Backlight stopped working, but external video is fine
Hi! I've got a 1.2GHZ 12" G4 iBook, and the backlight has stopped working. It was fine, and I installed the OS with the bottom case and shielding off, and then I put the shielding and bottom on, and from that point on, the backlight will not work. External video shows up fine. I tried 3 known-good screen assemblies and screens (including good inverters, cabling, etc.) and none of them showed a backlight, although, again, a faint image is visible, and external video works fine. It almost seems as if I may have done some damage to the machine while putting the lower shielding on?
Lemerise, could this be a "logic board inverter circuitry" issue, and if so, is there anything that can be done?
Is this a good question?