Screen on macbook pro was very dim. I could see the picture but the screen would not brighten. After reading some other forums I decided the display inverter was the problem.
It was a pretty easy repair following all of the steps. It took about 45 mins to get the new part in and the machine put back together.
My only advice would be to label your screws and keep them in order. Doing that made it come apart and back together fairly easy.