Followed the advice, the following happened.
connected the laptop through the scart lead into the tv
booted up laptop
during boot the tv screen showed signs of the boot process, shadowed images that you may of seen 20 years ago on an old tv
when screen saver came up, nothing but fuzz on tv screen
went to screen resolution tool
an "unknown monitor" was found
laptop went blank and no change to tv screen
Thanks for the ideas so far, but more is welcome...