Yeah all connections are in. I've tried different scart ports and the vga port.
When i turn the tv on i get the input display in the top left (ie scart) but when that disappears all i get is sound. If i'm quick whilst that scart text is in the top left i can bring the menu up, but then that goes as well.
Are you sure it's a backlight fault?
I got the unit from Comet and they are sending someone out to take a look. I will let you know what they say.