So far, I've replaced:
1) Blown fuse for Upper Right Thumper Bumper solenoid (2A, 125V FB, replaced with good fuse with same specs)
2) Q8 transistor (2N6044, replaced with NTE261)
3) Coil / diode / coil sleeve (coil A007030-01 (from Marco's)), new coil registers 8.8ohms as it should

The switch for the bumper "clicks" and gives the appropriate audio scoring report. The bumper assembly has been put back together correctly.

History:
After transport, I plugged all the boards back in and when I fired up the game, the old Q8 transistor popped and smoked. Pulled Q8 off and it tested bad. Replaced it and the fuse that probably blew somewhere around when the transistor popped. Coil was fried, especially the coil sleeve, and the plunger was stuck halfway down. Replaced coil, cleaned old parts, reassembled. No action at all.

Help and advice appreciated.

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I don't know if this helps but the lamp for the upper right pop bumper is also out. Correct wires attached, new bulb installed - still no light.

I should add that I tried the diagnostic test as well, no dice.

Bump.

Wondering about the messed up through hole where I replaced the transistor...

I don't know what else to look at other than checking the power (checking for broken wires), and I'm not sure how to do that. Anyone?

Welp. One more bump before I go back to work.

Zitt
Thanks for your advice! I started backtracking the circuit in question and I found the problem when I started testing the continuity of Q8. When I replaced Q8, I noticed the through hole was "burnt" looking, but I tested continuity after replacing the 2N6044 with an NTE261 and it was "fine". Well, according to your suggestion, I retested continuity (note that the pinout on 2N6044 is BCE (left to right from the front), which is weird (in my limited transistor experience)) and I was getting OPEN from base to emitter (ground). I'm not sure why it worked before but didn't after reinstalling the board, but seems to be the case. Well, to fix the problem, I did some soldering that you won't be able to unsee, but it is functional for now. There was some sketchy soldering on that old Q8 in the first place, but I am not proud of the "through hole repair" I did either. Upper right pop bumper works with this messy monstrosity. (The lamp is still out, but I think that is one of the Ax logic chips...). Thanks again!

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