I haven't had a problem with my (early) dual 2Ghz PM.  The power supply on an early
dual G5 XServe at my previous job died while the machine was off and in storage.  Worked
while in my office, then didn't work when next powered on.  I did point them at the motherboard
battery as a possible culprit (an early PowerMac I had refused to boot when the MB battery died),
but IT was convinced that the power supply failed.
Bad part of that was that it would have been cheaper to get a used G5 XServe off of Ebay than
order a replacement power supply.....

-Rob

----- Original Message -----
From: "Warren Nagourney" <warren@phys...>
To: "Discussion List for Yellow Dog Linux User Topics" <yellowdog-general@list...>
Sent: Monday, December 8, 2008 5:15:55 PM GMT -05:00 US/Canada Eastern
Subject: Re: [ydl-gen] YDL 6 on a ibook G4 800 Mhz

My failure occurred on a 1.8 GHz single processor (which uses air  
cooling). If one searches the net, there are a huge number of very  
scary stories about power supplies failing on many of the air cooled  
G5s, sometimes in a very violent fashion (sounding like a rifle shot  
and disrupting entire offices).  Mine might have been loud (I wasn't  
home when it happened), but the smell was awful and stayed in the  
room for a very long time; also there was black charing all over the  
machine and power supply. Replacing the supply wasn't as easy as it  
could have been, from my experience with other Apple products (it fit  
very awkwardly in the box).

cheers,

Warren Nagourney

On Dec 8, 2008, at 2:08 PM, furio ercolessi wrote:

> On Mon, Dec 08, 2008 at 04:40:23PM -0500, Christopher Murtagh wrote:
>>
>>  As to Warren's concerns with Apple G5 power supplies, I haven't  
>> had the same
>> experience - my G5 hasn't had any serious issues.
>
> These failures may be related with the widely discussed 'G5 coolant  
> leaks'
> issue (searching for these words returns lots of pages).
>
> It apparently affected only 2.5 and 2.7 GHz PowerMacs, the only ones
> with liquid cooling
> [ http://www.fusina.net/G5_coolant_leaks/index.php?lg=uk ].
>
> I feel very lucky to have bought a dual 2.3 GHz.
>
> furio
>
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