OP

Quoted from nipper2u:

I picked this JD up after being routed for a few years. Recently F116 (12v) started blowing some-what randomly. While I was told replacing the power driver board wouldn't necessarily fix this issue, when there was a site-wide sale on Black Friday I thought I would go ahead and replace the original power driver board since some of the other boards have already been replaced with Rottendog boards.

Switch test shows "L" and "UL" for Left flipper and "R" and "UR" for Right flipper. I am not that familiar with the tests, but I was not able to get any other tests to fire solenoids or flippers. This is similar to an issue I had when I first brought it home and there was an unnecessary wire plugged into "J136". I have checked and double-checked the plugs and all seems to check out currently, at least with how the original board was plugged up.

Nothing else but another pin plugged into the circuit. Both were working fine until I changed the driver board and now JD is failing. Good idea - I will contact Rottendog tomorrow.

This powerboard had all new fuses so I didn't bother to check or replace them. When F116 blew in the past the ColorDMD went out and the solenoids went off, and that isn't happening - just weak flippers. How do I identify other high power fuses so I can see if they have been blown? Is it just F115?
Thank you all for your responses.