I have checked the aerial signal strength and it is fine. I can watch the TV fine by itself. What does the digit '1' mean that comes up on the DVD recorder when I press GUIDE? THe aerial is plugged into RF In and a coaxial cable is plugged into RF Out one end and the other end into the TV Antennae. THe two ends of the SCART lead are plugged in correctly. I am not clear why you say press the AV bottom repeatedly. Do you mean under 'Source' on the TV remote control? Or the little button on the DVD recorder remote control? Either way the message on the screen simply says I am not connected to AV.
BUT….although I am using SCART, I have a vague memory that I once was using AV. Am I doing something wrong with the cabling?