I tested the B/C board on a working A board and it was good, so the issues are definitely on the A board. It boots with heavy graphic issues. Will play a game, sound works.
I hit it with some flux and hot air with no change the other day. I'll give it another go, can't hurt anything. I'm afraid the PPU is shot though on this one. Seems a common failure and this one has as bad of graphics glitching as I've seen.