I swapped out the RGB from the bluray to the switch. I rebooted the switch per Key Digital. I rebooted the tv per Sharp. I also swapped dvd and sat going into the switch. The customer then called and said he was having the same issue (sound, no pic) from satellite and no longer dvd. We then swapped out the switch for a new one, rebooted it, put the inputs back to the original configuration, and he just called to say that dvds are cutting out again. It seems to happen more frequently and last for a shorter time however, Any thoughts? I can't think it could be anything else. I may have to try a Gefen switcher instead.