I have lost audio from my MBA internal speakers and output jack. In system preferences/audio: 'no audio output found' and the mute box is checked but greyed out. There is no red light in the output jack.
MacBook Air, OS X Mavericks (10.9.5)
Go step by step and test.
1. Reset PRAM. http://support.apple.com/kb/PH14222
2. Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for: "Resetting SMC on portables with a battery you should not remove on your own".
3. Applications > Utilities > Audio MIDI Setup
Audio Devices window
Side Bar
Click the Built-in Output.
Make sure that no box is checked under “Mute”.
4. Hold the option key down and click the speaker icon in the menu bar.
Select "Internal Speakers" from the dropdown.
Go step by step and test.
1. Reset PRAM. http://support.apple.com/kb/PH14222
2. Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for: "Resetting SMC on portables with a battery you should not remove on your own".
3. Applications > Utilities > Audio MIDI Setup
Audio Devices window
Side Bar
Click the Built-in Output.
Make sure that no box is checked under “Mute”.
4. Hold the option key down and click the speaker icon in the menu bar.
Select "Internal Speakers" from the dropdown.
Thanks Dominc23,
I got as far as the Audio Devices window. I have no devices to choose from. There is no Built-in Output. Do you have any suggestions for this scenario?
Many thanks
Click in the menu bar.
About This Mac > Overview.. > System Report > Hardware > Audio > Built-in Output
Does it show Built-in Output?
Hi,
Thanks for your help, this is what I have:
no audio output found, no red light. Mute box is checked and greyed out
