Chosen Solution
Anyone have a circuit diagram info for this model that shows where the audio splits between the headphone and the MacBook speakers. I have audio from the headphones but not from the speakers. The switching works from the headphone socket. System preferences-switches from headphone to MacBook speakers when removing headphones from socket. This fault did occur after a spillage. Have cleaned all of the logic board but a little smoke did show at the time of the spillage. All other functions are working perfectly
Could be bad headphone jack. Normally speaker is connected when headphone plug removed but if jack is bad, it may not be reconnecting internal speaker.
