Hope someone can help with DMX741 problem not new to satellite tv first setup mid 1980's new to this lnb. I have a 10' unamesh 920 4DTV CorotorII Plus second fta receiver Captain 8000Hd. Setup on 97w Pastor Scott, wanted to retire 920 bought Dmx741 and Vbox X. Problem installed 741 in corotor scaler ring signal and quality 80-65 in setup menu same as corotor, exit menu to channel no signal. tried tweaking still no signal out of seup menu. Just received replacement 741 got U this time. Setup nothing with jumper cable connected connected just to ku,signal in setup menu nothing when I go to channel. Help please! also put corotor back on both times and it works as well as it did before.