We have 2 Hoppers & 3 Joeys, 1 Joey is connected to a Hopper and the other 2 Joeys are connected to the other Hopper. My daughters tell me their TVs (the 2 Joeys) aren't working so I go to investigate. Joeys are saying they can't find a Hopper and to check the wiring, etc. Neither of the Joeys...