I installed satellite system on 2002 pansat 2700a one LMB works great lately channels start disappearing so I reset manufactory setting then scan satellite found only 60 channels signal is great quality perfect but the channels I want doesn't come usually more than 100 channels what I have to do any one can help me? I brought my friend box to test I installed work perfect all channels but my dad box is totally different box but still I can see all channels