Optical Audio out stuck on on a MacBook

I've used toothpicks or half of a Q-Tip - really, anything non-metallic that will fit - to do a counter-clockwise sweep of the inside of the opening with success. I've seen various reports as to where the switch may be; I typically just sweep until it's fixed. If you have iTunes open and playing or the Sound PreferencePane of System Preferences up you'll be able to tell when you've hit the switch.

I'm going to share my last-resort solution. You may no longer be able to use headphones, but you will get your speakers back.

I've tested this on a 15-inch Macbook Pro 2012 (non-retina). It may or may not work on other models. The Macbook Pro I tested this on was stuck on optical audio after the jack was damaged removing a broken connector.

The solution is to create a short-circuit between these two pins on the logic board (at the right of this image):

How you do this is up to you. I was successful using a small piece of wire and some electrical tape as a short-term solution, and eventually ended up soldering it in.

Do not attempt soldering on your logic board if you do not have experience soldering small electronics. Make sure no other components are shorted. You risk causing even more damage.

Do not hold me responsible if you destroy your logic board.