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?
Thanks!
Это хороший вопрос?
3 Комментариев
I noticed that the little springy copper thing next to the inverter plug is broken off...could this be the microfuse that controls the backlight? I tried taking a tiny piece of copper and bridging the two ends of the copper connectors, but no luck. I think this is the right microfuse though...maybe I need to solder it?
из rdklinc
Looking further into this, it seems the microfuse is not the copper springy thing, but more likely a tiny fuse-looking object just next to it. It doesn't look especially burnt out though, and even if it was, it's almost too tiny to tell, or to work with.
из rdklinc
Success! I clamped both ends of the fuse with metal tweezers (probably at the risk or frying myself), and I got a backlight! Now I just need to figure out how to solder the two ends, since the plastic fuse mechanism is between the two posts and will make it tricky.
из rdklinc