With the Tivo, the only thing I am turning off is the video signal. the only purpose in doing this is to make the LED lights go out so my wife thinks it's turned off. If the lights stay on she complains that it's wasting electricity. I know.... I know.... the amount of electricity it uses is so miniscual that you probably can't even measure it. But try telling her that.

Ernie,

I will try leaving the DVR on for at least an hour before turning on the TV to see if I still get the screen dropout. If it's not the DVR then I would assume it would have to be the HDMI cable, HDMI connector (either on the DVR end or the TV End) or the HDMI circuitry in the TV. I don't experience any of these anomolies when using other sources connected through component connections.

What would you say is the most likely culprit?