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Compaq presario V2110US backlight

Hi,
i have a question about my backlight on my laptop. I just got the laptop back for the backlight being out and i have only used the laptop maybe a total of 12 days, and not being every day....and it's out again!!
What can I do? is there anything i can do myself to fix this? Or maybe i hit something for it to go off? What can yo do to turn the color/contrast part on again, etc.?
Thank you!

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  • Compaq Master
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If the backlight is an intermittent problem, it is likely that the video connector and or the backlight connector needs reseating. There are usually two connectors that connect the LCD display to the motherboard. You need to pull apart your laptop to reveal these connectors (these connectors are usually near the top edge of the laptop). Unplug and reconnect these connectors to re-establish a good connection.
Take note of the locations of the various screws when you remove them (some vary in length) so you can put them back in their correct location.

Posted on Jun 11, 2008

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Brightness buttons (f2 and f3 are not working


Not a lot to go on here, Prabhdeep

Need the full model information

Example,
Acer Aspire 5535-5050

Post back in a Comment, or Reply; at end of this solution

Primer:

An LCD screen does not produce light,

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

Click on the monitor icon

Because of this the LCD screen needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or more than one), or a series of LED's.
(Light Emitting Diode)

CCFL = Cold Cathode Fluorescent Lamp (Bulb)
Similar to Fluorescent lighting used in homes, and businesses; but on a MUCH smaller scale.
Average thickness is 2mm, or a little more than 1/16th of an Inch.
Or about the width of this capital letter -> O <-
Average length is almost as long, as the LCD screen is in height.

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

View the last 8 photos

(Do they break easily when trying to remove, and replace?
OH, YES!)

A screen Inverter is used to convert the power from the laptop, for the LCD screen, and Backlight.
If the laptop uses LED backlighting, it MAY or MAY NOT use a screen Inverter.
Generalized thinking (Can also be stated as 'Rule of Thumb'), is that if the laptop uses LED backlighting, it does NOT use a screen Inverter.

I also feel into this line of thinking, since none of the LED back-lit laptops seemed to use a screen Inverter; that came to the shop.
I have found this to be a fallacy from on here,......FixYa.....
I have looked up two laptops using LED backlighting, and discovered they also used a screen Inverter.

Now I post LED backlighting may, or may not use a screen Inverter.
Seems when LED backlighting first came out, a screen Inverter was used on some models.
Also seems as the LED backlighting technology progressed, no screen Inverter is used.

90 PERCENT of the time, the fault for bad Backlighting can be attributed to a bad screen Inverter.
Of course, this IS IF the laptop uses a screen Inverter.

For a laptop with LED backlighting that does not use a screen Inverter, and backlighting is bad (Dim, or non-existant), the next hardware part in the diagnoses to replace, is the LCD screen.

I now await the information I asked for above.
Then we can diagnose together.

Regards,
joecoolvette

May 09, 2013 | Computers & Internet

1 Answer

Hi i have a dull screen on my dell inspiron 6000. i have replaced the inverter and replaced the backlight but still dull. is there anything else i can do?


Maybe your problem was the Video Card. Did you try an external monitor before you replaced the inverter and backlight? Try an external monitor and if it does the same thing then the Video Card is bad.

May 11, 2012 | Dell Inspiron 6000 Notebook

1 Answer

My hi grade laptop screen is not coming on


Try connecting this to an external monitor, see if it gives an image,if it does, you will need to check the inverter and back light of the laptop screen.
if it is the backlight at fault, you should see a faint image on the screen in a darkened room
If it is the inverter, the screen will remain black with no image.

Top replace the backlight, the screen itself must be replaced ( approx. cost £60.00 used)
Replacing the inverter approx cost £10.00.

neither are difficult jobs, but the cost may outweigh the value of the laptop if it is the backlight.

Knowing Hi-Grades though, the above points are academic. I'd be 90% certain that the graphics chip has failed ( no picture seen on external monitor). this is very common with hi-grade laptops, as the cooling to the graphics chip is very poor. Sadly in this case, you will need to replace the motherboard, the cost of which will certainly not be worth it

Jul 18, 2011 | Computers & Internet

1 Answer

BLANK SCREEN MAYBE THE VGA CARD? pLEASE HELP


Hi first thing to do here is to see where the problem lies. use a vga / monitor lead from your laptop to an external monitor or lcd/plasma tv in pc mode and by pressing fn and your monitor switch key think its f5 you should be able to determine if your screen is at fault, a common problem is the screens inverter or backlight bulb, if you manage to get an image on your external source then you its sure to be screen related wether it be the inverter/backlight/or even your internal screen lead this process can save money and time, you would then need to test the inverter to see if its this, the inverter is normally the cheaper option as the backlight can be a long tricky process.

I hope this has helped please rate :)

Feb 23, 2010 | HP Compaq Presario CQ50-110US Laptop

1 Answer

My laptops backlight turns off when i plug it in.it works fine when running off batt power


Maybe you select the save-power mode when using your Dell inspiron 1525 battery. So it auto turn off your backlight.

Jan 13, 2010 | Dell Inspiron 1525 Notebook

1 Answer

Hi, just turned on my acer aspire, and whilst power is going through it, the screen won't come on. is this a common problem?


Does the laptop appear to boot up but cannot see an image on the screen?
If this is the case the LCD screen maybe faulty.
You may have a defective CCFL backlight, it 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 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. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out.
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

Oct 07, 2009 | Acer Aspire 3680 Laptop

2 Answers

I have a Fujitsu Siemens Lifebook s7020 with no backlight. The display is showing everything but it's hard to see because there's no backlight. Everything is also fine with an external screen. I have a...


The Inverter board must be tested and eventually replaced. The inverter is the small board located at the base of display. This is connected to one side to the backlight lamp, to which supplies AC high voltage, and on the other side to motherboard, where receives DC voltage.

Inverter contacts to otherboard and to lamp must be tested , using a multimeter to read volts. The inverter is an AC board, and for safety reason the test must be done by a trained repairer.
If the inverter is OK check the contacts to motherboard and wiring harness to motherboard..

Also ensure that light is not just dimmer because energy save mode is on, or because the laptop is running on batteries.

Sep 07, 2009 | Fujitsu Siemens LifeBook S7020 Notebook

1 Answer

Hi, I have recieved a used laptop from a friend.It is an Acer Aspire 1690LCi ZL3. The unit powers on,battery is good,DVD drive opens but the screen is dead.Please help. Sam


A few things to try. First turn on the unit, and after it seems to have booted up (like at a windows login or something), take a flashlight and in a darkened room shine it on the screen. If you can see a picture, it means your backlight is out. Go on ebay or elsewhere online and look for an acer aspire 1690LCi backlight. Then open up your screen and replace it (there should be tutorials online for this). If you don't see an image, your screen maybe be out or have more serious problems (video card, LCD dead, etc.).

May 04, 2009 | Acer Aspire 1690 Notebook

2 Answers

Dark monitor on dell inspiron 6000


Chances are that you back light is out AKA new inverter board time.
Here is more info on it http://www.laptoprepair101.com/laptop/2007/01/31/replace-screen-inverter-fix-backlight/
And here is a link to a replacement
http://www.google.com/products?hl=en&safe=off&client=firefox-a&rls=org.mozilla:en-US:official&hs=cK0&resnum=0&q=inspiron%206000%20inverter&um=1&ie=UTF-8&sa=N&tab=wf

Dec 08, 2008 | Dell Inspiron 6000 Notebook

2 Answers

Nx9010 screen very dark


Hi,

Based on your post/description that the laptop still works using an external monitor, then perhaps what is at fault is your laptop's display. Chances are that it is the CCFLamp (Cold Cathode Florescent) that provides that backlighting or even the inverter that powers it. In some extreme case, it is the LCD display screen itself that is at fault. You can verify that it is the CCFLamp/Inverter by shining a flashlight at the darkened screen while the unit is operating. Some semblance of your desktop would be visible albeit too dark to be of use.

If indeed you have verified that it is the screen backlight that is at fault, it is, from a technical point of view reasonable to repair. Your concern would be local availability of the replacement part, cost of shipping (if otherwise) and local qualified service personnel for the job.

In some areas/regions, cost of repair would not exceed 100USD if it is the CCFLamp and/or the inverter.

Hope that this be of some help/idea. pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Nov 15, 2007 | HP NX9010 Notebook

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