Intel iMac fans always on!

[MattMatt]

Hey there, go my brand new iMac (20" Intel, late '06) couple of weeks back and all was well and good until one day i switched it on and the fans came on and ever since (about 10 days) they kick in and stay on throughout its usage!

I've searched the net for a solution but not luck, ive tried resetting the SMC (which is basically turning it on and back off, yeah thanks Apple) but still no luck, i hope theres not something wrong with the temperature monitor.

Can anyone help me!?

Thanks in advance

 

[Jasonbot]

Mine are always on. But they are hardly audible. Only at night when all sound is isolated, even typing, can I hear them.

 

[MattMatt]

Mine are always on. But they are hardly audible. Only at night when all sound is isolated, even typing, can I hear them.

they're on,but not on full like when you hold the power button in on start-up but just louder than usual and really annoying, basically it used to be near silent now its very audible.

 

[Jasonbot]

they're on,but not on full like when you hold the power button in on start-up but just louder than usual and really annoying, basically it used to be near silent now its very audible.

That could be a problem... You mean they're on max? Really loud? Or just slightly louder than usual. ALso take into account what processes you are running @ the time.

 

[MattMatt]

That could be a problem... You mean they're on max? Really loud? Or just slightly louder than usual. ALso take into account what processes you are running @ the time.

Well they're comming on everytime i switch on, and theres no processes happening.... im getting a reading of 127 Degrees centigrade on my Graphics Processor Diode, is that normal?!

 

[MattMatt]

Right i ran a Hardware Test and got this error code:

4sNs/1/40000000 :TmOP

Im guessing somethings wrong, i called apple and they wern't helpful and said just take it to your nearest apple store, which i will do!

 

[jimbama]

I have the same computer as you, purchased around the same time. I've had the same problem (fans always running), but the computer has been fine othwewise. I brought it to the Apple Store and they told me they would take a look, but I would lose the computer for 5-7 days. I declined, which in retrospect may have been stupid since I lugged the whole damn thing down there, but like I said, everything else works fine...

Anyway, please be sure to report your results here. Good luck!

 

[volk]

I am experiencing the same problem...nothing with the smc has helped. Please let us know what happens with your machine.

 

[J.Bell]

I have the same problem with my 20” iMac, the noise can be annoying. I installed Fan Control and lowered the fans speed down to 1,000 rpm, make the noise a little less annoying.