How can I fix my Nokia 3230 display screen?

I have a nokia 3230 and I haven't had any problem with it till recently.
1) At first the display screen started to show vertical and horizontal lines on and off.
2) Then it statred to fade till I press hard on top of the screen.
3) Sometimes I get white screen till I press the top again.
4) Although I need to press the top "hard" in order to read, send or use the phone, it remains fully functional.
5) Is there any way I can fix my screen?!

Stouqi
August 2007