I'm having a few issues with bringing my Bally Kings of Steel back to life. Upon startup, 2 thumper bumpers are firing and not releasing which is blowing the playfield fuse. I've replaced the transistors to both on the solenoid driver (one had blown up, and only upon replacement did it cause the 2nd bumper to pull in) but the constant voltage remains to the solenoids. Also, the drop targets aren't resetting. They flick slightly at the start of a game, and oddly when the ball goes into the saucer right before it ejects the ball, but do not pop up as they should. I've replaced all the playfield coils, but the saucer is the only thing to come back to life. I'm wondering if I'm not having an MPU fault causing the thumper bumper problem, but not sure about the rest.
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