I have a Panasonic Plasma (TH-42PC77U). I've gone through every possible thread that could be close to my problem to no avail. It does work on my older rear projection TV which is one of the first TV's to have HDMI (which pisses me off). The best answer I got from the Logitech support person was that I should try an intermediate HDMI switch between the two. I guess I wanted to see if the bigger brains out there had any other suggestions? Thanks in advance. EDIT: Just to be clear, I've tried multiple HDMI cords on both HDMI ports on my TV.