I have just had the chassis replaced on our WD-62725 TV and everything seems to be working correctly. When the chassis was taken the repairman took our Comcast Cablecard with him which I did not realize until it was reinstalled and we didn't have any HDTV. He came up with one (more than likely not our original) and Comcast has sent the signal to it. This is where the problem lies... Our remote (original factory) seems to be working also except I cannot manually enter a channel to see an HD channel or any other channel for that matter. I can only use the UP and DOWN feature on the remote to change channels and cannot get to the HD channels. Has anyone experienced an issue such as this? Thanks for any help or suggestions.