Another device interfering with HDMI connection. I just bought the Sonos Arc, connecting to my Samsung TV QN65Q70TAGCZB via HDMI ARC/CEC. When my cable box and sonos are connected via HDMI, no sound through Sonos ARC. I can only get sound when I disconnect everything else, to include cable. Everything hooked correctly, tv setup correct. This happens every time the TV is turned off.
Best answer by Ken_GriffithsView original