It sounds like your A/V Cable is DOA, or your A/V port is either DOA or dirty. Take 91% or higher rubbing alcohol and put some in a spray bottle spray the cord just a little on its connectors, and spray the A/V port just a little. Tilt your console back on the ports and sit it against something solid like a cabinet. Let the rubbing alcohol flush the ports and dry (takes less than 5 minutes). Then plug the cable into the port and make sure your TV is on its A/V channel. That should solve your issue.