Vertical color lines appear when turned on

Gerald Herd could be caused by corroded or loose ribbon cables as well as loose TAB's. Of course it can also be the T-con board. Post some images of what your screen looks like with your question. For that use this guide. It will allow us to see what you see. Also, it helps if you can tell us what you have checked thus far.

"Hi I have coloured lines centre of tv which are vertical

unplugged ribbon cables and put pressure on the cables going into screen

Lines are constant and go over picture on screen and menu bar

lines won’t change get smaller or disappear

many help would be much appreciated"