[twdawson]

Hi all

Since i upgraded to tiger on my Imac G5 (one before the Isight one) i have noticed that i now have noisy fans. Anyone else seem to have this problem and would going back to 10.3.9 solve it???.
The fans on this drive me up the wall sometimes and my pals Imac (the Isight one ) which he has just bought does not have this problem.

Thanks in advance.

Thomas from the UK

[volcano]

I'm guessing you have a Rev. A model - which would be the first iMac with a G5 in it. I thought you had the same one I do (Rev. B) until you mentioned that you just installed Tiger and replaced 10.3.9. All Rev. B machines come with Tiger pre-installed.

Anyway - back to your problem: Try going into System Preferences > Energy Saver > Options and change the processor performance to either 'Reduced' or 'Automatic' & see if that helps.

How long have you had Tiger installed? It should be noted that your fans may run higher for the first day or so due to the fact that Spotlight (top right-hand corner, searching utility) has to index all your files/folders/documents on your computer. If you haven't had your computer on much since the update, wait a day or two and see if the problem persists.

[twdawson]

I have had tiger installed for months now and the processor performance is set to automatic.
Its a 17" Imac G5 that i bought and it got it about three months before tiger was launced and i even went out and bought another 512 stick of ram because it only come with 256 which has helped a little bit with performance but not with the fans.

My mate went and bought an Isight g5 Imac and his is so quiet compared to mine and i was just wondering if apple has done a fix on the noisy fan issue, on the new ones but i am just guessing.

How much of a drop in performance would setting the processor speed to minimum cause?.

By the way i am new to the mac side of things so be gentle guys.

Thanks
Thomas from the UK.

[Chinasaur]

Welcom TW,

You can read up on other users experiences with noisy fans in their imac's by searching the imac forum. Use words like - noise imac fan - and that will get you started.

Most of the posters at MacNN are nice. The rest you can ignore.. unless you bring it on yourself

Welcome to the Mac side.

[imitchellg5]

My iMac has very noisy fan with Tiger.

[quiklee]

it's a Rev A problem . . . maybe purchase AppleCare just in case?

[[email protected]]

I have had the same problem with the fan in my iMac G5 since installing Tiger. I have had it checked out by a technician, but naturall it followed Murphy's Law and would not replicate the problems I was having. Since then I have come across a great piece of advice in another forum which is to shutdown your computer when the noise is like a 'Jet Plane' then unplug the computer from the power source for 15 to 20 seconds, plug it in again and restarts. Seems to fix the problem, but I agree that it is a problem that should not be there in the first place. I have taken out Applecare just in case. Good Luck

[twdawson]

Thanks for the advice guys. I have not got apple care, but i have service call agreement with a company who specialise in pcs and mac repairs which covers me for all kinds of faults and accidental damage, so i am covered for when it goes pop and bang.
Thinking about switching back to 10.3.9 anyway. I am not knocking tiger in any way but the things that tiger give me over the previous os, i dont really use.

[dreamBweaver]

My PowerBook 12" rev. a had a similar noise problem that began in Tiger. Like MacPoet, AppleCare/Apple wanted me to SHOW the noise and it would inevitably pop its insane head after 2-3 hours of CPU challenges in the Apple Store. I can't deal with this and gave the computer away. Not even previous part replacements including the logic board or an e-mail to Steve Jobs that got attention could solve it.

Frankly, if any iMac is going to do this, particularly the most recent revision (which I hope is cooler but they made the MacBook Pro thinner and it's still hot)...

Screw it, Front Row or not. I really need something in the dorm and right now my new used Cube (fanless) is best qualified. Unliked the iMac, no 20" widescreen LCD

Edit: p.s. I really loved that PowerBook except for the fan. Once I couldn't hear my iTunes and enjoy a quiet sleep my heart was broken. Yes, I'm still disappointed and a bit angry---mostly, that I still can't buy a fanless system new from Apple and that the company markets the iMac as "whisper quiet" so hopefully what we're reading on MacNN forums are the exception.

[twdawson]

To be honest the fan issue is starting to bug me, because my mac is in my bedroom and i now have to turn it off on a night time. This problem is putting me off applying anymore updates and not even sure i will buy any more macs in the future.
Doing a re install of 10.3.9 tonight, that should fill in a few hours putting all the software back on as well as the OS.
I also have a windows based laptop which is sat next to my mac and runs totally silent, which i was going to replace in a year or so with a powerbook or macbook pro, but i dont think that will happen now.
I can put up with OS's not working properly, after all i have been used to windows, but this noisy fan issue is like torture.
When my mate got the isight imac i could not beleive how much of a different computer it is, totally silent compared to mine.

Rant over.

[twdawson]

Back on 10.3.9 and silence is golden. No more noisy fans.

[discotronic]

The iMac fan noise dates back to the first iMac G5. Here is a thread:

http://forums.macnn.com/showthread.p...ight=fan+noise