Gottlieb system 80 black hole up kicker from lower playfield to main playfield doesnt work.
Things i have tried so far.
replaced under play field mounted transistor, coil, and driver board transistor q15,manually ground transistor q15 tab does nothing. fuse is good
I need this information
can some one please verify q15 is the lower playfield to main playfield upkicker transistor.
Next step?
i am thinking possible the diode on the coil has a dead short but would that cause lock on or blow fuse?
if i ground under playfield mounted transistor body it should test wiring and coil/ fire right?
I was working before...
b4 this it was working but locked on during a bad power up, and fried coil.
8-5-11
Update. Cut leg off one side of diode, now coil can manually fire with under pf mounted transistor. So diode was def bad, no surprise there.But still not fire by grounding tab on driver board.
If the shorted diode across the terminals fried the under pf mount transistor, that would match my symptoms. Will have to continue later at work for rest of day. Comments suggestions?
Things i have tried so far.
replaced under play field mounted transistor, coil, and driver board transistor q15,manually ground transistor q15 tab does nothing. fuse is good
I need this information
can some one please verify q15 is the lower playfield to main playfield upkicker transistor.
Next step?
i am thinking possible the diode on the coil has a dead short but would that cause lock on or blow fuse?
if i ground under playfield mounted transistor body it should test wiring and coil/ fire right?
I was working before...
b4 this it was working but locked on during a bad power up, and fried coil.
8-5-11
Update. Cut leg off one side of diode, now coil can manually fire with under pf mounted transistor. So diode was def bad, no surprise there.But still not fire by grounding tab on driver board.
If the shorted diode across the terminals fried the under pf mount transistor, that would match my symptoms. Will have to continue later at work for rest of day. Comments suggestions?
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