Hey I'm not exactly the most technological person and I'm having trouble receiving freeview.

I have a SONY BRAVIA KDL-42W654A and have connected a cable from the TV to the wall socket. I know the cable works because it has come from a TV that receives channels. As far as I'm aware the socket itself is fine.

On settings I have chosen Digital Auto-Tune and chosen Cable not Antenna. The TV then takes 5-10 mins to search, finding no channels available. Have I missed something out/not connected cables properly or potentially sometyhing else wrong?