[Kymmy]

As Zing says backlight failure,

Try gently tapping the screen surround (not the screen itself) with a fingertip and see if you get anything on..

If yes then could be a dry joint/loose connection.. If not then could be a blown bulb and/or blown dc/dc board..

The board you should be able to get on ebay, the bulb depends on if it's built in or seperate to the screen