i get an extremely blurry picture with diagonal lines across the screen. can see some of the background picture but flickers. have turned the system off and back on, changed HDMI cords, blown on the back to make sure no dust has gotten inside, hooked up different devices to the TV with clear picture then to rt2906 blurry picture ruling out possible issue with TV. unit only 7 months since purchase. in a well ventalated spot and does not seem to feel hot or even fairly warm to the touch.