RyanLang said:
I ran a hardware test and that's when one of the fans went bananas. Thing scared the crap out of me as it not only was louder than my old powermac but it was a bit louder than a dust buster!
That's normal. If you read the technotes on the iMac G5, you'll see that the fans are managed by a system that constantly measures the temperature of several internal components and sends signals to a management system that advising on what speed to run the fans at.
This is all handled by Mac OS X. As a failsafe though, if the fan management system does not get a signal from Mac OS X in a certain time (every 10 secs) it will increment the speed of the fans upwards, until they reach maximum speed.
The hardware test CD does NOT provide this signal to the fan management system, and as a result when you boot into the hardware test, the fans will speed up steadily from quiet as a mouse to #@$@ loud. This is, however, nothing to be worried about and you can ignore it. Under Mac OS X, the system will be quieter than almost any other computer you'll ever find.
This also explains why the fans are running flat out whenever you drop into Mac OS 9 software.
As for the discolouration, its most likely due to an LCD panel that was incorrectly fitted at the factory. It may come good once re-seated, or may require the LCD replaced. Either way, it should be completed entirely under warranty.