You might want to post over here too, more people who have a clue about these things:
Using process of elimination... Maybe a bad LNB on the dish, or a bad Power Injector? (PI is a small box that powers up the the active electronics on the satellite dish, it is located somewhere along the coax cable, between the dish and receiver) Also you might have an "SWM", a device with a splitter on it. This connects the satellite dish to the Genie receiver and also the Genie clients. The installers put my PI and SWM on the floor behind my entertainment center. It's been sitting there just fine for three years.
It looks like mine is connected like this:
satellite dish >> power injector >>SWM splitter >> Genie receiver & clients
Of course there are other types of configurations in older installations.