Vizio Sound Bar Connected to DTV

I just moved to a new apt. I have a TCL Smart TV with DTV and a Vizio Sound bar. When I switch from Smart TV to DTV my Sound bar powers off. I then press the volume button on the DTV remote and the Sound Bar powers on. I can then control the volume with the DTV remote. Any ideas or suggestions on why this is happening. It did not do this before my move so I assume I changed something on DTV. I tried the suggestions on the Vizio sound bar manual to keep the sound bar powered all the time but that did not work. Any ideas or suggestions on why my Sound bar is powering off will be appreciated