I posted about this machine some weeks ago, but no replies....
Symptom: backlight refuses to come on. Image visible on lcd under close scrutiny. Laptop boots normally, except no backlight. Symptom happened suddenly. One boot before, everything appeared normal, then no backlight. The unit was out of my control up to that time, so I don't know what might have occurred in between. I do know the unit was transported immediately prior to the failure, but have no knowledge of any shock (or awe for that matter) incident.
Inverter? Replaced with NIB unit via eBay. Still no backlight.
Bulb? Subbed in known working bulb from another laptop. It doesn't light with new inverter.
So, where to go from here? There are four pins on the input side of the inverter. Two of them show voltage (? 5v dc). Has anyone got some idea of what they 'should' measure? I've jiggled all cables with no success. I've disassembled the base unit down to the plug which connects the display. Reseating that produces no joy.