I recently had to move my BUD because of trees. Now it is about 125 feet away from my receiver. I've tried three different receivers and none will receive a signal. If I move about 75 feet closer everything is OK. Is there an amplifier that can be used to boost the signal?
I really don't think distance is a problem. I ran cable to a Dish Network system that was over 500 feet from the house, and had no problem. I did installs on BUD's that were over 300 feet and they worked perfectly. I used a lot of RG-6 quad shield cable on long runs, which doesn't hurt even on short runs. You can take a ohm meter and check the cable. On one end, short the center wire to the ground and do a continuity test. If you have nothing, the cable is broken. Sometimes if a cable has a broken conductor, it will open or close with temperature changes.
This is an annoying problem that can be hard to locate. If in doubt, change the cable. Your problem seems like a cable problem rather than a receiver or LNB problem.