Having problems with your Dell Inspiron 1720 Notebook ?

Back light fine with power supply and goes off on battery.

\015 I have a Dell inspiron 1720 which when the power supply is plugged in the brightness works fine. Then when you unplug the powersupply and run on battery the backlight goes fully off. Just seeing if you have any solutions as I have never seen it before.\015

Answers :

I would need to know what operating system you are running because Vista has a setting for the display brightness when running on batteries. I would suspect that, that setting is turned down to conserve battery power. If this is not the case, then the battery may be too weak to put out the correct voltage requirements for the display. If you have Vista, go to the control panel > power options > In the left pane, look for the display brightness > here you can change the brightness for running on battery and for AC power.
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