Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

I have a 21" iMac model identifier imac5,1 (Late 2006). (It's the one with a 2.16 Ghz Intel Core 2 Duo and a max of 4 GB RAM, 3 GB addressable. You know, the white LCD ones)

Starting this weekend after I cleaned it... probably too aggressively... by vacuuming the exhaust slits and air intakes, it is now making a grinding / whirring noise. I suspect is is the case exhaust fan.

The temperature in the iMac seems okay, but I don't push it very hard so I am not sure if it will eventually fail due to heat. I do know that the noise is very annoying. Either way I would like to solve the problem.

Can the fan in an iMac (Late 2006) be replaced? I'm fairly certain it's not user servicable, however I could try it if it's possible without requiring special tools / training. I'd also be happy to pay to have it replaced but I don't even know if this is a service that's available for a 5 year old machine...

share|improve this question
add comment

1 Answer

I don't know about replacing the fan, but with XRG you can monitor your system's temperatures on screen. smcFanControl lets you tweak your fan speeds; maybe you can use it to dislodge whatever's in there, before you try opening the box.

share|improve this answer
    
I should have mentioned I tried smcFanControl and it seems to have no effect on fan speeds whatsoever... –  Josh Nov 8 '11 at 15:10
    
I have been monitoring the temperature with Temperature Monitor, and the CPU code is ~120°F or ~50°C –  Josh Nov 8 '11 at 15:12
    
60 degC is about the hottest we can touch without getting burned. My (admittedly unproven) rule of thumb is that a device running at less that that isn't in danger from heat. Also, I have an iMac 24" of a similar vintage whose fans don't seem to ever react to increased temperatures. I use smcFanControl to bump them up 500 to 1000 RPM each when I'm playing a flash game. On my machine, the power supply and the GPU diode sensors are always the hottest ones. I picked values that would keep them at or below 60 degC. –  JRobert Nov 8 '11 at 22:14
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.