Question about Dell Latitude D505 Notebook

1 Answer

Backlight of LCD turns off

My Dell Latitude D505 works fine other than the backlight turns off after a few seconds after de Dell logo.

If I press the little switch (lid close) the backlight turns on for a few seconds then it turns off again.

After several tests I have concluded that the backlight lamp works but something else makes it turn off.

Is there a timer adjustment?
Is there a part that controls the time it stays on?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 59 Answers

Hi,
For latitude systems they have this ambient light sensor. it basically adjusts the brightness of the screen depening on room lighting. try to go to bios by hitting F2 on the dell logo. go to video and try to look for ambient light sensor. however, im not sure if your computer has that feature I have a second option for you though. based on the troubleshooting you've done, it seems that the video back lighting is affected by movement. it would be a good try to reseat the LCD cable. you can use this link to guide you in fixing the computer : http://support.dell.com/support/edocs/systems/latd505/sm/keyboard.htm
all you need to do is to take out the keyboard with 2 screw holding it in place. the LCD cable should then be accessible. it a thick cable that coming out of the Left hinge.

Hope this helps.

thanks.

Posted on Dec 25, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

D505 replacement screen has not solved the backlight problem


The drive voltage from the motherboard to the input of the inverter board is missing which in turn drives the backlight, trouble is you will need a service manual to track the problem. Try www.dell.com for customer support and the technical department, they may be able to provide answers.

Jul 01, 2012 | Dell Latitude D505 Notebook

1 Answer

The backlight won't turn on but occasionally will flicker.


Suggest you replace the Inverter. A Backlight goes out all at once.
90% of the time the Inverter is the hardware part at fault.

[ An LCD screen cannot produce enough light by itself.
A Backlight is used to supply the needed extra lighting.
A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a much smaller scale

An Inverter is used to required power for the LCD screen, and the Backlight.
Boosts power up for the LCD screen, brings it down for the Backlight.

Dell Support > Latitude D600 Notebook PC > Service Manual

http://support.dell.com/support/edocs/systems/latd600/en/sm/index.htm

Replacing an Inverter is a simple job. Replacing a Backlight is not.
The Backlight is located within the LCD screen assembly.

The metal frame of the LCD screen assembly is removed along the edge where the Backlight is located, to access replacing the Backlight.

In the above list for Service Manual, click on > Display Assembly and Display Latch.

This information shows you where the Inverter is located on a Dell Latitude D620 Notebook PC.
The Latitude D620 is part of the Latitude D600 series of Notebook PC's.

http://www.insidemylaptop.com/remove-replace-lcd-screen-dell-latitude-d620-laptop/

Just one place from a quick search, that sells Inverters for a Latitude D600 series Notebook PC,

http://www.parts-people.com/index.php?action=item&id=2895

MATCH the part number listed that they have, to the part number on your Inverter.
You have to have THE correct Inverter.

Regards,
joecoolvette

Nov 05, 2010 | Dell Latitude D600 Notebook

1 Answer

No backlight showing


If the LCD has no backlight and the display works on an external monitor, the a LCD replacement is the likely answer.
You can get LCD and inverter for about $60
http://shop.ebay.com/i.html?_nkw=Latitude+D505+LCD+inverter&_sacat=0&_odkw=Latitude+D505+LCD&_osacat=0&_trksid=p3286.c0.m270.l1313

Sep 26, 2010 | Dell Latitude D505 Notebook

1 Answer

Display is very dark and can barely be viewed. Brightness controls don't do anything. Any suggestions? It is a Dell latitude 505.


Sounds like the back light has gone.
You may be lucky and you just have a loose connection, its worth taking the front off the screen surround and re-seating all conectors.
If it is the backlight, you can get a replacement quite cheap (£10)
I found this site
http://www.keyboard4laptop.com/ccfl-backlight-lamp-dell-latitude-d500-d505-p-4580.html?currency=GBP&language=en

Jul 11, 2010 | Dell Latitude D505 Notebook

1 Answer

The screen of my D505 all of a sudden turns black although the notebook is still running OK. Have to reboot the notebook to get the light of the display on again but never know how long it will hold. Any...


Sounds like it needs a new backlight. Some people change them,I find it easier to replace the screen. To verify it's the backlight, detach the screen from it's case but leave it plugged in. Then when it "blacks out", shine a flashlight through the back of the screen. If you can now see the screen, then it's the backlight.

Mar 16, 2010 | Dell Latitude D505 Notebook

1 Answer

When i turn on my dell latitude D505 the backlight


Either the video cable has been damaged or unplugged or the video processor is malfunctioning. Check this by connecting an external monitor. If the video is all there then press the Fn(function) and F4 key. This should switch the video from the external monitor to the internal screen. If this doesn't happen or if the external monitor shows no video then the laptop needs to see a reputable repair perso or check my website www.micromendllc.com

Feb 25, 2010 | Dell Latitude D505 Notebook

1 Answer

How to replace backlight on a latitude e5400


Please check the Backlight in BIOS. To go to BIOS, restart your system and start tapping the F2 key. Check if the backlight is fine or not. IF not , you need to get the LCD replace.

Oct 17, 2009 | Dell Latitude E5400 Laptop

2 Answers

I have a Dell laptop D505. The laptop powers up but the screen display is very dim. I can't see the image on the monitor. I've tried to manually increase the color/brightness button and nothing changes. ...


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/

Sep 23, 2009 | Dell Latitude D505 Notebook

1 Answer

Dell Latitude LCD screen is dark, but computer is still working.


It sounds like the backlight has burned out. The faint light you are seeing is ambient light in your room being reflected through the LCD. Try it in a perfectly dark room and see if you can see anything on the screen. The following page should give you a sense of what is involved in replacing a backlight: http://home.comcast.net/~stonent/screenfix.htm If you aren't comfortable taking things like this apart, I would recommend finding a local repair shop to replace the backlight.

Feb 15, 2007 | Dell E173FP 17" LCD Monitor

Not finding what you are looking for?
Dell Latitude D505 Notebook Logo

2,980 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18425 Answers

Alun Cox

Level 3 Expert

2678 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2022 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...