Mitac Minote

Question

I have a "classic" Minote 8060B - P1454IW which is brilliant although getting a bit slow that has now decided to intermittetly turn out the screen fluoro lights.
The image is still showing and performance is OK but I can't see the image.
Two questions:
Can this screen problem be easily fixed (new lights?)
What is the easiest way to speed up the performance?