For example, if you have plugged your Mac into your TV via HDMI, and you are wondering why the speakers plugged into your Mac aren't getting the audio, it's because the sound is being routed to. When you connect a MacBook or whatever other model of Mac to a display with an HDMI or DisplayPort, macOS has the reasonable expectation that you want to control the volume from that external device.
Use the latest version of macOS
The first step is to make sure that you're using the latest version of macOS. Back up your important information and then update the software on your Mac.
Check your sound settings
Hdmi Mac Sound Not Working On Tv
If you still can't hear sound from the internal speakers after updating your computer's software, check your sound settings.
First, disconnect any external audio devices from your computer. Also disconnect any cables from the USB, Thunderbolt, or 3.5mm audio ports.
Hdmi For Mac No Sound Recorder
- From the Apple menu , choose System Preferences.
- Click Sound.
- Click the Output tab, then select the built-in speakers. If you don't see built-in speakers as an option in the Output window, contact Apple Support.
- If the Output volume slider is set low, move the slider to the right and test again.
- If the Mute checkbox is selected, deselect it and test again.
- If you still don't hear any sound, contact Apple Support.