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Laptop lcd display

LCD Display is blank and dark even though laptop is functioning.

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  • tegarcus Nov 07, 2007

    same problem, in my case is the inverter, allready changed but after 10 minutes or so it turns off automatically for protection,,, so still getting more or less power than it should,,, have to solve it yet, the point is that there is no room enough to install a regular inverter, just like the scanners have,,, everything fits in so tight...

  • satyav Nov 17, 2007

    LCD Display goes blank sometimes when the Power is disconnected or Google Earth is started(Display drivers) and sometimes when I start playing a video fullscreen with VLC player

  • Aliens Nov 29, 2007

    Hi can some one help me out what to do. When I turn on my nc6000 i can hear the fan running no lights on the laptop shows up. No power lights, no hdd lights, no wireless nothing. HDD is working fine i tested on another nc6000 so what can be done here.

  • Anonymous Dec 26, 2007

    I want to replace my avertec screen? How do I do it? Thanks Ken

  • ASL Ivan Jan 27, 2008

    My display screen functions except that the backlight does not go on. I can hardly see what is on the screen. The only thing I tried is to reboot and that didn't help. Does anybody know if it is the screen, or if it could be a poor connection? I don't want to spend for a new screen if that is not the problem.

  • pimpson Jan 28, 2008

    same thing dark screen but with a lamp behind me i can see it

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I fixed it! My machine is a Toshiba Satelite A-105. The screen worked but I could hardly see it because of a very dim backlight. I got to the inverter and tested it with a regular voltage tester. No significant voltage. I bought an inverter on ebay and replaced it myself. It's not to hard to do. I had to take the front screen trim off. There are screws behind the ruber tabs, just pull of the rubber tabs then remove the screws, then work the frame loose by pulling and prying. This can be a bit of a challenge. Once you have the trim off, the inverter is bellow the screen. It has a multy wire plug going into it and a two wire plug coming out of it going to the bulb.

Posted on Feb 22, 2008

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Hey try adjusting ur lcd brightness n contrast frm control pannel menu.... i hope ur prblm will b solved.. or tk out ur memory n reinsert it.. thn c.. check it out..

Posted on Feb 21, 2008

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TOSHIBA SATELLITE M35 M35X NO VIDEO FIX

Just fixed three M35 M35X in a row with the same problem, guys. I couldnt find anything online that gave me ANY CLUE. Video card is bad, right? Wrong. PASS IT ON TO OTHER BLOGS PLEASE, I will get it started here.
Heres the fix:
This requires access to the cpu and heatsink, remove the keyboard and palmrest to access the motherboard, I think you have to remove the screen too. Remove the heatsink and cpu. Reseat the cpu, heres the kicker, press firmly on the center of the cpu while turning the locking screw. Pressing the cpu hard, allows the locking mechinism to get a good bite. Turn the locking screw hard into the end of the turn. Hook up the heatsink and set it back on top of the cpu. Press down on the heatsink over the cpu, fairly strong pressure.
Now test the motherboard, use just cpu, heatsink, memory, power button board and cable and external monitor, you can use your screen instead by just hooking up the cable to motherboard, leave the screen laying flat on the table. Now push the power button with one hand and the other is still applying pressure to the heatsink, no you dont need to screw it down yet. Keep reseating the cpu with varying degrees of pressure if you dont get it go the first time.
The trick will be to get it all assembled with the same results.
There seems to be a problem with the cpu seating correctly, it must come loose and the laptops exhibit the symtoms of no video. It might even be neccessary to insert a wafer thin piece of copper or something in between the cpu and heatsink if the heatsink doesnt apply enough pressure to cpu to keep it seated deep enough to run the computer.
Am I a genius or what, lol. I am not, but I am sure surprised no one else has posted this info over the years.
Hope this helps someone with this frustrating problem with the M35 M35x and many more models.

Posted on Dec 16, 2007

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On my Evo N610c you could see the initial boot screen and then the display backlight would switch off. It ran fine on an external monitor, but no amount of pressing the key combo to switch display outputs would persuade it to use the built-in panel.

In the end I discovered it was the switch in the front of the case that detects when then lid is closed. Using a flat bladed screwdriver to actuate the switch a few times was enough to bring the display back on-line. The switch in question is in the hole just below and to the left of the touchpad. Simply inserting a screwdriver is enough to make/break the contacts. I suspect it gets filled with grime over time.

Posted on Nov 19, 2007

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If your computer is still under warranty, go to pcrepair.toshiba.com

Posted on Oct 15, 2007

What might also be the problem is try adjusting moniter brightnesss(blue function key+F7/F8). If brightness does not improve, report the problem to HP.

Posted on Oct 14, 2007

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This could be a faulty Backlight or Inverter. These are both quite difficult to repair if you dont do them regularly. Any decent Laptop Repair Shop will be able to fix this for you.

Posted on Aug 27, 2007

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Posted on Jan 02, 2017

muscularmod
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SOURCE: laptop lcd display

sounds like your screen went out, if you need to access whats on your laptop real soon try hooking it up to a desktop monitor via rgb cavble.

Posted on Dec 13, 2007

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2 Answers

Toshiba Satellite A105 Display


If you've replaced the LCD Panel already, then chances are good, the failing part may be the FLR inverter. It's a thin little chip about 3 or 4 inches in length that bridges the connection between the LCD and the motherboard. It's location varies from computer to computer though, so you may have to check with manufacturer documentation. They're not too terribly expensive to replace though, much cheaper than the LCD panel, anyways.

May 09, 2009 | Toshiba Satellite A105-S4004 Notebook

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Blank Display, using exernal monitor, can see display info w/flashlight, display flashes light at startup


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.

May 03, 2009 | Toshiba Satellite A135-S4407 Notebook

1 Answer

Hp laptop screen blinks during use


You could have a faulty inverter but
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 12, 2009 | HP Pavilion dv6000z Notebook

1 Answer

Display went dark


The backlighting is provided via the LCD inverter as you described.

Dec 08, 2008 | HP Pavilion dv1000 Notebook

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Screen wont light up



Try connecting an external monitor to the Dell Inspiron 2200. If the monitor display is fine, then your laptop’s LCD display panel is defective. If the monitor display is dark, problem is with either the video card or motherboard located inside your laptop.
Here’s a link to disassemble the LCD unit: http://support.dell.com/support/edocs/systems/ins2200/en/SM/display.htm#1084976



Your responses are intended to improve the level of service provided. Please show your appreciation by rating your experience.
Thank You.

Nov 18, 2008 | Dell Inspiron 2200 Notebook

2 Answers

LCD Display Blank


I have a sony cybershot DSC-S650, the LCD was very dark and could not see anything except if I pointed it at a bright object, everything else worked ok. I could take pictures but could barely see them in playback as well.

I took it to Sony authorised repair outlet and was told the CCD was damaged, they charged me USD $55 to repair it (in Quito, Ecuador)

Jul 31, 2008 | HP Photosmart R607 Digital Camera

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Acer Travelmate 6291 LCD monitor problem


Hi,

Your concern is a typical problem with LCD displays/monitors. There could possibly be three (3) reasons why it is behaving as you have posted.
1. Backlight/Inverter problem;
2. LCD panel problem;
3. Video card problem.

You can do initial diagnosis by:
a. connect the laptop to an external monitor. Using the Fn + F? keys, activate the external monitor to be the default display. If it works, you have eliminated the possibility of the video card having a problem. If it likewise did not display anything or blanks out after sometime, then you have just confirmed that it is the video card that is a problem.

If you have ruled out the video card (using above procedure), you can proceed determining if it is an LCD panel problem or backlight/inverter problem.

To determine if it is a backlight/inverter problem, run the laptop normally even without a display. Let it boot and run through its startup sequence even if you can not see anything. Using a flashlight, shine a light obliquely to the face of the LCD display. if you can see some semblance of your desktop albeit dark, then you have just confirmed that it is the backlight/inverter. If even with the aid of a flashlight, the display s completely blank, then it is possible that the LCD display panel is defective. In some cases it is the flexible flat cable that is at fault.

With any of the aforementioned possible problems, opening the unit is required. This would need familiarity with electronic components and circuitry, use of a DVM and perhaps even a soldering iron. Should you not be comfortable doing this, it would probably be to your best advantage to seek the services of a qualifiedly professional.

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

Good luck and kind regards.

Jan 22, 2008 | Computers & Internet

2 Answers

Monitor blank when startup, have to restart several times


The problem is probably caused by the LCD's inverter.
I had problems like yours with some Acer laptops and had to replace the LCD's inverter.

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4 Answers

Laptop lcd display


sounds like your screen went out, if you need to access whats on your laptop real soon try hooking it up to a desktop monitor via rgb cavble.

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Lcd TV display is dark


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