you must open the menu on your TV and choose the HDMI ARC through your soundbar’s remote. In addition, it’s best to run the scan on your TV and see if the soundbar appears or not.
Quite often, this problem will only pop up because you have a bug of some sort on the input device you are using. This could be the TV that you are trying to play the media file on and not the Sound Bar itself. Other times, the bug will be with the Sound Bar. In either case, ...
If you are not all that keen on our previous solution, there is also another option available to you.You could always just opt to buy another remote that will do the job you want it to. The main thing to keep in mind here is that the remote will not be manufactured by Vizio themselv...