OK, I purchased a used Powerbook G4 off Craig's List. When I looked it over, everything seemed to be fine and dandy. But, when I got it home in dimmer light, I noticed a white spot on the left side of the display. I thought it was just normal backlight bleed, but I did some research on the subject, and found an issue with older Powerbooks (1Ghz and 1.25Ghz, I have a 1.67Ghz) that seemed to be a similar issue. The spot is most visible on a white background. On a black background, it is not visible at all. The spot is just above the center of the display, all the way on the left side. Is there any way to resolve this?