Hi folks. Trying to help fix an issue with an EBDLE. Issue is the solenoids all die shortly after booting. This can be as quickly as 30 seconds or last as long as most of a 5 ball game. All original boards. MPU is really clean and has a lithium coin cell mod on it. Guy has owned this game for 10 years and got it that way, so someone was thinking ahead back then. Tested the rectifier voltages and all are present before and after the issue presents itself. I was expecting the 43 volts to be gone or low when they died, but that was not the case. Next time I'm able to, I plan to take a spare MPU and SDB over there and swap in one at a time, but any ideas what to look for next? Oh, I also plan to check connectors as well.

Excellent. Yes, even the flippers die, so I believe you pinpointed where to check next. I was planning on modding his SDB with that jumper but haven't yet. I plan to be more prepared on the next trip there. I'll run those tests. If swapping in my modded SDB fixes it, I figure replacing his caps (since it will be out of the game) and doing the mods should fix it, based on your help.