Total loss of picture on Satellite???

I have a 2012 Tiffin Open Road Pusher, with Dish hooked up to a permanent satellite on a pole during the summer. I was watching TV last night when the picture went totally blank as I was switching a light on over the couch. When I turn the sat receiver off and on, nothing comes on the screen. I checked all the connections, but I don't think that is the issue, as I would normally be able to get a setup or menu screen if it was just a loose connection. I tried a friends receiver, but nothing. I can switch over to antenna and I have a picture with that. Just nothing on satellite. Could I have a loose connection at the distribution box where all the cables come together before the final cable goes to the TV's?? I don't even know where that is on this coach. One of my earlier Tiffin's had that mounted on a frame rail underneath the coach. Anyone know where that might be on this coach, and would that make sense?
I didn't bother to call Dish, since I don't even get a setup or menu screen.