The Pi has a yellow phono socket for video output. The TV has a conventional TV aerial input, and a Scart socket. We don't have a lead with Scart plug on one end, and three phono plugs on the other, but I did find an adaptor thingy that is a Scart plug, with three phonos on the back. No lead. I plugged that into the TV, and used an ordinary audio lead, with phono plug on each end, to connect the adaptor to the Pi. Nothing. Went right through the tuning band of the TV, but zilch. What am I doing wrong or, more to the point, what else do I need to buy?