I had a four box install where I installed 2 hd dvrs and 2 dvrs on a slimeline swm 3(WNC head)dish. I connected everything and started by activation the hd dvrs first(hr22-100) then i went to the dvrs and neither dvr was able to detect the swim. I tried the dvrs where i has installed the hd dvrs with success and they still couldn't get the swm signal. I tried multiple lnbs and swim splitters and even switched the power supplies. I also even tried one dvr just by itself on the system and still nothing. Does anybody have any clue what would cause this. Iss didn't even have any idea of what the problem could be.