Hi, This sounds strange, but i have a phillips combi dvd/vcr and an old panasonic 4:3 tv. I have a roof top ariel but no digibox attached, when i turn on the dvd/vcr combi, i lose channel 4's signal. I thought this was just a old t.v problem. But i have recently bought a new Phillips Lcd tv and i am still getting the same problem. Anyone got any ideas please?