Question about Dell Inspiron 6000 Notebook

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Laptop screen is very dark even though harddrive is running fine

Computer screen very dark no backlight when computer is on

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  • Anonymous Feb 14, 2009

    My dell 630m laptop screen is dark even though the hardware

    is running fine

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  • 39 Answers

There are several reasons this could be happening but lets try adjusting your brightness/contrast settings.

Go to; Start Menu > Control Panel > Power Options
You should see something like this.
http://i298.photobucket.com/albums/mm260/mshockey89/Tech%20Support/Poweroptions.jpg

On the left hand side of the screen select Adjust the Display Brightness. You should see somthing like this.
http://i298.photobucket.com/albums/mm260/mshockey89/Tech%20Support/EditplanSetting.jpg

Now just play with the brightness settings until you get the desired effect.

Also, make sure you don't have the brightness settings too low for your off battery settings. This could be a reason as to why your having this issue. If this doesn't fix the problem, let me know.

Posted on Jan 03, 2009

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If you can very vaguely see the icons or pictures displayed on the screen even though dark it maybe either a problem with your inverter or Lcd backlight. If no images are seen even though you look carefully then it may be the onboard vga controller. It maybe worth checking to see if your laptop is under warranty with Hp see link.

h10025.www1.hp.com/ewfrf/wc/weInput

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This looks like a backlight problem. Every LCD has a backlight the older ones have Fluorescent lamps and newer ones have LED.
Most probably your laptops screen is equipped with a fluorescent lamp.
You may need to replace the backlight or the inverter of the screen.
I would not recommend doing it at home because messing with a LCD screen can damage it (make it unrepairable) and you might get electrocuted.
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Have you tested it with an external monitor?

I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

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Have you tested it with an external monitor?

I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

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If you hear the hard drive spinning and you think Windows is working but you can't see an image then :-
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Defective CCFL backlight, it may have the following symptom:

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Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
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