2008 Allegro Bus motorhome, bought used in 2019. Trying to install a Dish system, for the main TV only right now. Winegard Trav'ler antenna, DPH42 switch & power inserter, Hopper3 receiver. When the Hopper is installed in the coach, it will NOT acquire the satellites, even though the Trav'ler control panel shows locked in to all 3 satellites (110W, 119W, 129W) and using an external coax directly from the DPH42 switch to the power inserter (bypassing all the coach wiring). Last week, I brought all the hardware into my house and hooked it up to an inside TV and presto! everything worked perfectly and we had all DISH programming. Breaking the fewest # of coax connections as possible (2) and reconnecting them inside the coach ... no signal acquired. Today, trying to backtrack & check, even that setup didn't work. Can't find any local techs to visit. Starting to think that I've got a bum Hopper3. Thanks in advance for any thoughts.