I have a superdish and a DishPVR 921 (Subscribed legally). The receiver is connected to two DP34 videopath switches (In addition to 921,I have three more receivers and I guess that's the reson dish network installed two DP34 switches in series). I am also using the DishPro adapter between these switches and the 921 receiver to power up the switches and I guess the receiver as well.
When I run check switch it does not detect any of the three satellites (110, 119, 121)