If I change the channel (i.e. from HDMI to DTV) then switch it back to HDMI for my Apple TV, the screen just stays blank. The light is on so the Apple TV is on, and it flickers when I press a button on the remote. But I can't get anything to appear on the screen - I have to keep pressing buttons (holding play to turn it off and on again works sometimes). This is a real pain. Everything works perfectly, it is just when I change the channel or turn the TV off I have a hard time getting the Apple TV to come on again. Anyone any ideas how to fix this? Or is this a widely known problem (couldn't see anything..)?