Hi John, You may have been right.I unpluged the receiver ,disconnected all the cables and started over.Reconnected everthing and all seems to be ok.I did change the optical cable from the dish receiver.I think that may have been the problem.Darn,I was all set to get a new receiver.One other question I have.Since I got the HDTV the sound goes down when I switch from SD to HD,is this normal?