Internal Speakers not available in Audio Output

same problem my macbook air 13' output audio no found..... help me what can i do...

Maybe you should check the settings in the Audio MIDI Setup.app

On my computer that application is found in the Applications / Utilities folder

Not really - the diagnosis was correct and your solution worked. Just use the port as usual - as it's not really UNUSUAL for the switch to become 'stuck'.

Just go about your usual workscheme and, should the port become stuck again, you'll know how to fix it!

Clinton

This did not work for me. Any other suggestions?

This is a dust issue in the external audio jack, the first one on the left side of the MacBook. We cut off the tip of a toothpick (to be safe, just cut it in half), gently inserted it as far as it would go, slowly twisted it a few times, and voila! Volume icon came back on in the right part of the upper bar.

Your audio out plug may be stuck in digital out mode. You can USUALLY 'see' if this is the case if a red light is evident in the port. Even if it's not, you may want to plug/unplug a jack from your headphones, etc., to try to reset the switch (some people have also successfully used a toothpick to 'flip the switch').

If that doesn't fix the problem, call back...

Clinton

sound output issue could be 10.8 NOT hardware

In my case

Have already been through dead internal drive, new power supply, top half of screen is dimming.

I have both 10.8.5 and 10.6.8 external boot drives.

I only went to 10.8 because Apple won't accept iPhoto orders from older versions anymore.

iMac 7,1 - 3gb

10.8.5 - itunes 11.1.1

10.6.8 - itunes 11.1.1

I also use Audio Hijack Pro for general sound enhancement and SRS iWow in iTunes

with 2 small Sony SRS-88 powered speakers

Was using 10.8 and all of a sudden sound went flaky. Sound control panel showed it constantly switching back and forth from internal to headphone with the sound actually reversed - i.e. speakers plugged in, played through internal speakers - with no speakers, no sound.

Tried some of the suggestions - zap pram, permissions, audio midi, etc. - no joy.

Rebooted into 10.6.8 and everything works fine.

Rebooted into 10.8.5 and everything works fine so far.

I wonder if Apple has too many ex-Microsoft people doing systems work.

Lightspeed2008

There are several Apple Support strings that point to this same functional problem with audio on Macbooks. Apple should really consolidate this information into one common string.....or even better send out a user bulletin to Macbook users worldwide.

Try plugging your headphones into the Digital I/O port to reset the switch. This will turn it off if it's stuck on and enable your onboard speakers again.

I've been frustrated by this same issue. My onboard speakers stopped working one day, after I had unplugged my external ones from the headphone port. I zapped PRAM and tried plugging in headphones and unplugging them. I checked my sound preferences and saw that my only sound output was listed and "Digital I/O". After reading the forums, I found that it's possible for the audio port switch to get stuck on. So I tried plugging the headphones in and taking them out again. Then I realized it was the Digital I/O port that was stuck on. As soon as I plugged my headphones into the Digital I/O port and took them back out it reset the switch and turned it off. Then my speakers came on as normal. It was actually a very minor hardware glitch, although really frustrating.

Levi

Hope you're still around, Clinton. My wife's MacBook Pro has the same issue, but the switch is not resetting. The light is NOT on in the I/O port. When she plugs in earbuds, she can hear music. When she unplugs them, no sound. I checked the MIDI app, as suggested above. When the earbuds are plugged in, there are numbers in the dB and value fields. When she unplugs them, they disappear, the sliders dither at 0.

Any more suggestions? Thank you!

I tried two days but often also before.

I did not realized that it could be something else than settings; that it could be hardware.

I saw in sound setting that the Digital Out/Optical digital-out port was selected when headphone was unplugged.

I tried with tooth pick, ... Not worked.

I bought a Dry Air Spray. Sprayed inside and immediately Built-in speakers came back in sound setting. So, just a dust issue.

I had the same problem and after trying everything suggested including reseting PRAM, I just plugged headphones in and out several times and then was able to switch the output back to internal speakers.