I am seeing all of the new channels on my roku tv (TCL 75R615), but I'm not getting audio. The TV is connected to a Dolby Atmos capable receiver via ARC hdmi. Tried a few different audio settings with no change. Tried my other roku tv (TCL 55S525), which is not connected to an audio receiver and it...

I am seeing all of the new channels on my roku tv (TCL 75R615), but I'm not getting audio. The TV is connected to a Dolby Atmos capable receiver via ARC hdmi. Tried a few different audio settings with no change. Tried my other roku tv (TCL 55S525), which is not connected to an audio receiver and it ...