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SOLVED: Audio jack problem, no speaker sound, red light ...
https://www.ifixit.com/Answers/View/8797/Audio+jack+problem,+no+speaker+sound,+red+light#:~:text=The%20red%20light%20in%20the%20headphone%20jack%20means,the%20port%20operates%20in%20optical%20or%20analog%20mode.
Red light in headphone jack and no sound … - Apple Community
https://discussions.apple.com/thread/3694502
It may mutilate the red light, but will not fix the audio. This is a common software issue on Mac OS X 10.7.5 and earlier versions. Unfortunately there was not software hotfix ever released. The problem you are experiencing is that the computer does not recognize the "internal speakers" as an active sound component.
Macbook "Red Light" audio fix - YouTube
https://www.youtube.com/watch?v=whzcJYavU4c
SOLVED: Audio connector red light problem. - MacBook …
https://www.ifixit.com/Answers/View/60681/Audio+connector+red+light+problem.
Macbook Audio Fix-- No Speakers; Red Light in the ...
https://www.youtube.com/watch?v=GLG6OS8tz3U
Macbook Pro Red Light/No audio Problem solved. | Mac-Forums
https://www.mac-forums.com/threads/macbook-pro-red-light-no-audio-problem-solved.36726/
Macbook Pro Red Light/No audio Problem solved. Thread starter catchmeifucan24; Start date Jun 21, 2006; C. catchmeifucan24 Guest. Jun 21, 2006 #1 I noticed there were a number of people who were having problems with the digital audio being stuck on which didn't allow the main computer speakers to work.
SOLVED: Audio jack problem, no speaker sound, red light ...
https://www.ifixit.com/Answers/View/8797/Audio+jack+problem,+no+speaker+sound,+red+light
Strange red light from my MacBook Pro – mkaz.blog
https://mkaz.blog/misc/strange-red-light-from-my-macbook-pro/
Grab a Nice and Clean Sharp Toothpick, and find a LIttle dent on 7’oclock position. and push that little dent for a several times, At first it will blink a few times, and keep trying until the red light go off, It took about only 2 minute! also make sure you won’t damage any other port or parts, you have to push the toothpick very gently!
MacBook speakers off, red light coming from the headphone ...
https://apple.stackexchange.com/questions/261282/macbook-speakers-off-red-light-coming-from-the-headphone-jack
The red light is probably because its a Mini-TOSLINK port. There is a metal prong in the jack and sometimes it can be bent , causing the digital audio to be turned on when it shouldn't be. The problem is there is a switch in the jack that tells it if you have a mini headphone plug or an optical plug plugged into the headphone port .
MacBook No sound + Red light | MacRumors Forums
https://forums.macrumors.com/threads/macbook-no-sound-red-light.1023876/
It's the optical audio that has kicked in. Sometimes when plugging in a mini phone plug (headphones) the optical element is triggered when you unplug it. …
Red light in audio jack, no sound! Help! | MacRumors Forums
https://forums.macrumors.com/threads/red-light-in-audio-jack-no-sound-help.573822/
It sounds like it is jammed in optical audio out mode. There's a microswitch that turns the port on and off. Looking into the port, the switch is …
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