Aya have replied... Default turn it off and on again reply lol
I'm going to write a fresh bios to a fresh bios chip, fresh firmware to the 128k firmware chip and see what she does... I suspect the unit has multiple 1.8v rails and they used that flex to bridge the rails... Potentially putting too much onto the remaining 1.8v I'll need to measure if that rail is actually generating that 1.8v that feeds the bios chip.. or just wait for Aya and ship it back again.
I guess the question is, should you pay big money for a board that is basically bodged? It's a repair sure, they found a missing rail and fixed it. The question is, I guess, is that a proper fix?