This is because the CEC controls the ARC aspect that allows for remote control of the devices.ĭisruptions by third-party devices – Third-party apps may cause the HDMI of the TV and the audio system to stop working. HDMI ARC uses 5.1 audio while older model TVs support 2.0 audio.ĭisabled Consumer Electronic Control (CEC) – If your CEC settings are turned off then your ARC will not be working. If your TV ARC is not working it is maybe because your TV model was made before 2009.
This means that TVs produced in 2008 and older models do not support HDMI ARC.
Incompatibility – The HDMI ARC technology was released in 2009.
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