Quoted from aobrien5:
My Cleopatra continues to conspire against me.
After another mysterious transistor death (and burned coil), I learned the Ni-wumpf driver board is supposed to have a ground connector in the corner and that's supposed to be wired to the back panel.
So, I connected that, replace the burned coil and transistor and now when I boot up, I get no coils at all. All of the LED indicators on the driver board light and stay lit. Displays and lighting (including feature lights) work fine.
Email him through his website.
He his quite helpful; helped me and provided replacement parts for a display issue from the V1 board that was not even bought by me but by the previous owner.