I started a post about this problem I'm having with a buddy's Fireball Classic showing a stuck switch, I've isolated it to the Playfield but I'm pretty stumped on what to do next and hoped maybe one of you hard-core 2518 folks have seen something similar and can give me a nudge in the right direction.
Quick summation - stuck switch goes away if I unplugged J2 and if I simulate switches at J2 with a diode everything works as it should. I ohmed out the two lines going to the stuck switch and even with the switch completely disconnected it still shows as stuck. Any chance the PIA is actually the culprit even though my testing shows the problem to be on the playfield?
https://pinside.com/pinball/forum/topic/stuck-switch-that-isn-t-bally-fireball-classic
Fort Myers, FL
Toronto, ON
