The sound bar cannot be controlled using the TV’s remote control
The HDMI Control function is not properly configured.
Confirm that the settings are properly configured as follows:
The HDMI Control function of the sound bar is enabled.
The HDMI Control function is enabled on the TV.
In the TV’s HDMI settings, the audio output destination is set to an option other than the TV’s built-in speakers.
If the sound bar still cannot be controlled with the TV’s remote control, perform the following:
Turn off the sound bar and the TV, and then turn them back on again.
Unplug the power cord of the sound bar, as well as the power cords of external devices connected to the sound bar via an HDMI cable, from the AC wall outlet. Plug them in again after about 30 seconds.