No internal or external sound from speakers on iMac (mid 2011)

Question

No internal or external sound from speakers on iMac (mid 2011)

After plugging in external speakers that failed, my iMac (mid 2011) will not output any sound through internal or external speakers. I am currently in a country with no authorized Apple service centers. Any ideas about what I can do to test and diagnose?

I have checked all the usual places for sound being on mute as well as in Systems Prefrences\Sound. Thanks in advance for any input/ideas. It may be a while before I can get it serviced by a professional, if need be.

iMac (27-inch Mid 2011)

Posted on Mar 17, 2013 4:00 PM

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Answer 1

Mar 18, 2013 5:03 AM in response to JuliannaAmanda

Have you tried resetting your PRAM?

Turn off your iMac and on restart hold down the Command + R and the Option + P keys. You will hopefully hear the start up sound and continue to hold till you hear the second start up sound. Release the keys and let it continue to start and then check your sound.

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Answer 2

Mar 21, 2013 1:12 AM in response to trouble me

No luck resetting my PRAM. No noise on startup and no change once restarted.

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Answer 3

Mar 21, 2013 1:26 AM in response to JuliannaAmanda

It's possible that the failed speakers damaged your sound hardware.

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Answer 4

Mar 21, 2013 2:03 AM in response to tucker.wayne

I've just backed up my iMac. Should I try reinstalling my OS? I have been able to connect to a speaker through bluetooth and have gotten sound output.

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Answer 5

Mar 21, 2013 2:04 AM in response to JuliannaAmanda

Also there is no red light in my headphone jack and I have tried putting a line in and out several times.

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Answer 6

ssls6

Level 4

2,879 points

Mar 21, 2013 5:40 AM in response to JuliannaAmanda

Two things:

1) shutdown, unplug, wait 30s, replug, wait 15s, reboot

2) system preferences, sounds, output....make sure that internal speakers are selected and the volume is set

This should help

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Answer 7

Mar 21, 2013 6:10 AM in response to JuliannaAmanda

Open Audio MIDI Setup and select the Audio Devices window. Select Built-In Output from the list on the left.

Make sure the format is 44100 HZ and 2ch 24bit if the settings are not that set them that way and try your audio.

Also in your frst post you menttioned speakers that failed. How did they fail? Were they pluged in when they failed?

Message was edited by: Frank Caggiano

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Answer 8

Milimont

Level 1

12 points

Jun 15, 2017 2:01 PM in response to trouble me

Worked perfectly. Thank you.

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