So I set out this morning to get this thing working. I removed the connectors and take the board out, no issues. Test the transistor in question with my meter, checks out fine according to specs and matches what the other transistors near it show...WTF?? Check bridge behind it and the resistor behind it and they also check out good, WTF??
Go over to the game and look at the connector and the seating of the wire. Using a paper clip, put it in the end where the pin would go and using my meter touched the clip with one probe and the other probe on the end of the wire in the connector...nothing...no continuity. Pushed and squeezed on the connector, check for continuity again, BAM, got it. Put board back in, put all the connectors back on, turn game on, I hear a pop and it starts smoking (just kidding!)
Put the game in test mode, tested coil 15 and holy crap, it's alive. After all that, it was just a poor seating of the wire in the connector. I spent an hour last night practicing removing transistors from an old stereo receiver board...at least I learned a lot as I had never removed a board before, let alone put an iron to one.
As for game play, this thing rocks! It's active in the pops, but also quite a bit throughout the game, I know for sure its active going through switches on a couple of ramps.
Highly recommend this thing. Install is an hour if you know how to seat a wire in a connector properly...lol.
Offending connector below...
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