Not sure if this info is what you were looking for, but Burnin seems to have got his board to run with zero hardware errors... https://bitcointalk.org/index.php?topic=179769.msg2637343#msg2637343. No idea how long that board was running for though.
I don't understand much of what you're talking about but it's fun following this thread anyway
I don't see mention of what chip he changed or what problem it solved. But it makes me feel better that I'm not the only one having to struggle with problems.I don't understand much of what you're talking about but it's fun following this thread anyway
He replaced one Avalon chip for another, on a fully populated board.