[X-HW] G5 fans at full throttle

[Cyril Blanc]

On 3/26/04 3:45 PM, "Jim Robertson" <jamesrob at sonic.net> wrote:

> I've unpacked the dual 1.8 GHz G5 about which I wrote the other day for
> setup advice, booted it, and found that the fans would not throttle back
> from near maximum velocity. The thing blows the hair on my leg straight! If
> it had wheels and wings it might move towards liftoff.
> 
> It came with 10.3.0 installed. My first action was to run Software Update
> until it had no more things to install other than the irrelevant update for
> old iPods; i.e., I ran the combined update to 10.3.3 and the firmware
> update, among others. The fan was still louder than any Dual G4 "mirrored
> doors" machine I've ever heard. I'm in a cool room and the fans make my bare
> feet COLD!
> 
> I called 1-800-SOS-APPL. They had me reset parameter ram, then boot into
> open firmware and type
> 
> reset-nvram<return>
> 
> And
> 
> Reset-all<return>
> 
> 
> No help.
> 
> So, they've given me a case number and asked me to take it to an Apple
> service provider, saying that a fan might need to be replaced. I can vouch
> that the fans themselves are VERY healthy. They actually throttle back some
> if I open the case and lower the clear plastic airflow shield. And, when I
> boot, the fans throttle back to a tolerable speed and noise briefly for a
> few seconds before the first image appears on the screen, so they are
> capable of responding to control signals.
> 
> Any guesses what might be wrong? I'll report back once my service provider
> makes a diagnosis.
> 
> Jim Robertson
Did you open your Mac and did not put back the transparent plastic ?
If not your heat censor is down !


Best regards
 
Cyril Blanc
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