This issue is common when changing the input of the TV. Please ensure that the cable box is ON (green light around the left side button) as well as the TV. Take the TV remote (should be the same brand as the TV), then find the button called "input" or "source" in order to change to the correct input. Most of our cable boxes are connected to the TV via HDMI or Components. Please try each HDMI input on the TV in order to find the correct one on which the cable is displaying. For further help please contact us.