How to Enable HDMI-CEC on Your TV [Easy Steps] | Beebom
Why do you need HDMI CEC, how to enable and configure it on your TV
Can't figure out if there is a HDMI-CEC setting on tv. I have the Costco TCL 55S434 and plugged Roku Streambar Pro into the HDMI (ARC) and I can't power it on/off