White screen with colored lines on it!

I have a Macbook Unibody white from 2009 (a1342). The macbook shows a white screen with colored lines on the lcd. On an external display everything works fine.

From previous experience with a macbook air i know it can either be one of 3 things:

-The LCD display itself is broken

-The LVDS cable is broken

-Or the LVDS connector on the motherboard needs a reflow.

Before purchasing both a lvds cable and a new lcd display i was wondering if someone has seen this problem before and what is most likely fix.

Thanks!