The hinges on my Powerbook G4 have been on their way out for a long time. Today finally, I let the screen drop back and the hinge by the power button snapped and the backlighting went out. (The outermost half-inch section of hinge snapped off from the LCD casing.)
I had a screen from a dead Powerbook, so I took this one out and installed the replacement unit. Unfortunatley, even with the new display I still have no backlighting.
Notably, the new display is missing the blue and white cables, but I'm almost certain this is only for the sleep light. I guess I could try swapping in the inverter board out of the dead unit, but that ons'z in unknoan condition, and I can't imagine how I could have damaged the inverter board by letting the screen drip.
Any thoughts are most appreciated. I really want to get this working again!
Interestingly, here's a fellow with an almost identical problem: