I have the DSR505 and it stopped working. Satellite says over 70% signal, but can only get one Shaw weather channel and one of the promo channels to work. All the rest say "contact service provider for access to this channel" and a black screen. I have tried unplugging unit now twice today. Does nothing. I have checked all the wires. Nothing. The coaxial cable goes directly into my LCD tv. So what is my issue? Anyone know?