PSP Screen gets Dark but not totaly off by touching it wrong

Hello, we got this nice still working psp for my wife and the kids,
the problem is, if u touch it wrong i think at the place where the Display connector fits in to the board
than the display turn lights of but still on not totaly off…
What do u think this could be ?
is it just the conector (display cable) itself ? could i just fix that one, or is it connected to the
display unreplaceable ?
or do u think it is a diffrent problem…
how does it sound to u ?
Maybe u guy did hear something like this before and can give me a hint ?