I have an HR20 with Philadelphia locals. I have problems only with the local HD channels, Sometimes I will have a signal on 2 or 3 channels, but it say "Searching for Satellite Signal" n the other channels. For example, right now I have a signal on NBC, FOX, & CW but not CBS, ABC & MyNetworkTV. I can restore those three by going to Sat & Ant and viewing the Signal strength and exiting out, but then I don't have NBC, FOX & CW. Does anyone have a solution?