Satellite U400 chess backlit

The backlight on my Satellite U400 guard failed. If I close the lid and open again once it comes back for a few seconds and then fails again UNLESS the power cord is out and the laptop running on battery power at which case it acts normally.

I changed the inverter. Any other ideas?

> UNLESS power cord is out and the laptop running on battery power, in which case it is normally.

Did you check if the key Fn + F6 and Fn F7 combination would increase and the brightness of the screen?

Please check if the brightness of the screen can be changed using these buttons then the FL inverter should be ok and the problem could be linked to the Win7 power management setting.

If the problem is related to power management settings, then I would recommend this change.

* Go to control panel-> power-> Settings Options * change Plan

Here you can adjust the brightness of plan
You can set this separately for the use of the battery or AC mode

Tags: Toshiba

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