Does your new 27" LED Cinema Display buzz?

Well, some development. I thought it was the fan making the sound but I have started to suspect that maybe the case is that the fans "intensity" somehow affects the speakers which amplifies the fan noise. (??) Could that happen? Or maybe it is not the fan at all and the electronics are affecting the speakers. Intresting indeed.

Today I put my ear to the vent on the back of the screen (behind the stand) to listnen to the noise and it came out very loud, even louder than under the screen. So I thought, well it has to be the fan then because that is where it is located. But as I read another post here on the forums from Bleengrass (https://discussions.apple.com/thread/5597577?answerId=23999708022#23999708022) it struck me that it is also where the subwoofer is located. And thus it led me to belive in the theory that it is the speakers I am hearing.

So now I am wondering what could cause this and how to fix it. I will go to the mac service store nearby this afternoon and hear what they have to say. I will report back!

Stay tuned.

Ok, the visit to apple service center helped me not very much as anticipated. Of course they wanted me to carry the display to the store so they could fix it and that would probably cost me around 2000 swedish kronor (about 300USD) so that is out of the question.

BUT!!

I have stumpled upon a very intruiging thread where a guy has uploaded a video of the noise his display is making and it is identical to the noise I am hearing from my display! I was very happy to find this. The solution though seems a bit complicated to me as a novice in electronics but it involves swapping some parts on the power supply board in the display and I am tempted to give it a try.

Check out the thread here:

http://www.badcaps.net/forum/showthread.php?t=23699

Intresting is it not?

I've had the same issue, and the most frustrating thing for me is that Apple's attitude is that this isn't a defect. I'm pretty sure none of us expect a display to make a buzzing noise as a standard part of the specs.

I've had the same also . Noise tzzzzz in my 27'' cinema display . Apple ????? No one have a idea ????????????

I'm in the site of apple no ? Thanks for feedback ...

I have two Apple Cinema Displays (both 20 inch) ... and one of them recently started making this humming noise. As I recently purchased a new 2014 R2-D2 Mac Pro [ which is much quieter than my previous BIG Silver Mac Pro ] ... that may be another reason as to why I have started noticing the hum so much.

Thanks to this thread ... I have managed to isolate the problem to the brightness level: On FULL brightness, there is no hum ... but as you reduce the brightness level, the hum gets louder and varies in intensity.

I tried the same thing on the second monitor and it also hums, but the hum is not as bad/loud as on the first monitor.

Hey woszwoz,

The same here. When I changed my PMG5 in 2010 for a quiet Mac Mini (C2D 2,66GHz) I also found my 20" ACD with the exact same behaviour - mine does the hum-thing like that:

Brightness on 5 (from 16) Points - no hum.

Brightness decreasing from 5 to zero: increasing hum.

Brightness increasing from 5 to 14: increasing hum.

Brightness on 15 and 16: no hum.

I searched the web and didn`t find deeper knowledge about this "feature". Someone wrote it could be the inverter. As far as I found out, it could be a pretty hard thing to repair that with "normal" technical skills.

Conclusion: I still love my display. It cost me round 750 € in 2005 and I planned to work with this one for the next 10-15 Years. It is pretty annoying that I now have to use it on only two or three brightness-positions, otherwise it gets on my nerves...!

Seriously, I wish, Apple would do a repair-program "for us 20-inch-users". So, please, Apple...! :-)

Until then: do the brightness-shuffle - altogether!

Chris

my 3year old 27inch display had the same problem, it started out as a real faint noise, i didn't think about it until the last few weeks when it got really bad,,, i mean really loud, people across a large office could hear it.... then all of a sudden my APC surge protector connected to the monitor tripped and shut off (only monitor and back up G-drive connected) only to find out that it was the end of the screen cause when i plugged it back in it was dead. luckily it didn't damage my hard drive.

i'm out of luck too as warranty ran out.

definitely take the monitor in as soon as the noise by the speakers comes on...

by the way, when the noise got real loud it seemed coming from the middle rear area where the hinge for the base is.