Inspiron 15R N5010 horizontal white lines on screen

Hi!

I have an Inspiron N5010 that shows horizontal white lines on the screen, usually only when i move the lid, but sometimes at all times. I already checked the connection to the LCD and it was fine, but it still show the white lines. Now I am wondering if I should buy only a new LCD cable or the entire screen?

Thanks,

LeMo93