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Old Apr 25th, 2009, 08:42 PM   #1
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How to replace liquid cooled PowerMacG5's power supply

I am contemplating buying a PowerMac G5 2.7Ghz with a dead power supply. (Dead power supply diagnosed by a Apple tech. Replace power supply and all will be well, so he says.)

I am reasonably handy, and, if the price is low enough, I am considering buying this machine and replacing the power supply myself.

But, before I do that, I want to ask if the procedure is straight forward. Most importantly, does it involve disassembling the liquid cooling system?

Thanks in advance.

L
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Old Apr 25th, 2009, 08:46 PM   #2
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It's a complicated job. The power supply sits in the bottom of the housing and all components, save for the optical drive, hard drives, and the fan(s) in between the two, come out. That means the processor, all fans, and all parts in between must come out, logic board included. The liquid-cooled processor is one unit, and it does not come apart further. Once it's loosened from the logic board, it gets pulled straight up and out. (Never place the processor pin-down on any surface for any reason.)

I've performed this job countless times and still despise it to this very day.
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Old Apr 26th, 2009, 12:24 AM   #3
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I have not had to do the job Lars describes, but I've assisted other techs doing it, and he's absolutely right: even by Mac Tech Guy standards, it's a BEE-OTCH and not something any sane person wants to get involved in, unless you like scraped knuckles and loads of frustration. That price would have be pretty ridiculously low to tempt me into doing it.
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Old Apr 26th, 2009, 09:35 AM   #4
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Lars, thanks for the info.

Do I need special tools to do this job? I have regular and small slot, philips, hex and torx screwdrivers. Also have a jigsaw, circular saw, spiral saw and chain saw. And can curse in several languages. :-)

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