Hi, if anyone could shed any light on this I would be grateful. All our TV channels have suddenly gone snowy! We have an aerial on the roof and TV sockets in most rooms, but just have a TV in the living room and one in the kitchen. No digibox or freeview, just ordinary TV. All working fine until the other day then suddenly snowy channels and interference on BOTH TV's making them unwatchable. Re-tuning the TV's does not help. Do I need to call out an aerial man?? Don't really want the expense but can't see any immediate answer. Thanks in advance!