Question about Apple PowerBook G4 Mac Notebook

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Overheating PowerBook G4 17" 1.67Ghz

My PowerBook seems to operate normally with normal operating temperatures except for the following: Five times i have left my PowerBook for approx 4 hours only to return and find it very hot to the touch. (160 degrees F). One time the PB was in sleep mode and the other it times was shut down. Sometimes the lid was closed, sometimes open. It sits on a wood desk top plugged into the Apple power supply, a powered USB 6 port hub, and an Apple 23" flat panel display. I have a DSL modem connected via Apple Airport but the modem is switched off at the times of the overheating problems. There is adequate ventelation room all around the PB, and nothing is on top of it. The ambient room temperature is between 50 and 65 degrees F. The problems have occured between the end of March 2007 and the first of June 2007, so the overheating is not happening each time i leave the PB, only some times. I have reset the PB Power Management Unit as listed on Apple's web site. (tech article 14449) Any suggestions will be greatly appreciated.

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For my pb I have changed the energy saver options to minimal, this prevents the overheating.
The overheating is due to the memory used by the applications in use. -----------> in my experience!

Posted on Apr 13, 2008

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If you have AppleCare and your PB is less than 3 yrs old, take it in- that seems abnormal. It's really strange that your PB was heating up while it was shut down. THat indicated that there is s/thing wrong with the shutdown mechanism. Make sure the machine is hsut down before closing the lid. Let it rest a minute.

Posted on Jun 30, 2007

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