Micky .... sounds like the display properties have been changed and the selected resolution is beyond the capabilities of the TV. Try connecting a monitor instead of the TV and reset the display properties via the PC .... try a lower resolution to start with with a refresh rate of 60Hz and then replug the TV in.
Chris
October 2007
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix televisions.