HERE it is!! My Bally JACKPOT ONLY machine.

[shortrackskater]

Nothing connected to the beau plugs on the back, just air!

Gary or Alan:
How does the reel board configuration work? Could the #1 or #3 board be causing the #2 to have all the lights on? Alan you gave me two working boards - should I try swapping the #1 and #3?

[Amechanic]

You could try switching 1 & 2 around. But I believe your problem lays with the IO or MPU. It might be time to let Alan put them on his Tester.

[Badbaud]

I agree, if the boards work on my tester then you can be assured it is in your wiring.

[shortrackskater]

Just to close out this thread...
Alan checked and repaired all my broken PC boards. I re-installed and still have issues. We've determined it's the wiring. To be honest, this has been, by far, the most difficult machine to work on for me. I think half the problem is that I'm horrible with tracing wiring issues and there's a lot here. I have one more area to check, removing the small board next to the hopper plug to check, where Alan told me to look at a delay relay.
If this isn't the issue I'm going to mothball the machine and just drive it out to K-LAR! I need a vacation anyway and I actually enjoy driving out to the desert, once I get over the Cajon pass of course.   

[Badbaud]

I'll leave the porch light on.

[shortrackskater]

Just another update here. I did end up sending all my boards to Alan at KLAR. He repaired/tested, and sent them back. Unfortunately I still had the same issue with those reel-reader board resistors heating up. So I'm guessing it's a wiring issue and maybe a mistake I made in repairing it. 
The machine sat covered in my garage until about a number of weeks ago when I sold it to Joe, NLG member slcjeeper.
I think he's quite capable of getting this great machine up and running and hoping he'll add to this thread so we can all see where I screwed up!