I recently replaced a transistor for my RBION lower right flipper that was stuck ON.
After that my flippers were responding off & on, so I sand papered the contacts as I was told and it fixed it for some days. Temp Fix.
I re-soldered all the connections to the flipper coils, but it is still fluttering/not holding/not flipping off and on....it's a real sh!t storm.
I don't work on a lot of Sterns so I would appreciate some help. GRATIS