Check connections from the box to the TV are secure and snug. Make sure you are on the proper INPUT to see your converter’s signals. Using your original TV remote, make sure your TV is on its proper INPUT to receive the box signals (HDMI 1, HDMI 2, Component, Video, etc.). If your converter is hooked up to your TV with coaxial cable, make sure the TV is tuned to channel 4 (PA/IL) or 3 (DC/MD/VA/MA/NY)