I have no sound coming out of my macbook pro and see a red light in the hole of the listener.
I do not have its coming out of my macbook pro os x 10.8.1 but if an earphone is connected I hear the sound and there is a red light through the matter of earphone. What is happening to you can help me?
The red light of the headset jack means the MacBook Pro thinking that an optical audio cable is plugged into the port. Try to have disconnected and reconnected a headphone plug into the port several times. There is a tiny sensor inside the port that determines if the port is operating in analog or optical mode. Something similar by plugging should trigger the sensor and restore the analog signal.
If you don't feel capable in doing so the folks at Apple Genius Bar will be able to help.
Tags: Mac
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