iMac Intel 27". EMC 2309 (Late 2009, Core 2 Duo 3.06 or 3.33 GHz), EMC 2374 (Late 2009, Core i5 2.66 GHz or Core i7 2.8 GHz)

338 Questions View all

background noise of constant frequency

Since new (early this year) my iMac 27 iCore7 makes a constant noise in the background (not linked to disk activity).

It sounds a bit like a noisy power transformer, or could be a fan revving noisy, but with continuous speed. iStat doesn't show anything special in terms of temperatures or fan speeds and when these vary the noise isn't changing.

Noise vanishes when I put my Mac on sleep and resumes when I wake it up.

Anyone else experiencing this ?

Thanks for advice.

Answered! View the answer I have this problem too

Is this a good question?

Score 0
Add a comment

4 Answers

Chosen Solution

Record the noise and save it. Then email it to Apple along with your request for a FedEX shipping box. Apple is obligated to service your machine while under warranty and pay for the shipping.

Was this answer helpful?

Score 1
Add a comment

As it's still under warranty i'd take it back to the shop.

Was this answer helpful?

Score 0

Comments:

As my shop is the AppleStore and I'm not living close to any large town I'm just trying to find out whether I'm too "noise sensitive" or if it's a genuine issue, before sending back my machine to the Applestore.

It's difficult to let the AppleCare guys hear my noise through phone lines...

Thanks for the advice, anyway.

by

Add a comment

http://forums.macrumors.com/showthread.p...

Seems like this problem.

I have it myself and is pursuing a fix myself, so if anyone got a fix for it, please share

Was this answer helpful?

Score 0
Add a comment

I got mine fixed, well, the workshop changed the led backlight board, but same problem. Still high pitch whine between 30-90% brightness.

Its been on workshop 2nd time, and they said they have contacted apple and got the answer: Thats just how this model is... i mean, come on...

so, sending it to repair most likely wont fix the problem :-S

Was this answer helpful?

Score 0
Add a comment

Add your answer

Jacques Lacroute will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 8

Past 30 Days: 21

All Time: 1,792