Hi, So I recently found this Williams Big Deal pinball at an Estate Sale listed as not working, Never owned a pinball before, always wanted one but could not afford to buy one, but at the price they were asking it was a steal so I figured why not.....
Anyway I Replaced the 15a fuse and amazingly just about everything works except the 4 aces unless i manually move the 115v solenoid on the underside of the play field with the bar that pushes the 4 ace relays plus a couple of others down then the aces relays lock down and it works as I think it should.
Where can I get a schematic?
Anyone got an idea why this solenoid is not activating, it constantly reads about 10v AC. I should add I am an electrical engineer so with the schematic it shouldn't be too hard to fathom out unless someone has already solved a similar issue.
Thanks

OK guys thanks, coin relay is easy, I guess the score motor is in the back of the scoreboard? not by the game now......
Thanks

Hey Guys, I am still alive!!
So I checked I was getting 120v out of 4C on the score motor - okay
Checked I was getting 120v out the B contacts on the coin relay - okay
Watched my meter closely on the Relay bank solenoid and sure enough a momentary 120v pulse but not activating the solenoid....
Scratch head...Inspected the solenoid terminals closely and found on the underside one of the coil winding wires had snapped.
Quick dab of solder and bingo it works..........
You guys rock and saved me many hours I am sure
Thanks and Best wishes for 2018.