438      iPhone_iPad_Mac_apple

iMac speakers not working: icon greyed out

Hi, my iMac's speakers have been somehow blocked from usage. The icon has been greyed out. here's what I have observed:

1. I cannot use iMac built in speakers.

2. I cannot use any external speakers connected via an aux cable.

3. If I bluetooth to an external speaker, no issues.

4. Connecting via Apple TV to external speakers work.

Accessing SOUND via SYSTEM PREF leads nowhere. Only speaker choice I have is Apple TV.

I tried upgrading to the next OS. Didn't help. Currently I am using Sierra 10.12.6.

On youtube, there are a few suggestions: Cabling an aux cable and Alt-clicking to choose speakers. Does not work as my only choice continues to be Apple TV.

Help!

最後更新：2017-09-25 11:00:12

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