Anybody seen this hardware problem before?

AlwaysSomething

Hi, I have a dell XPS M1330 laptop, running Win 7, with LED screen. Recently, when I unplug mains power, the screen goes quite dim. I have tried adjusting the brightness. I can do that, but even the brightest is quite dim. I've changed power profile. I've adjusted the brightness within my power profile. I believe it's a hardware problem.
Anybody got any experience of this? It's nice and bright on mains power.
Thanks

free4440273

AlwaysSomething wrote: »

Hi, I have a dell XPS M1330 laptop, running Win 7, with LED screen. Recently, when I unplug mains power, the screen goes quite dim. I have tried adjusting the brightness. I can do that, but even the brightest is quite dim. I've changed power profile. I've adjusted the brightness within my power profile. I believe it's a hardware problem.
Anybody got any experience of this? It's nice and bright on mains power.
Thanks

could be that the battery is no longer able to hold its charge and thus supply enough power to the screen -- explains the difference when mains is plugged in .

AlwaysSomething

It occurred to me that this is just as likely a battery problem as a display problem. I still get 4 hours use out of the battery though.

debitcardmayhem

Have you tried with the Fn key and the brightness Function key F?? not sure what it is on a Dell

Mista_C

I'm not familiar with the exact model but have you checked inside the bios/setup when you first switch on the laptop? Some Dell custom bioses have individual brightness settings for mains and battery operation. It may be as simply as adjusting the battery brightness maximum.

closed

check power saving options again

ashleypride

AlwaysSomething wrote: »

Hi, I have a dell XPS M1330 laptop, running Win 7, with LED screen. Recently, when I unplug mains power, the screen goes quite dim. I have tried adjusting the brightness. I can do that, but even the brightest is quite dim. I've changed power profile. I've adjusted the brightness within my power profile. I believe it's a hardware problem.
Anybody got any experience of this? It's nice and bright on mains power.
Thanks

http://www.geek.com/forums/topic/brightness-on-the-dell-xps-1330-screen-on-battery

UncleZen

laptop screens often go dim when you pull the charger out. Its to preserve battery life, they reduce the backlight intensity.
Theres a setting somewhere in power settings that allows you to adjust the brightness when unplugged

ChiefGrasscutter

UncleZen wrote: »

laptop screens often go dim when you pull the charger out. Its to preserve battery life, they reduce the backlight intensity.
Theres a setting somewhere in power settings that allows you to adjust the brightness when unplugged

Yup
My Samsung netbook does this. It has a hotkey combination to restore the screen brightness.

free4440273

UncleZen wrote: »

laptop screens often go dim when you pull the charger out. Its to preserve battery life, they reduce the backlight intensity.
Theres a setting somewhere in power settings that allows you to adjust the brightness when unplugged

true, and the default profile can be amended.