1. Ensure 'TV Power Control' has been enabled.
Follow the steps in this FAQ to see whether this feature is currently enabled. TV Power Control is enabled by default on the EXA100.
2. Make sure the HDMI cable has been connected to an ARC/eARC HDMI port on your TV
Not all TV HDMI sockets will support ARC/eARC, most TVs will only contain one ARC/eARC socket, or in some cases, two.
3. Make sure all relevant 'CEC' settings have been enabled on your TV
4. Make sure the relevant external sound system is enabled on your TV's settings menu
The above image is an example of a Philips TV running an Android system.
In this case, 'EasyLink' is the name used by Philips to indicate HDMI CEC. If this setting is not 'EasyLink autostart', then the EXA100 or any other HDMI ARC/eARC device will not receive audio.
Similar settings may be found with other brands and models of TVs as well, but with alternative naming.
We would recommend checking the manual of your TV or contacting the manufacturer of your TV for more information on this.
Below are the names of various brands:
- AOC: E-link
- Hitachi: HDMI-CEC
- LG: SimpLink
- Mitsubishi: NetCommand for HDMI
- Onkyo: RIHD (Remote Interactive over HDMI)
- Panasonic: HDAVI Control, EZ-Sync, or VIERA Link
- Philips: EasyLink
- Pioneer: Kuro Link
- Runco International: RuncoLink
- Samsung: Anynet+
- Sharp: Aquos Link
- Sony: BRAVIA Sync
- TCL: Control other devices (CEC)
- Toshiba: CE-Link or Regza Link
- Vizio: CEC
5. Remove any devices connected to another HDMI port on your TV, to see if this has any effect
6. Try a different HDMI cable
7. Ensure the firmware version of your TV is up to date