Internal Speaker Stops Working After Unplugging Headphones On A MacBook Pro


Have  you ever unplugged your headphones, and the internal speaker does not work, and it is simply greyed out?  You will also see a red light coming out of the headphone jack.



Use a toothpick and wiggle it in the headphone jack hole.  You can also insert and remove the headphones a few times and the internal speaker should kick on.



Sees to be a sensor gets stuck that turns on the Optical Input inside the headphone jack.