27" Cinema Display - no sound

Question

27" Cinema Display - no sound

A couple days a go, by 27" Cinema (2011) stopped working. Screen went black. It's plugged into a 2013 macbook pro retina.

I did an SMC reset on teh macbook and the screen eventially came back.

But now the speakers don't work. This has happened a couple times... Is there a comon reset for the montor?

Note: I have a thoery that the Thunderbolt port in the macbook might need replacing, BUT the monitor failed in both ports on the laptop. I think the likelyhood of two ports failing is low.

What I want to do is see if I can isolate everythign but port failure BEFORE I drive for 2hrs to get to an apple store with a 27" monitor.

Many thanks!

LED Cinema Display (27-inch), OS X Mountain Lion (10.8.5)

Posted on Oct 10, 2013 12:15 PM

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Answer 1

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Redpoint Design Author

Level 1

8 points

Oct 10, 2013 1:49 PM in response to Redpoint Design

Ok. So after checking through the control panels in System Preferences... My sound output changed mysteriously to "internal speakers"

Once I re-set it ot the Displayport it works fine.

Oddly, the balance also shifter to full-left only.

WEIRD. But all fixed...?

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