Question about HP Compaq nc6120 Notebook

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Nc6120 LCD display remains dark, though picture can be seen. Looks like backlight display is broken. Any ideas to fix it?

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If you have to ask HOW to disassemble your laptop, I strongly suggest that you take the laptop, and its power-supply, to a qualified technician, for proper & safe trouble-shooting and replacement, if necessary, of the "inverter".

Posted on Sep 29, 2010

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Sometimes when I start my HP pavillion dv5 2135dx laptop the screen is dark even though the computer is up and running. It may take several shutdowns and startups for the screen to finally come on. Other...


If you can very vaguely see the icons or pictures displayed on the screen even though dark it maybe either a problem with your inverter or Lcd backlight. If no images are seen even though you look carefully then it may be the onboard vga controller. It maybe worth checking to see if your laptop is under warranty with Hp see link.

h10025.www1.hp.com/ewfrf/wc/weInput

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Feb 27, 2011 | Computers & Internet

1 Answer

Power light comes on but no picture


Try to check if the monitor displays anything - it would be very dark so experiment with angles/lighting. If you see picture it means that backlight is broken. Broken backlight can be caused by:
  1. Burnt "bulbs" (cathodes or LEDs) - If this is an LED backlit display then this scenario is highly unlikely.
  2. Broken inverter (most likely)
In both cases you need to have it repaired by a technician. If this is a relatively new display this will be cheaper than buying a new one.

Oct 12, 2009 | Samsung SyncMaster 940T 19" LCD Monitor

1 Answer

The screen is not turning on even though the rest of the laptop is working. how do i fix this?


You may have a 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

Aug 16, 2009 | Compaq Computers & Internet

1 Answer

Acer screen looks dark?


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 23, 2009 | Acer Aspire 5315 Notebook

1 Answer

Dark monitor screen with hidden display in the dark.


You most likely have a 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 07, 2009 | Acer Aspire 5040 Notebook

1 Answer

The display has dimmed, and looks washed out (faded)


You most likely have a 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 05, 2009 | Toshiba Satellite 4010CDS Notebook

1 Answer

Acer Laptop Dark Screen


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 | Acer Aspire 3680 Laptop

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Nintendo ds lite dark top LCD screen after replacement.


Press down on on the plastic (not the and press down on the buttons) until it remains lit

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My LCD screen went dark


Well looks like you sussed the problem - no backlight Can it be fixed? -I doubt it, unless it is failry new and warranty comes into play Give the Panasonic website Techincal Support Team a look E-mail the problem

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Faceplate display backlight out


Your display lights are burnt out. This is a common problem. It is covered under warranty. Send it to Sony for service. Anyway, under the Sony faceplate there are two small, different colored leds which control the color. The light is aparently transfered through pieces of clear plastic (best example I can think of is the piece of plastic over the led in a household smoke alram)to most of the buttons and the backlighting. If your display has burnt out you may just be able to swap the leds for new ones. As for the intermittent green could it just be a faulty solder on the board.

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