Hello Everyone,
First of all, we are pinball newbies. We bought a 1964 Williams San Francisco from a pinball collector who had too many pins to revive and this was one of several he let go that was in need of work.
The game sort of works. It turns on, it tries to start and it sort of scores, but there are obviously some mechanical issues that we are sorting out.
All fuses are good, no burning smells
We do have a schematic, and we can solder.
Things we have done so far: Cleaned all the switches and tested all the coils with a multimeter, cleaned the replay stepper unit, it was totally gummed up and wouldn't move at all. Cleaned the ball count and advance stepper units. All the stepper units will move if I activate the solenoids by hand.
The first problem I'd like help with:
(This has been happening from before we started working on it), is that the advance unit solenoid A-23-600 stays open, so it tries to advance, but doesn't release for the cog to actually be moved. It will stay like this until the unit is powered down. Further - (and I think this is because the solenoid on the advance stepper is staying open) the replay unit is trying to advance instead of the advance unit.
I suspect that I may have re-assembled the replay unit incorrectly. Here is a picture of it with the replay wheel in the zero position. Where should those two posts be in relation to the switch leafs? I've been trying to find a picture of this, but can't find the exact same unit.
I can also see on the schematic that the Replay Stepper Unit appears to say underneath "Open at 1B R.P". I'm not sure what that is referring to, or if I'm reading it incorrectly, so I'm not sure exactly what I'm supposed to check to see if it's open.
I appreciate any help anyone can offer.
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