Kings of steel driver board help

mikenes75513

Well-known member
Joined
Oct 20, 2020
Messages
988
Reaction score
584
Location
Grafton, Wisconsin
I have a kings of steel that nearly all the solenoids stopped working. In test mode the knocker works And that is it. The knocker's transistor is the only one measuring 43 v on the collector. In circuit the others measure differently with the diode checker, I haven't measured them removed. The game was working fine, so the question is can the board really fry 15 transistors and leave one good while not ruining anything else on the board? What else should I check?
 
False alarm, found a new fuse in the schematic that is mounted to the underside of the playfield.
That took an embarrassing long time to find.
 
Back
Top Bottom