Apple PowerBook 165 - Manual (Page 32)

Troubleshooting Symptom Charts/Video - 8
Video
Pixel is always white PowerBook 180
If there are more than five voids (pixels that are always white),
or two or more voids within one inch of each other, replace
display (CPRC/international repairers only) or return computer
to Apple.
PowerBooks 160 and 165
Replace display.
Pixel is always black PowerBook 180
Replace display (CPRC/international repairers only) or return
computer to Apple.
PowerBooks 160 and 165
Replace display.