Satellite M300 display lights then the backlight turns off

I have a M300 Satellite.
When I turn on my computer the screen comes on then the backlight turns off.
Display on an external monitor.
I have tried funtion buttons, move the screen has no effect.

Any ideas?

Hello

Are you able to increase the backlight using Fn + F7?
Have you checked the power management option that controls the backlight for the different consumption patterns?
Will you please do because the power management could lower the backlight to save battery.

If changing the settings of theses will not help, so I guess FL inverter small failures that may cause this problem.
In this case that the parts must be replaced

Tags: Toshiba

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