Gaming NDS lite bottom screen issue

[Piebe]

Hi,

I bought a ds-lite yesterday and to my unpleasant surprise the bottom screen is less clearer than the top.
When playing phantom hourglass it displays everything, but the colors are less bright and you see slightly horizontal stripes.
Link almost seems like a ghost and i don't like it. Was i screwed?

 

[Piebe]

I know now that in fact i am.