Switch power on backlight but no image on screen

Hi there everyone I’m new to this site I bought a job lot of items and in there was a faulty switch lite it seems to come on when plugged in or power button pressed you can see backlight but no image any advise on what to start with first as to fixing it I have seen videos online that state it could be a cpu fault but I’m unsure if this is classes a blue screen on death? Any advice would be highly appreciated thanks.

Did you check the lcd connector for bend pins and so on?

Yes inspected that appears to be fine