Seeing your thread again reminded me of a couple things.
Some Sat dishes have dip switches on them, that have to be set for different providers (directTV, Dish, etc.). Make sure yours is set properly if equipped. You would have to do this on the roof at the dish itself. Also, make sure the output on the dish (mine has two) is hooked to the corresponding box. #1 on my dish connects to my front TV, while #2 connects to my bedroom TV. Just a couple more things to check if you are still having issues.
2015 Jayco Greyhawk 31FS