I recently acquired a Bride of Pinbot and aside from it killing the capacitors on the flipper switches, its been a blast to play.
Not long after I set the Bride up and started playing it, the left flipper stuck in the up position. I saw that the capacitors on both flipper switches had burn marks and the cap on the left switch was actually broken.
I went ahead and put in two new switches (the old ones had clearly been in there a long time) and put new capacitors on them also. Now a few days later, the left flipper is stuck up again. And the capacitor on that left flipper switch has burn marks on it again. The right switch/capacitor looks and works fine.
This capacitor is a .1UF 500V disc. I know some capacitors are directional, but I didn't see any markings to indicate that these had to be oriented a certain way. Could I have just put this one on backwards to cause it to fail prematurely? Or could there be something else causing the cap to burn?