The ground mods are already done, I haven't done anything with the edge connectors though. They look to be in good shape though.
I've checked the voltages and they checked out good.
No ball in trough when I'm working on it, but there is when I try to start a game.
I was probing the boards a couple of days ago and when I go to start a game, everything freezes. It's like you just pressed a pause button, everything just hangs. Sometimes you'll get one of the game sounds when it happens. Sometimes it's silent.
I decided to just fix the coil not working in tests just to get SOMETHING fixed on it. For sol. 2 it's on pin 13 with it's sol.gnd on pin 10. The schematic shows the gnd and power going straight to the solenoid but when I do a continuity check the sol.gnd isn't showing continuity. It's acting like it's going through a capacitor or something... but again, that's not shown on the schematics. And since the person that owns the rights to Gottlieb's stuff won't let that stuff be shared, I'm not 100% sure I've got the full set of schematics (ran across some online).
Would GPE's sys80 test board be of ANY help with something like this? Because I'm literally at my wits' end with this machine.
Quoted from frunch:
Have you replaced the many edge connectors going to the boards? Does the game have ground mods done? Those are 2 things *every* system 80 game needs done sooner or later.
Have you checked voltage at the test points on the power supply board?