hp compac nx9000 monitor black on angle biget rthen 90

[engine]

Hi

Last month I have problem with LCD on HP compaq nx9000 laptop.

It works if angle is less then 90 degrees
and if I open it more it goes almost complitely black
(I can see hardly some shapes on display).

Hope that somebody knows what is cause of problem
and if it is something I can fix by changing parts .

Thanks in advance,

Engine.