Volume won't work - infrared light coming out of Headphone jack

I was using my headphones for a bit on my MBP and now that I took them out of the MBP, I noticed I can't adjust volume. Actually I cant hear anything. I can see infrared coming out of jack. Whats going on here?

Hi NittanyAgent,
Inside the audio output socket on the MacBook Pro (and MacBook) there is a small microswitch which is enabled when you insert the headphone jack. Of course, when you remove the jack it's meant to deactivate thus allowing you to use the internal speakers again. It appears that, in your case, it's stuck in the active position which is why you are seeing the red L.E.D. light shining through.
Try inserting and removing the headphone jack a few times. Others have also had success by, carefully, using a paperclip or toothpick.
If the above fails you may have to visit your local Apple Store or independent Apple Authorised Service Provider.
Kryten

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My macbook pro is stuck on mute and there is no light coming from the headphone jack. any ideas?

my macbook pro is stuck on mute and there is no light coming from the headphone jack. any ideas?

Try a PRAM reset:
http://support.apple.com/kb/HT1379
Ciao.

Internal speakers suddenly will not unmute. My headphones work, and there is a red light coming from the headphone jack

I put my volume on mute a few weeks ago, and I don't know if I have used it again since then or not, but now the volume will not unmute. There is a red light glowing out of the headphone jack. Sound through headphones works. I've tried updating and restarting my computer. Help?

No, not forceful - gentle.
A PRAM-reset might also help:
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Immediately press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.Continue holding the keys down until the computer restarts, and you hear the startup sound for the second time.
Try this a few times.
Stefan

Red light shining out of Headphone jack

What does it mean if a red light is signing out of your headphone jack? I think this can't be good.

The optical digital output has tripped on in the absence of the cable. There was a thread here before - do a search for red light.
One answer here
Go to Control Panel > SigmaTell Audio > click on the 3rd tab. On the bottom there is SPDIF, uncheck the "Enable Digital Output" voila!
http://discussions.apple.com/thread.jspa?messageID=2076875&#2076875

I have been experiencing a red light coming out the audio jack and no audio coming out of my Mid 2009 13.3" Macbook pro. I was wondering if Applecare would cover whatever this is?. I am covered until september 2012. Thanks

Can anyone help?

It should be covered. Contact Apple support
<http://www.apple.com/support/contact/>
for options available to you, or take your Mac to an Apple Authorized Service Provider.

Only one channel of audio is coming out of headphone jack

Very frustrating have tried many things, resetting pram, shuting down computer and unplugging and the paperclip thing. Weird part is my audio interface has the same problem through its headphone jack

Come on... It's just like a usb turntable, only a little better quality. What steps would you use to troubleshoot one of those?

Output speakers do not work, have a red light coming out of my headph. jack

My headphone jack works but theres a red light coming out of my headphone jack when its unplugged and my internal speakers will not work...anybody have an idea? Tried system preferences and says no options for selected audio and cant get any sound for my built in output speakers and my volume display in my bar is faded....HELP!

@Spencer
I know this thread was marked answered but thought I should chime in since my MBP (2.66Ghz Late '08, bought May '09) started to exhibit this behavior. I was getting "No Output" greyed out speaker images and the red light coming out from the headphone jack. It's been intermittent but finally wouldn't go away so I figured I'd contact Appe.
This afternoon I called Applecare and was advised to take it to the Apple store... no questions asked, no troubleshooting steps, just told me to take it to the store and even offered to make me an appt. I was able to get an appointment at the genius bar same day (literally 2 hours after I hung up the phone). My wife took a ride with me and we headed down there.
When I showed the technician she tested it and then went to the back room to double check something. When she came back she told me that it was hardware related and needed to be sent in for service. I am under warranty so it was no skin off my back but I will need to be without the machine for a few days.
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Good luck!

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My volume won't work on my Macbook Pro. The button works and I can see the volume being turned up/down, but no sound comes out! I tried everything in the volume section of System Preferences. Does anybody know what I can do? Thanks!

Try a PRAM reset:
If no success, look in the audio output port. If there is a red light, the internal switch is stuck. Insert the headphione jack a few times and see if that will trip the switch.
Ciao.

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Launchd - RunAtLoad won't work if I log out and back in

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My daughtrts ipad 2 only recognises headphones. and the internal speaker will not work. we have reset the system three times, cleaned out the headphone jack, and chrckrd the side switch above the volume. alos we ensured it was not in do not disturb mode

On our ipad the speaker has quit working. Sound is only heard when you have head phones plugged in. We have reset the system three times cleaned out the headphone jack. Changed languages and rest but nothing works. This ipad is important to our daughter it is her tool to communicate with us and now it is not working please help

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Red light coming from the headphone port

does anybody know why there is a red light coming from the headphone port.
This is after i reformatted
Thanks
Moderator note; subject edited for relevancy

This is perfectly normal. You can run an optical digital out this way. You need a mini-toslink adapter like this:
http://en.wikipedia.org/wiki/Mini-TOSLINK
Then you can set the digital out as default (instead of Speakers) to run audio to a surround sound reciever via optical fiber.

Can barely hear out of headphone jack

About a month ago, I went to listen to my music through my headphone jack and could barely hear it. I checked the volume and it was all the way up. I also replaced the headphones and nothing improved. I also use my iPod in my car and am able to plug it into the car via the USB and that seems to work just fine. It is obviously out of the 90 day warranty period, and I don't know what to do.

The hardware warranty is one year. The free telephone support is 90 days.
- Try cleaning out/blowing out the headphone jack. Try inserting/removing the plug a dozen times or so.
Try the following to rule out a software problem
- Reset the iPod. Nothing will be lost
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup
- Restore to factory settings/new iPod.
- Make an appointment at the Genius Bar of an Apple store. Seems you have a bad headphone jack.
Apple Retail Store - Genius Bar
Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.
Apple - iPod Repair price
A third-party place like the following will replace the jack for less. Google for more.
iPhone Repair, Service & Parts: iPod Touch, iPad, MacBook Pro Screens
Replace the jack yourself
iPod Touch Repair – iFixit

Volume won't work - infrared light coming out of Headphone jack

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