If your TV is connected via HDMI, for example, your sound is probably being redirected to the TV instead of the headphones or speakers. Other devices could be channeling the sound away from your headphones.
That includes HDMI, Thunderbolt, and USB devices. Some models have built-in volume controls that can be turned down or turned off.
Check the volume controls on your headphones.Plug the headphones back in while holding the volume buttons at the same time.Try blowing the dust off the jack and from inside the port on your Mac to see if that solves the problem. Dust or fluff is enough to block the port from recognizing your headphones or speakers. Unplug your headphones and try connecting them to another device like your iPhone or iPad to make sure they are working as intended.If your headphones or external speakers don’t work when you connect them to your Mac computer, here are some things you should try to fix the issue:
Headphones Not Working on Mac: 13 Things You Can Do Let’s take a look at what to do when your headphones aren’t working on your Mac. Fortunately, there are several solutions you can try to fix this audio bug.