Temperature Control Issue on a Power Mac G5

Hello everybody,
I have a Power Mac G5 Dual-Core 2,3 GHz (Late 2005) bought in April 2006. A couple of weeks ago I decided to clean the dust accumulated inside 4 years so I proceeded to disassembly the system, removing almost everything (motherboard, processor, superdrive, hard disk, power supply, etc). After reassembling it I did a "Thermal Calibration" using an Apple Service Diagnostic disc (ver. 2.6.3), the only indication I didn't follow was that the room temperature was 29ºC instead of 25ºC or less. The system works perfectly but for some days I've noticed that the processor's temperature is too high (up to 70ºC) and the fans don't help (they are always at the minimum RPM with slight variations, below 600 RPM, totally inaudible). Before performing the cleaning, with the same room temperature, the processor didn't go above 60ºC because the fans rose its RPM's whenever the processor reached that temperature.
Any ideas? Thanks.

the only indication I didn't follow was that the room temperature was 29ºC instead of 25ºC or less.
You identified a possible cause of the temperature difference.
Calibrations of any kind use a baseline. In a thermal calibration, an ambient temperature baseline is used, transmitted via the ambient temperature sensor in the G5.
Since proper ambient temperature is necessary to proper calibration, one may assume that as the cause of your current temperature variance.
The only way to be sure, is to re-calibrate the machine with ambient temperatures in the correct range.

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    Hey Tom, I tried the Patchburn but I couldn't get it to work since the DVD drive that I am using wasn't on the list. Just to let you know, I am running OS X 10.2.8 with 640 MB Ram and a 350 MHz processor. Any ideas? I want to keep from going to an authorized technician or Apple Store, but if that is what I have to do then I will do it.

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