We have three TVs linked to our Dish 500. My TV has had outtages over the past few months - the other TVs are fine. I check all connections, disconnect/reconnect, pull the SmartCard, unplug receiver, had receiver replaced, check inside/outside connections and threaten the receiver w/very foul language. Nothing works ... except sometimes. For reasons unknown, the signal returns (yes, I've run check switch a zillion plus three times). Sometimes, I get the default satellite, sometimes I get both 110 and 119 or nothing at all. Again, the other TVs aren't affected and I'm not sitting on top of a microwave, using power drills or heavy equipment in my bedroom (my sarcasm is an attempt to keep myself from bashing the receiver with something heavy - a few months of this stuff, and you'll want to hurt machines, too). Any ideas, anyone??? I've called Dish - they want to move the dish to another location. Why? The other TVs are fine and the other household members/home owner will not allow the move. Calling (sadly) Comcast next. Help. The error messages: No switch box detected, fewer satellites detected, complete signal loss and I forget the rest.