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April 25, 2009

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Dan Devoe

I have to admit, I was a little disappointed at it being the motherboard on the Mac -- I figured that there was a new version of Conficker out that Susan had somehow given your Windows VM... :-)

The "twinkling" reminds me of a flaw in the IBM T40 series, with the "flex" issue. For those of you not familiar with it, almost every IBM T40 that was made had a motherboard that would eventually fail. It wasn't the motherboard itself, but rather, the solder joints on the video card.

In making the T40 so "slim & light", IBM didn't reinforce the case, allowing the motherboard to "flex" when pressure was put on the case. This would cause the solder joints of the video card to eventually come just loose enough so when the T40 heated up, barely moving it would cause "twinkles" & "gibberish", and would usually require a reboot (which eventually would just give you a BSOD).

I have been successful in repairing several of these motherboards, but have also fried a few others.

(For those of you who are interested, here is a YouTube video on how to "reflow" the motherboard:

http://www.youtube.com/watch?v=vR8L3B3eDr0

Jon, you should ask the Genius bar if this is a common problem, and exactly what caused it to happen. I'd be curious if it is the same issue that the T40 series of laptops had.

Best of luck! :-)

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