When we bulilt an extension on our house two years ago the electrician ran cables from the sky dish to a main entry point (living room). He also installed Sky sockets (2 female ones for F connectors) in two other rooms a bedroom and the kitchen so that we could run two TVs off the dish (not multiscreen just the same programmes at the same time). This worked fine at first and in differtent combinations we have had the system working from all connections (2 at a time). Now I want to activate the Sky socket in the kitchen but when I connect my sky box I don't get a signal. I've tried the join the cables in the loft which extend the main Sky terminal but nothing changes. Is there something I need to make this work?