iMac cpu fan running at 4400RPM after 20 minutes of use?
My iMac G5 (Powermac8,1) cpu fan is running at 4400RPM after 20 minutes of use. It doesn't matter what I am doing.
I have zapped the pram, blew out the iMac with compressed air and have reset the power management unit.
Could the cpu need to have a new layer of thermal paste applied?
System Fan 1240 RPM
CPU Fan 4400 RPM
Hard Drive Fan 1800 RPM
HD 50º Celsius
CPU 62º Celsius
Hard Drive 47º Celsius
Please help this fan noise is too loud to work on the computer.