The PowerMac G5 is a desktop computer first produced in 2003 by the Apple Corporation. This guide will review the repair process of an Apple PowerMac G5 model number A1047 EMC 2061 from 2004. It was discontinued in 2006 as part of the Intel switch first to developers then consumers.

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My powermac 1.8 single processor- intermittent FAN NOISE

I bought this first generation computer and it failed after 2 years 9 months. Fortunately I had a warranty and they replaced "everything" 1 month before warranty expired.

There were 2 issues:

First: a loud fan noise - it would race,then stop.

Second: it would not start up proper and kept crashing.

After Apple replaced the logic board, it still started up crashing. So they replaced the motherboard and several other parts.

After replacements - smooth sailing for 4 years.

Now I am getting the intermittent fan noise again. Not sure which fan. Any suggestions? Wonder if this is the preview to crashing again....

Answered! View the answer I have this problem too

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I would run the Apple Hardware Test to determine what part may be failing. Usually on the system disk boot into the system disk by holding down the option key and selecting the AHT from the option list. Ralph

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I think its pressing D when you start up to run diagnostics...

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Yes that is a easier way to do it--thanks Ralph

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After 4 years it may need to be cleaned with some compressed air. These machines produce a lot of heat, (at least mine does) and I have to clean it out every six months. We get a lot of dust in West Texas. The main fans have a handle built into them and they just slide out. +

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Wow it sounds like you just have a lot of back luck when it comes to this computer eh? Its like its cursed!!

Anyway, intermittent fan noise most likely means that some component of the Power Mac is getting very hot, so the fan needs to blow harder(TWSS) to cool down the hardware that is too hot.

To see if this is the case, I would recommend checking the temperature of the computer by using iStat Pro or iStat Nano. (Click to download)

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tom will be eternally grateful.
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