Sky signal disappeared last night. It displayed a message "NO LISTINGS AVAILABLE" which has now gone off screen. Saw about the snow on dish problem above. Brushed off snow on arm of dish. No snow on dish itself. Still no TV. "AV 2" displayed on top left of screen. The only sound is a voice telling you technical info re SKY. Husband phoned SKY and was asked to do different things with box still no sucess. They will send a man out on Christmas eve. 100 Euros call out charge. Would anybody know what we could try in case he does not come. Thank YOU