Question about KDS Valiant 671DP Notebook

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LCD Display The LCD display is very very very dim to the point you can hardly see the boot screen or windows login screen. Everything was fine last time used....approx 2 months ago. Turned it on today and this is what I have. Any ideas? Thanks in advance.

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It might be the brightness in the screen have you tried that? any buttons on the labtop to ajust the brightness settings or it might be that the monitor is going bad.

Posted on Nov 25, 2006

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Posted on Jan 02, 2017

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Acer laptop display goes off after some second


Try booting into safe mode. Chances are that you have set the screen resolution and refresh rate to some value that the LCD cannot handle. That is why it works until Windows takes over. Once you are in Safe Mode you can get things under control.

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I have sony vaio vpceh25fd ,my screen was broken but was still working before i replaced it to a new one,after replasing the screen i am having a very dim display.even i tried the previous (broken lcd) its...


The dim display could be caused by a faulty inverter. The inverter supplies high voltage to the CCFL lamp that provides the back light to the LCD screen.

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

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My screen is very dim


boot to the BIOS (F2 at boot) and ensure that the LCD brightness is set to 8 and then reboot, if LCD is still dim, then, check the Control point system manager display settings and see if the LCD is dimmed there.
If no change, run diags Power + D at boot to run the LCD BIST test , if the 4 colored screens are DIM during the test, then the LCD has failed and needs repplacement.

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Your "F"keys are multi function. Look for the one with a picture of a monitor. Press the FN key adt the appropriate F key at the same time. You are probably in remote monitor mode. The F key is usually F5 or F8.

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Sony vaio vgn nr160e laptop - no display (intermittent). Attached monitor shows display fine and laptop works fine. Screen used to flicker intermittently (last few days).


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, 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: -
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NO DISPLAY ON TOSHIBA M35X-S149 LAPTOP


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the 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.
  • 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.

Apr 29, 2009 | Toshiba Satellite M35X-S149 Notebook

1 Answer

Acer Aspire 5610. LCD very dim all of a sudden.


That sounds just like an inverter problems. There is a slim chance the bulb could be a problem, but I would replace the inverter. It is not too hard to do, no soldering involved.

You have to remove the screw covers on the frame of the LCD frame, and then carefully pop off the frame. The inverter should be on the bottom center of the screen.

Be careful, there is a high voltage in that little baby. Just get the full numbers, and do a search on the internet and buy yourself a new inverter to replace the old one.

Apr 08, 2009 | Acer Aspire 5600 Series 5630-6951 Laptop

1 Answer

Display problem


If the laptop appears to boot up and the hard disk is spinning and the hard disk LED is flashing then the hard disk is OK.
Then the fault could be a faulty video cable or connector or CCFL lamp or inverter.
Try reseating the video cable/connector that connects to the motherboard first.
If this doesn't work then 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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3 Answers

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First of all, you have to check whether you can see video signal with surrounding light tilting the screen.
If you can see dim image, all you have to do is replace back-light inverter or fix it. Usually, the fuse is open and you can connect it by simple soldering.
If you can't see dim image, it is another problems.
Give it a try.

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Call tech support! That's why these people get paid. Sites like this wouldn't need to exist if they did their jobs correctly!

Mar 11, 2008 | IBM ThinkPad R32 2658 Notebook

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