No displays, CDU, APU won't start

[mwcorder]

I do have lights on the overhead panel. When I connect the GPU everything sounds normal- but none of the displays light up.

I also noticed the Nav Lights switch will not stay on.

Checked the Study/Electrical network and it seems normal.  No popped breakers.

Tried a re-install, reboots, etc. Tried a different airframe, tried non-persistent mode.

Worked normally yesterday after I flew in, parked and shut down.

I'm stumped

 

Log.txt