Display intermittently loses pixel clarity/color performance
The display on my 600 MHz iBook can start out normal or intermittently (actually more frequently than not) show distorted color and pixel clarity. When it starts out normal it will at some point start start flickering in a few spots across the display, then the whole display becomes of poor pixel quality. Then unpredictably flicker back to normal display. No timing relatedness to pressure or attempted bending of its base or display screen, or to duration of time "on". Any suggestions? Thanks, Rich.
Connect the ibook on an external monitor and if you have the same distorted video on the external then you logic board is probably kaput (faulty GPU). If the video is normal then:
1- check LVDS (video) cable connections both ends / replace LVDS cable
2- replace LCD panel.
You may be experiencing the common g3 video chip defect. Please check out my answer to the question in the link below. It could also be that the video cable on the back of the screen is loose, although I'd test for the chip issue first, as described in my post, before taking apart the screen casing.