Got it! Just needed to tack it back down on each end with some solder. Hopefully this helps someone with a non-working display.
Plug it in and press around on the various boards... if you're lucky you'll find the one that is loose when the power returns. Careful as those boards will heat up quickly and will be hot to your fingers.
As I said, i've got 2 boards now, both were loose at that top "430" plate.
(No idea what they are called or how they work...lol)
Cheers!