On Feb 14, 2012, at 7:17 AM, Cameron Kaiser wrote:

>> After the failed attempt of waking the Mac when I try to boot I get a
>> White and red light then click and off again no fans, so I unplug it
>> for about 3 minutes plug back in and it boots normally.
> 
> This is a hardware problem, either the power supply or logic board (my bet
> is the logic board).

A professor here had similar problems, it turned out to be a failing power 
brick for his 23" Apple display, which had pass-through FW and USB. 

 Kind of annoying we dragged the beast all the  way across campus (our 
bookstore is an official Apple repair depot) only to have it start perfectly 
when it got there. Then fail again, the moment I set it up back in his 
office...:-/

He ended up going through two more power supplies until he made Apple give him 
one for the 30" display, which has a much higher wattage, no problems since.

Obviously if you don't have an Apple display, this won't apply....

-- 
Bruce Johnson

"Wherever you go, there you are" B. Banzai,  PhD

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