After purchasing a new Pany 700 and hooking up my Cox cable DVR I noticed that I am missing a few HD channels. A repairman came out and determined that the cable within my house is of the old copper strand and replaced a section of it. Everything was fine and a few days later, I am missing a few DIFFERENT HD channels. Cold anyone tell me if a copper strand cable could cause you to miss just one or two of the HD channels? Seems strange to me. Cox also reloaded my converter box several times to no avail.