-Make sure u have your Aantanna setup setting right, if the are right,First do this ...Turn OFF ur reciever from the back and turn it back on after 2 min see if that help if not try moving the switch to within a 5 or 8 feet or less of the receiver..check your cabels and make sure they aren't kinked or frayed along the line, and that the connections to the lnb are snug. Same for the switch from sat to tv. You can also check and make sure that the connectors on the rgb cabel are crimped properly.