OK, I have done everything I can think of and my JP still gets into a random firing of solenoids after being turned on for several minutes. It usually starts during a multi-ball and once it starts will remain until the game is shut off. I have updated the code to the latest rev, and gone through all the switches and everything looks fine. I have also examined the wiring near the upper flipper coil stop, and found 2 wires that were frayed and/or broken. Both of these have been fixed, but I still see the issue.

This is a phenomenal game, in great shape, but I can't get it 100% because of this - any help would be greatly appreciated! Dave

Not exactly acting like a ball search, but it is firing only those solenoids that would search for the ball (ball launch, up kickers, etc) but not in the same order as the ball search, more random. Tonight or this weekend I can post a video to show exactly how it looks/sounds when it starts doing it.

Thanks fattrain - I hadn't thought of that. I will inspect more closely when the issue is happening, and see if flashers are not turning on when they should. If that's it, I'll check the relays. I will report back....

OK, the issue is definitely related to these relays. When the random solenoids are firing, the flashers are not going off. I pulled both relay boards and reflowed all the solder joints (one joint looked cold/cracked so I thought I had it nailed). Plugged everything back in, and the game worked great for about 15 minutes. Then the issue started happening again - could this be a problem with one of the actual relays, or should I troubleshoot the wiring further? Are these D.E. relays easy to obtain? Thanks for everyone's help.

Finally got this fixed!!! I had to reflow all the solder on the PPB board - I think I had a cold joint on there somewhere, and as the machine heated up, I lost a connection causing the relay to malfunction. All fixed and working 100%! I'll update later if the issue pops up again... Thanks everyone for your help! Wow JP is a pretty fantastic game when working properly!