[Mrmerlin]

I think there is a bad connection in the CE panel,
and possibly has been damaged by CLEANING with the DREMEL.

your computers are probably OK,
BUT if you can get them checked why not ,

inspect the computer connectors while they are off,
its common to find corrosion.

Look at the CE panel along the top if you see rust then the blower box is leaking,
so I would suggest that you verify every fuse is correctly placed and also has the right feel as sometimes the fuses dont get clamped well.

Do the same for the relays, make sure they are clean, any relay that has corroded pins should be opened.
Verify correct PN and position