For what it is worth, I have managed to repair two of these so far, both the with the problem of only booting while pushing on or around the processor socket. I found that when not pushed on, the board lost the core voltage (1.4 V to the processor). This is controlled by a Maxim chip on the bottom of the board by the power input jack. Looking at the leads of this chip under a binocular scope, I could see several connections with hairline fractures at the chip. The Maxim chip is a core voltage control chip, and is unusually high off the boardwith very soft solder connections. The repair consisted of very carefully (under the scope with a very sharp tip iron) reflowing the solder connections that looked cracked. Both boards have been working perfectly since.