this happens to me at least twice a week.what i have to do is turn off tv and unplug sky.wait and restart everything.when it 1st happened i called sky and was told i was probably pressing the channels to fast (dont know abot that). anyways....she told me to unplug everything,wait and then turn it all on.it worked so now i have to keep doing this every time theres no picture.check the scart at back of tv also.