My satelitte has been going to the "aquiring satellitte signal" message for about 3 weeks. Usually I could unplug it for 15 sec and plug it back in and would get it back. Well finally it went out Sunday for good, stuck on the aquiring satellite signal again. The tech came out yesterday and tested another receiver, nothing. He checked the postioning of the satellitte, still nothing. Finally he checked the cable under the house and found it had been chewed by something. so he replaced the cable and still got no signal on the reciever. The extra one he had worked so he left it with me. But today, once again I'm stuck on the aquiring satellitte signal. It worked for about an hour and half today and several hours last night. Since we've replaced the cable, and receiver, whatelse can it be?? I have dish 500. When I do a switch test it says no switch box installed. Any help would be appreciated. Thank you!