Backlight wont work on battery after spill...

T4x series specific matters only
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stevens
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Joined: Tue Jan 17, 2006 12:29 pm

Backlight wont work on battery after spill...

#1 Post by stevens » Tue Jan 17, 2006 12:32 pm

I've almost completely fixed my t42 after a a fairly major spill. Everything works except the dvd/cdrw drive and the lcd backlight on battery.

The dvd/cdrw in the device manager says that the driver is corrupt, but every time I install a new driver it just says the same thing. The drive is a Matshita UJDA765. Does anyone know were I can get the latest driver? Im using XP and I always though cd drivers were built into XP so im confused as to why the device manager is telling me there are driver issues.

The biggest issue though is the fact that the lcd backlight will not work on battery power. The backlight works just fine when on AC power, but when I disconnect the laptop from the AC power source the backlight automatically turns off. I know the lcd is still on bc i can still barely see the picture, but even when i try to adjust the brightness the backlight still stays off. When I plug the laptop back into AC power the backlight does not come back on until I FN F3 and turn the lcd off and then turn it back on. Does anyone have any ideas as to why my computer is doing this and what I can do to fix it?

Thanks
Steven

stevens
Posts: 2
Joined: Tue Jan 17, 2006 12:29 pm

#2 Post by stevens » Wed Jan 18, 2006 3:50 pm

After a reformat and reinstall of the OS, the dvd/cdrw drive works, but the backlight still will not turn on when the laptop is running off battery power.

I flashed to the lastest bios and that didnt work either.

I've disabled every power profile I can think of, including speedstep and all the power profiles in the bios, and it still wont turn on under battery power.

Anyone have any ideas?

Thanks
Steven

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