My Samsung HLN507W is connected to a Time Warner Digital Cable box and to Power and also to a Denon AVR5700 for some video inputs. With the TV and all attached items powered off, I am not able to access the Samsung HLN service menu when I follow the procedure: "With the TV off, press Mute-1-8-2-Power in sequence." Instead I get a dimly lighted blank screen for about 4 seconds followed by a black screen with "AIR 3" overlayed upon it. I believe the "AIR 3" wording always appears whenever the Time Warner Cable Box is powered off. Any suggestions what to try will be appreciated. I want to findout the Sammy's firmware level.