When you remove the jack completely, it should read Internal Speakers. If you insert a jack for digital audio output, the device changes to Digital Out. When you insert a headphone jack, the sensor understands what's what and changes the sound output setting to Headphones. The background on the issue is that there’s a small sensor switch inside the headphone port. Trick/Tip: Open up GarageBand if installed then, open a program (optional). Troubleshooting issues with no audio from built-in speakers on Macs You may have already tried some of the suggestions in the following:Ĭheck your settings in the Audio Midi app which is located in the Utilities folder.
