Currently Being ModeratedDec 5, 2011 8:12 PM (in response to simpson309)
One possible speaker check would be to play some sound both loud and soft through each left/right channel to see if that shows anything that might contribute to the sound.
There is a fan inside these displays. You can see its exhaust vent in the middle back just above the power cord. So the fan may be your noise source.
If this is still under warrantee you might want to let apple look at it or replace the display itself.
Currently Being ModeratedDec 5, 2011 8:14 PM (in response to X423424X)
thanks i'll take a look at the back, it is under warranty though. is it best to just take this big thing in to any apple store?
Currently Being ModeratedDec 5, 2011 8:40 PM (in response to simpson309)
Definitely yes. At $1000 it's not something you want to fool with if the professional support is available for free.
I always save the original boxes and styrofoam, and the monitor's box has a carrying handle, so sticking it in it's original box makes it easier and safer to transport (been there, done that).
Currently Being ModeratedAug 4, 2012 11:41 AM (in response to keshavdv)
not exactly. I dropped the monitor off at apple in Januaray for 5 days and they:
1. Replaced the entire panel with a damaged panel with a few dead pixels and smudge marks.
2. Did not fix the buzzing noise coming from the power supply.
Needless to say I was not too surprised since it's Apple, one day this fall I plan to go back to the store and make sure they repair it right.
Currently Being ModeratedNov 15, 2012 7:00 PM (in response to simpson309)
I have just got the buzzing sound started suddenly this morning after waking the computer from sleep. I am connected to a MacBook Pro 15". Otherwise it is working perfectly, but the buzzing is annoying, and I wonder if it's potentially dangerous, like that it will burst into flames, etc.
Doesn't seem to be a common problem as this is the first referrence I have seen to anyone else having the same issue.
Currently Being ModeratedNov 19, 2012 5:22 PM (in response to tommy41950)
Have sorted my problem out folks - it wasn't the monitor making the noise - it was my Harmon-Kardon Soundsticks. I suspect that a repair to them is probably more expensive than buying some new ones.
Currently Being ModeratedDec 5, 2013 4:05 PM (in response to simpson309)
I have the exact same problem with my 27" LED Cinema Display. Buzzing from the back and also from under the screen. First I suspected the fan but now I am more into the theory that the power supply is the problem, just like you are saying.
Is the sound like the sound in this videon?
In fact I think it is the capacitors on the power supply that are failing/getting old and I plan to replace them as Apple Service most definitly are either going to put a brand new (expensive) power supply in there or replace the wrong part like in your (and many others) case.
What has happened since your last post? Have you found a solution?
Currently Being ModeratedDec 5, 2013 7:34 PM (in response to FCPXLL)
similar noise yes.. but quieter. but to answer your question i never did take the display back again since the noise wasn't too noticable with all the other background noise in my place. but i do plan to take it back for repair shortly before the apple care runs out, which happens to be in february 2014.
Currently Being ModeratedDec 6, 2013 6:43 AM (in response to simpson309)
That's the same noise I was experiencing and it seemed to be correlated to energy consumption (higher brightness = more buzzing). I ended up taking it to Apple and asking them to replace the power supply and haven't heard any buzzing ever since. It cost about $100 to fix it.
Currently Being ModeratedDec 6, 2013 7:42 AM (in response to keshavdv)
Alright! Thats intresting. I will post here again when I have replaced the capcitors and we will see what happens.