Hi I have a damaged headphone jack on a MacBook Pro. It causes the computer to think that digital output is on. I have played with the jack and can't get the switch to go back to built-in speakers. Is there a way to bypass the headphone jack completely by soldering a wire? If so, what fuses do I need to solder? Thanks for your help. It's really frustrating to hear a startup chime but not have any speakers in the OS. I have reinstalled, looked for a red light, etc. and think my only option is either a new logic board or to figure out how to bypass the jack.