So I was having issues with both of my receivers losing channels. Called DirecTV and they sent out two installers to check the problem. The installers ended up replacing the LNB at the dish and the entire wiring from the dish to the house and inside the house. They even burried the wire from the dish to the house. I had my system installed in 2005 and that installer left the cable on top of the ground and I never burried it. Kudos to these two installers. Very happy customer.