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Wednesday 17 January 2018 at 22:49
Quoted from frunch:If you ground the metal tab from the TIP122 transistor that fires the pop bumper, does it fire the bumper? If so, you can rule out the wiring from driver board to coil, the coil itself and the diode on the coil.
Could you clarify what you mean a bit? I just don't want to do the ...
Source: http://pinside.com/pinball/forum/topic/firepower-ii-blowing-solenoid-fuse#post-4181217