Welcome to the forum! First, smart TV's are set up for multiple inputs, you will need to go into your tv settings, set it to cable and have it scan for channels. Second, your rig probably has an over the air antenna that is powered and has a "booster". That will need to be turned off for the cable signal to pass to the TV. Start by turning that off, then scan for your channels. Each TV if more than 1 in the rig will need to scan. Hope that helps!