MacBook Pro sound stops once the connection when plugged headphones

On my MacBook Pro, when I connected my jack 3.5 mm (headphones or speakers) and I switched off, the sound stops once I have connection, once again. The speaker icon is gray and I have to remove and reinsert the connector to get her back. Can you help me, please? Thank you.

Check your settings in the Audio Midi application located in the Utilities folder.

http://support.Apple.com/kb/TS1574 Troubleshooting for any audio speakers on Macs


Trick/Tip: Open GarageBand if installed then, open a program (optional).

Quit out of the app from GarageBand.

=====================

Repair Mac mysteriously mute

The background on the issue, is that there is a switch small sensor inside the plug headphones. When you insert a headphone jack, the sensor includes what is what and changes the setting of audio output for headphones. If you insert a jack for digital audio output, the unit switches to digital output. When you completely remove the plug, it should read the internal speakers.

The spirits tell me that there is a very good chance that you recently had something hostage in this port, a set of headphones or a cable leading to powered speakers, for example. When you remove the plug, something in the port have prevented triggering sensor properly. That's why you see Digital Out instead of the internal speakers.

The solution is to force the sensor to do its job. The safest way to do this is to simply run a plug in and out of the port, a few times. A large part of the time, this takes care of the problem by triggering sensor correctly. If this does not work, there may be dirt in the port. Before moving on to more invasive techniques, get a can of compressed air, plug the small tube which corresponds to the nozzle and the breath to air a few shots in the lane. With a little luck, should dislodge dirt and the port will operate as it should.

If this does not work, find a swab to foam tip that fits (electronics stores generally carry), dip it in rubbing alcohol and insert gently into the helmet in an attempt to wipe any tenacious dirt. I recommend foam rather than cotton fleece because the variety of cotton could leave the son behind. (This same technique works well with the bad conduct of ports from headphone output on devices such as iOS devices).

It is possible that dirt has nothing to do with it. On the contrary, it may be that the switch should just a subtle help. If a socket or a buffer does not work, I have heard people resetting successfully with a deft poke with a toothpick.

http://www.Macworld.com/article/2031146/repairing-the-mysteriously-muted-Mac.htm l

Tags: Notebooks

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