just picked this single player EM up; it's my first one i bought that didn't work; time to dig in. help me out and along if im wrong on some things; i'm learning from scratch-but luckily the game came with an original schematic. originally it did nothing; i quickly went through and saw the 15A fuse was blown, looks like this runs the coils under the playfield and is a 24V system. replacing the fuse and hitting the start button, the game comes to life and starts doing it's resets and lighting up...then 3-5 seconds go by and it blows the fuse. I've put a circuit breaker in the fuses place to help move this along; and right before the blow it has a "buzzing" sound i would describe it as. can't tell where from yet though. almost seemed it was by the kick off switch. this switch has a rod that goes vertically and when it goes up it moves some switches; thinking maybe underneath the coil board is another coil that operates the rod?! anyway if i place some paper between the contacts for this switch, the fuse doesn't blow during it's reset...but there's no lights.
-when the game blows the fuse; i need to MANUALLY with my finger hit the game over relay trip and game relay trip
-when the game dies with paper between the kickoff switch contacts; it doesn't light up during it's reset and i only need to manually reset the game relay trip
-if i manually hit the lock relay with no paper in the kick off switch and a good fuse; the whole thing lights up.
-if i unplug the jones plug on the "coil board"(board under the playfield), and hit the game start button; it does it's reset and all lights up and finishes. no blown fuse and no dead lights (except the playfield).
any suggestions on where to go here? from what I've described and gathered im leaning towards a playfield issue; since with that jones plug unplugged from the coil board, the fuse doesn't blow and the lights stay on when the game start button is pressed.