from what i found the problem isn't the TV nor the receiver but the STB. anytime you switch sources or turn off components always start with the stb first. the stb sends the signals to the receiver, then receiver to the tv. so i power off or swich starting with the STB to stop the signal there, then switch components or turn everything off. i was having occasional hand shake issues and from what was suggested has completely fixed my problem. i guess hdmi is so new and has that hdcp protocol and its causing lots of problems for brand new receivers, tvs, and stbs. the hdcp protocol starts with the source, the source verfies the signal. go to wikipedia and look up hdcp. i had to do tons of research to get a grasp on all this. i know its tedious to power off and switch components in a certain order but it's working for me. hope this helps, i understand your frustrations.