Apple TV: HDMI audio no longer working

Resolution

There can be a number of reasons why HDMI audio has stopped working. Switching devices using AV receivers, HDMI switches, using HDMI splitters, or removing an HDMI cable and plugging it back in when all the devices in use are powered on may cause Apple TV's audio output to stop. To correct this condition, you can try the following:

Note that if one of these steps brings the audio back, you don't need to continue with the other steps.

• Change the TV's input selection to something other than HDMI (component, for example) and then switch back.
• If the unit in question is an AV receiver or HDMI switch, change the selection to something else and then back to Apple TV's setting.
• Unplug the HDMI cable from Apple TV, wait 10 seconds, then plug it back in.
• Unplug the power cable from Apple TV, wait 10 seconds, then plug it back in.
• Unplug the power cable from the TV, wait 10 seconds, then plug it back in.
• Power off all HDMI devices and power them back on in the following order: TV, AV receiver, then Apple TV.
• Using the Apple remote, press both Menu and Menu down/scroll (-) for about 6 seconds to reset Apple TV. After the Apple TV is finished rebooting, select Restart from the Recovery menu.