LG Soundbar HDMI ARC Not Working — Fix

What Does This Error Mean?

LG soundbar HDMI ARC not working is caused by SimpLink (HDMI-CEC) being disabled on the LG TV, using a non-ARC HDMI port, or a cable that does not support ARC. Enable SimpLink and use the ARC-labelled port.

How to Fix It

Use the HDMI ARC port on the TV
Enable SimpLink on LG TV
Set Sound Out to HDMI ARC
Use a High Speed HDMI cable
Power cycle both devices
Update LG TV firmware

Frequently Asked Questions

LG TV does not detect soundbar via HDMI ARC?

Confirm SimpLink is On, Auto Power Sync is On, and the cable is in the ARC-labelled port. If the TV still does not detect the soundbar, try a different HDMI cable.

LG soundbar HDMI ARC drops audio randomly?

Random audio drops are almost always caused by a marginal cable. Try a new certified Premium High Speed HDMI cable and update both TV and soundbar firmware.

Non-LG TV with LG soundbar — ARC not working?

Enable HDMI-CEC on your non-LG TV (called Anynet+ on Samsung, Bravia Sync on Sony). Then set TV audio output to HDMI ARC in TV sound settings.