Hello, ive been lurking a little bit, found many answers along the way, but now im against the wall, and need some more specific help.
My Tools available:
As of the time of this post:
Visual inspection of all play field wiring to all coils confirmed and verified to be in good condition.
Ohm test of all coils verifies all are in good useable conditions and within spec.
All fuses removed and tested with dmm for continuity
All transistors/predrivers tested on diode setting while board removed from game, found to be within expected specs.
and each transistor tested for continuity to ground from tab to board ground while removed from game, and none are found to be faulty or have shorted.
During game play:
Jet bumpers do not work
Flippers do not work
Kickers do not work
Ball feed, and kickout work
Lock coil for ramp pulses 15 times at power up, during attract mode, and then during game play each time a ball drains.
testing coils returns same results, no jets, kickers, or flippers.
Shorting transistor tab to ground with jumper, pops all the non working solenoids
Please ask specific questions, ( for example dmm, diode mode, Q79 black to center, red to each outer leg = ? & ?)
Walk me through what youd like to know and I will test and respond. I can send / post pics/vid
[Im pretty handy, and pretty good at following instructions.]
Thanks in advance.