Originally Posted by moghedien14
You may want to check the cabling and connections also. I was getting the 771 message(along with the 721 and "bad multiswitch" message) only on the HD channels until I replaced the coax cable running between the wall and my receiver.
Good point! And this is another reason for the service policy. It covers all cabling from the dish to the house, within the house's walls, and then to the receiver even if DirecTV didn't do the initial cabling installation.