Dying A1200?

[mongo]

UPDATE: I got the spare motherboard, and... I found the culprit. The 3.1 roms! The new motherboard had 3.0 roms and booted, but when I switched the 3.1 roms from the old one, it didn't work at all. The old one worked fine when I installed the 3.0 roms. So, both boards work with the 3.0 roms, but neither work with the 3.1's. I already ordered new 3.1 roms so all should be well soon

Weird though, I would've never thought that the rom chips could fault like that. Has anyone ever encountered something like this?

I've had a ROM chip go bad on me before.