[G5] G5 June 2004 dual 2.0 Processor problem

[Eric Volker]

On Sep 25, 2008, at 7:54 PM, Andrew J. Yon III wrote:
> Eric,
>
> First off no offense was taken. Don't worry, I have been informed by  
> Doctor friends of mine , that as we age , that happenings like that  
> will increase more and more as we age.  : )     I, now, feel blessed  
> if I can remember my own name, LOL.
>
> Thank you for the external link to that site. I had not run across  
> that site before. He does mention similar crashes, but due to the  
> keywords, "take apart", I had not seen that page. I have the Apple  
> Service Source Manuals and had not searched for any manuals due to  
> that.  After having seen his photos of the power supply, even tho  
> mine has always lived in a clean lab environment and is immaculately  
> clean, I am resolved to taking this one apart for a better look see.  
> I will update you on what I find.
>
> Yes, I had noticed the temperature reading on the  memory controller  
> and had installed two standard pc type fans to the front of the case  
> in the lower quadrant of the front panel that use an external power  
> source. I noted that all fan RPMS ran at 300 rpms constant, with  
> those two running full time. However the G5 still crashed at random  
> anyway, whether idle or under critical load.
>
> I also tried the fans on the rear of the G5, outside, located over  
> the top of the existing fans. The result was a longer duration  
> between the crashes, but still crashing at random.
>
> I, too, am wanting to know where that heatsink is located.
>
>
> Andy3
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I'm also very curious about the location of that heatsink. I would  
think that something like that would be covered in the Apple Service  
Manuals.

Did you mount the fans on the *inside* or outside of the G5's case?  
I've seen at least one picture of someone mounting an 80mm fan on the  
inside of the case near the memory housing (where I'd presume such a  
heatsink would live.)

I would also suggest that you post your problem and what you've  
learned to the G3-5 list. There are many experts on the list (moreso  
than myself) who might know exactly where that heatsink is. Good luck  
on taking it apart...

Eric