27" LED Cinema Display - no sound at all

Take is back to Apple if it is still in the DOA period

Reset the SMC.

http://support.apple.com/kb/HT3964?viewlocale=en_US

This is becoming a common problem on the new displays.

There is another thread here with several people reporting the problems. Hopefully Apple can fix it soon.

I'm glad it worked, but unfortunately the problem seems to return every couple of days.

The iSight, speakers, and mic will all quit working. But resetting the SMC seems to be a temporary fix until Apple pushes out a firmware/software update.

You should contact Apple every time this occurs so they will have record of the issue and work on a fix.

27" LED Cinema Display - no sound at all

this issue has been discussed at the apple-support-discussions for the last ten days. i became a victim myself yesterday. as i posted there, my CPU is also about to blow out and the fans are spinning themselves to death.
found this:
LED Cinema Display Software Update 1.0 (Topic: TS3520; http://support.apple.com/kb/TS3520?viewlocale=en_US).

not sure if it'll fix the issue, but i just gave it a try.

Thanks for the info on the software update! I'll try it to...earlier today i just posted that i didn't have the sound problem. 15mins ago i had to reset SMC =P, jynxed myself haha.

Hopefully this update will fix it, until then i guess i'll have to deal with it. Luckily resetting SMC only takes like 45seconds with an SSD...

For me the update didn't fix anything. I've tried on several occasions to get the update to work but so far nothing.

I think this will require a firmware update on the display itself. Hopefully Apple is working on this.

No sound - same probleme here

I have the same problem. Brandnew 27'', arrived 2 days ago and suddenly no sound, very unresponsive volume control.
Interestingly iTunes stoppes playing and goes to Pause when I switch from the internal speakers to the USB display speakers.
Resetting the SMC solved the problem.. We'll see for how long.

Same problem again...

2 days later. Same Problem.
Apple tech guys!! Are you reading this?

same problem here

toschlebelge said:

Apple tech guys!! Are you reading this?

Click to expand...

Almost certainly not. You should contact Apple directly.

Software Update for 27''

Cynicalone said:

...I think this will require a firmware update on the display itself. Hopefully Apple is working on this.

Click to expand...

I don't think, there is any software ON the display. It's driver issue, and as resetting the SMC seems to solve it, there will surely be an update... but when?!

I get around this problem by unplugging and replugging the display into a power outlet. Not really a great fix but does the job, Apple need to patch this ASAP

I have this issue on a 24 ACD which has been fine for 6 months. Now USB side of the display fails on the occasions it's happened Youtube video seems to have been the trigger for it to fail.

Still no solution

It was all fine for some time, now the problem is back. I have been in contact with Apple support in Germany, they gave me some logging tool to save the system config.
I returned the log to them and they said they would send it to Cupertino...
I guess as several people seem to have the issue, we just will have to wait...
BTW: Anyone of you also using an Extension for the cable from the Display to the Mac?

Dear All,

For what's worth it. I had the same sound issues. Apple kindly replaces my display with a new one. It seems really a new batch, since the plastic wrapped on the front seems different then the first screen (improved, no glue anymore direct on the glass). The power cord is a bit different as well. Last but not least, when I tried the software update for the 27" LED cinema display I got the message "Your computer doesn't need this update"

No sound issues at all. With the old ones I knew how to trigger it, but with the new one, nothing so far. No sluggish volume bar, and sound immediately when selected as audio output. Maybe I am a bit early with drawing conclusions but it seems solved in the new batch.

My new screen is also (both after calibration) less yellowish, and I like this panel more then the first I had.

I am very happy and thank you very much Apple for your fast and good service. Send my old ACD friday, received the replacement today at monday. Simply amazing!

With kind regards,
Bas

Problem Solved

Hi all!
Apple today released a firmware update
http://support.apple.com/kb/DL1338

I installed it and it solved the issue instantly without a reboot or anything.
If you don't hear from me again it has worked for good!

Tom