power to transfomer) then yes, zero position switch on credit wheel must be closed (i.e. credits on wheel), plus Score Motor 1C closed, plus a normally closed switch on Extra Chute relay must be closed, and "on-ball release" normally closed switch also closed.
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