Started today where channels 228, 229, and 260 all give me a 771 error at times. Looking at signal strength on sat 101° all even transponders are at 0. Are those 3 channels (and there may be other channels that are out) on Sat 101°? It did it earlier today and then they started working again but now they are out again. It is overcast today and there has been some light rain but nothing heavy or severe.