HDMI ARC/eARC Not Working? Let's Troubleshoot! - AV Access

With the ARC and eARC features, a single HDMI connection on the TV can be used both as the HDMI input and the audio output to the soundbar or a surround sound

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OREI HDMI (eARC & ARC) to RCA L/R Analog Audio Converter With 3.5mm Jack Support Headphone/Speaker Outputs - HDMI ARC to Analog Audio Converter. : Industrial & Scientific

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HDMI ARC and CEC not working? Try these fixes