I have an early (May 2007) black macbook display issue. Sometimes I have to adjust the tilt angle for a couple of minutes before I am able to see anything properly. I have done some research on this and found that a display adapter cable is the source of my problem. How do I find out what is the proper part number (there are two different) types for this mac. Can anyone please give me some advice as to the part number and the difficulty in this repair?