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iMac Volume Control Greyed Out

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dmw16

Diamond Member
I have a 27" i5 iMac and I've noticed recently that my volume control is greyed out. I can't adjust the volume with the slider or the keyboard and the speaker icon (and the screen notifications are greyed out).

When I plug in headphones they work fine, but when I remove them the icon reverts back to grey.

Any ideas?

EDIT: Plugging in headphones then removing them seems to fix it if I leave the headphones in for a little bit first.
 
dmw16 said:
I have a 27" i5 iMac and I've noticed recently that my volume control is greyed out. I can't adjust the volume with the slider or the keyboard and the speaker icon (and the screen notifications are greyed out).

When I plug in headphones they work fine, but when I remove them the icon reverts back to grey.

Any ideas?

EDIT: Plugging in headphones then removing them seems to fix it if I leave the headphones in for a little bit first.
Click to expand...

If you have time, please create another user account and see if the same thing happens.

If it does, you might have a hardware issue. Just like was previously mentioned, the iMac more than likely thinks something is plugged into headphone jack and you plugging and unplugging a set of headphones fixes it temporarily. Did you have an Apple Store close by?
 
Would it thinking I have something else plugged in cause it totally grey out the controls as opposed to just not causing the iMac internal speakers to put out audio?

I have an Apple store fairly close by but lugging my 27" iMac in is a fairly big task. Plus it isn't s problem I've yet been able to consistently replicate.
 
One more bizarre question, is there a red light that is coming on inside of the audio jack? (Optical Out possibly turning itself on.)
 
Adramalech said:
One more bizarre question, is there a red light that is coming on inside of the audio jack? (Optical Out possibly turning itself on.)
Click to expand...

Funny you say that because I swore I saw a red light coming out of jack but didn't think much of it. Now it isn't there, but the audio is also working.
 
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