Question about Dell Latitude D800 Notebook

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Dell D800 display out of order

I found out yesterday that the reason my LCD kept dimming after a few minutes of use was that the backlight is broken. I'm planning on just purchasing a new display to replace the old one. Can you provide me with the steps involved? Also, any recommendations on places where I can buy just the display?

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  • gteuser Apr 29, 2008

    I found out that I can simply purchase a new backlight for around $15.00 and replace the broken one. Can anyone help me with backlight installation instructions for Latitude D800?

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You can find a great many displays for sale on e bay from great places for rather cheap. I just repalced the mother board on my Inspiron 600m for $119 direct from Japan right off the line. As for replacing, it is rather easy.... there are little rubber stoppers around your screen about the size of pincle erasers. Under these is screws, undoo the screws to remove the plastic housing. Then where the power button is, that strip of plastic comes up easy from either the left or the right... you will see a little slot for a small flat head scew driver to go in to pry up the side. Pry it up and (make sure you have the screen laying flat ie, all the way open) and pull the strip up but not to hard, it should come up pretty easy. This will give you access to the connection for the cables to the screen. Then it is just undooing the screws that mount the hinges and then screen from the back pastics and then repeating in reverse.


The following is a link to a 15.4" lcd for the dell D800 on ebay that includes the plastics and hinges, so all you would have to do is remove the plastic by the power button and then it is plug n play.

http://cgi.ebay.com/Dell-Latitude-D800-Laptop-LCD-with-Cover-Hinges-UXGA_W0QQitemZ220227079416QQihZ012QQcategoryZ31569QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Posted on Apr 29, 2008

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Can hardly see anything on the display of DELL latitude D800


try to adjust the backlight of the LCD by pressing and holding the FN key and press the up arrow key. also try to update the video/graphics driver of your Dell Latitude D800 . you can download it here: http://support.dell.com/support/downloads/driverslist.aspx?c=us&cs=19&l=en&s=dhs&ServiceTag=&SystemID=LAT_PNT_PNT_D800&os=WW1&osl=en&catid=&impid=

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Its going to be either the lcd or the inverter more then likely. Go ahead and unhook the lcd cable from the motherboard and the back of the LCD. Reseat the cable into the LCD and the motherboard. If its still dim then the best thing to do is to replace the LCD cause it comes with the inverter.

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You may have a faulty CCFL lamp. A faulty CCFL lamp may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering and/or with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, 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 or a faulty inverter that supplies high voltage to the CCFL lamp. Usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.lcdparts.net

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Sounds like your inverter or your backlight is failing. The inverter is an easy repair, the backlight can be replaced but it involves taking the LCD panel apart, The backlight comes installed on new screens. I can include a service manual below and possibly a generic guide to backlight replacement....

http://support.dell.com/support/edocs/systems/latd505/sm/display.htm#1052500

http://www.laptoprepair101.com/laptop/2007/01/31/replace-screen-inverter-fix-backlight/

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You could have a faulty inverter or a CCFL lamp, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, 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.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

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1 Answer

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You could have a faulty inverter or a CCFL lamp, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, 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.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

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1 Answer

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You could have a faulty inverter, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, 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.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

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1 Answer

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If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.

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.
Check out www.lcdparts.net for parts, repair service and DIY info.

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