Question about Apple MacBook Pro MB991LL/A 13.3-Inch Laptop Notebook
Its very rare a mac has sound problems. Some earphones consume batteries, does yours have batteries in it? and is it powered on while connecting? With the earphones connected, check system volume and increase the sound while playing music. If there is sound coming from the mac itself then there maybe an issue with the AUX connection. Possible dust blocking the port. Clean it and try again. If there is no sound coming from the mac itself while the earphones are connected, then the AUX port is connected to the earphones and is in good working condition. Increase the volume on both devices, the mac and the earphones, if it has this feature. If there is still no sound, there may be a problem with the earphones itself. Possibly bad wires already, connect the earphones to other devices and listen for sound. If still no sound, replace earphones.
Posted on Oct 19, 2013
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Posted on Jan 02, 2017
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