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My backlight on laptop monitor is very dim. i plugged into a external monitor and it works fine...how do i go about fixing this??

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  • cassiem1272 Mar 12, 2011

    acer extensa 4420-5963 I've tried adjusting the brightness it's not that. The screen is very dim and dark

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You should describe which brand of laptop which series it is.

For an acer laptop you can try pressing

FN + "->"

to increase the brightness

Posted on Mar 11, 2011

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Most LCDs have the backlight built right into the LCD. A little more information is needed, but chances are you will be replacing your LCD.

Posted on Mar 11, 2011

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1 Answer

I have a Compaq presario cq60. when i turn it on the screen is very dim. can c it with flashlight. works fine just very dim. hooked it up to external monitor it works perfectly. what is the problem he


If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Feb 06, 2013 | Computers & Internet

1 Answer

Dim screen


sounds like your backlight inverter or lamp has failed. It is worth fixing if you can find someone to do it for a reasonable price. It isn't something I would recommend trying yourself unless you have laptop repair experience. If you just want to purchase a new laptop, you can put your old one on Ebay or Craigslist. I can assure you someone will buy it as is.

Sep 24, 2012 | Sony VAIO VPC-EH11FX/B Laptop Black

1 Answer

I have a Gateway 450ROG with very dim video on the display, I can hook up an external monitor and the video on the external monitor is fine but still very dimvideo on the monitor of the laptop. You can...


Hello !

Since an external monitor works, it is the display's backlight or inverter board.

If you were experiencing discoloration in the screen (pinkish lower light hues) before it failed, that would indicate a CCFL backlight issue. If the screen suddenly went dim on you rather than a slow degradation the inverter would be indicated.

In either case, a technician in your area should be able to help. Evaluate to see if the repair is cost-effective.

Hope this helps.

Oct 26, 2010 | Gateway 450ROG Notebook

1 Answer

DIM BACKLIGHT TOSHIBA L305D-S5924 LAPTOP


There are also another reason , the Back light lamp might be damaged also!

May 11, 2010 | Toshiba Satellite L305D-S5895 Notebook

2 Answers

My Screen will not turn on, even when it is fully charged, plugged in, etc. The computer does power on, but the screen is completely blank, (not even lit, but black) help!


First make sure that this is a LCD problem to do this connect your laptop to an external monitor, so that it is confirmed that your laptop itself is fine.
If connecting the laptop to an external monitor doesn't work it would mean there is something wrong in your system. Most common problem is dislodged RAM, remove your ram and reconnect it properly.
If your system is working fine on the external monitor then go near to your LCD screen when laptop is turned on and look very closely on the screen if you see the anything on it but very dim, it would mean that you have a faulty backlight, the backlight itself is faulty or the inverter.
For further assistance please feel free to contact me.

Apr 01, 2010 | Everex StepNote NC1500 Notebook

3 Answers

VERY Dim screen after a drop


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.

Mar 24, 2010 | Sony VAIO VGN-NS190J/S Notebook PC

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

LCD dim.


If you have replaced the screen and the inverter, about the only thing left is the flexible cable from the monitor to the video card. I take it that the Fn+F8 makes no difference?

May 23, 2009 | Dell Latitude L400 Notebook

1 Answer

Lcd screen black on laptop. External monitor works.


Defective CCFL backlight may has 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.
  • 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 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.

Mar 31, 2009 | Dell Precision M60 Notebook

1 Answer

Just replaced a cracked screen in a toshiba a105-s4074....when i turn it on i can barely see the screen....it is very dim.....when i plug the old cracked 1 up it works fine....any suggestions?


If you see a dim image on the LCD screen it means you have a backlight problem.
Connect an external monitor to the laptop and power it up, if you see a clear image on an external monitor, this means your video card is OK.

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.

Mar 10, 2009 | Toshiba Satellite A105-S4074 Notebook PC

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