You are aware the TV has to be in the correct input to receive cable, and you have to tell it to do a cable search for channels. On ours, I need to be in the TV input, not HDMI input, which I use for the Fire Stick. The tv will ask if you are watching through an antenna or cable. You choose and then let it do a channel search. Our stereo is connected to the ARC input on the TV and provides sound through the speakers when watching tv.
I will add, we don't have Dish, so your setup is probably different. Our Winegard 2.0 has nothing to do with the tv itself, as it handles the Wi-Fi signal available for the tv, computers etc. and controlled from the Jaycommand tablet or Winegard connect App on phone. We have a plug with a satellite/ tv connections and the amplifier button for regular tv.
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