Chosen Solution
If anyone know the resitance area of “Memory Heat Sink Sensor” in a Power Mac G5 / Dual 2,5GHz i would be glad. or have a technical spec - of the same sensor. The background is that fan speed turning up and down, and MHS show temp in 67-80 ° C. I have also noticed that fan speed gets up when a graphic moment by the Bluetoth mouse going on, Is there any experience in that problem here - about if/how mouse affect the fan speed? - and solution of the problem?
Have you tried running a memory hardware test, like Memtest OS X from http://www.memtestosx.org Try running it for a while to see if there’s a hardware failure. As for the bluetooth mouse, use activity monitor to see which process is hogging the CPU when your mouse is being turned on. You may want to remove the mouse from bluetooth preference pane, and add the mouse again to see if that helps.
