Question about Lenovo ThinkPad X41 PC Notebook

1 Answer

My laptop screen is very dark

The backlight on my laptop does not start up until about 10-12 minutes at most after the computer starts up. Until then, I cannot see anything unless I lay the screen flat down on the table and view it from an angle.
Is there a driver I can install or something to fix this?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Lenovo Master
  • 5,568 Answers

I'm afraid you won't be able to correct this with a software patch.
Two things can happen relative to the LCD backlight which is your developing problem.
- If the fluorescent tube has either lost gas or darkened internally, it will have to be replaced. These cost ~$80-$100 US.
- The inverter that produces the high voltage may be dying from a bad electrolytic capacitor but this isn't likely to be repaired anywhere since many of these boards (if separate at all, some are,others not) have components on them placed by robots that aren't good candidates for manual repair. The inverter boards should be available from the manufacturer or an 'authorized' repair station but they may not want to sell it to you and may ask you to send it in to them. I can't give you an estimate on the potential repair cost and they may replace the entire top section because they can charge you more and spend less time on the unit.  If you can still see the LCD at an angle, it hasn't failed, but they may toss it anyhow.    

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

White screen appears at start up


A laptop suffering from a blank screen can fully impede all computer productivity, but fortunately there are a number of common problems that you can swiftly troubleshoot for in your own home, even if you have no prior computer troubleshooting experience. The power adapter, monitor brightness settings, inverter cable or otherwise may all be possible causes for your screen's problems, but all can be repaired with only a Phillips screwdriver and a potential replacement screen.

Check the power adapter of the laptop and ensure that it is still properly plugged into the back of the machine. Check the monitor brightness settings for your screen. There are dedicated monitor brightness keys on the keyboard, typically located just above the numeric keys. If the brightness has accidentally been turned all the way down, this will result in a screen that appears completely dark or blank. Turn the brightness up. Open up your display to check on the backlight's functioning. Remove the screws that run around the bezel, or perimeter, of your laptop's screen. Use a Phillips screwdriver. Pull the bezel carefully off the display, starting at one corner and working around the bezel until it is completely detached. Find the inverter board, which will now be visible with the bezel removed. It lies at the bottom of the screen. A black inverter cable connects into this board via a connector that lies atop the board. This cable is instrumental to the operation of the screen's backlight, so if the cable has come loose, then the backlight will fail to function and the screen will be dark and blank. Reconnect the inverter cable into the connector by inserting it and then snapping the connector down into the flat, "locked" position, which will put it parallel to the inverter board. Consider full replacement of the screen if the inverter cable fix does not restore the screen's proper operating state. Ensure the inverter cable is disconnected, then remove the metal brackets on either side of the screen. These brackets are held in place with two screws that must be removed with your Phillips screwdriver. Pull the laptop's screen slowly up and out. Slide in the replacement screen, then restore the screen brackets and reconnect the inverter cable. Slide the bezel back into place over the display and replace the bezel screws. Hope this helps

b>

Dec 10, 2012 | PC Laptops

1 Answer

Laptop screen won't come on


The problem could be as simple as the hinge switch that switched off the backlight when you close the cover. If the computer seems to start up, but you just can't see anything, wait until the unit has had enough time to fully come up to either the login screen or the desktop (however it's configured to start). Look VERY carefully at the dark scrren to see if you can just make out the login graphics or desktop icons. If you can, then the unit has booted up ok, but your LCD backlighting is not working. This could be because the backlight lamp is defective, or its power supply may be defective, or the little switch back near the hinge of the case is stuck or defective. Check this first.

Jan 15, 2012 | PC Laptops

2 Answers

My emachine e627 screen is dark and I cannot use the computer. At this point I do not know what to do to be able to get it working again. This happens every time I turn it on, I was using it and all the...


Try (on the bottom of the laptop) removing the door to the RAM, and pulling one stick out at a time, than starting it, and than the other stick, and starting it. If you still have a black screen, than the motherboard has gone.

May 22, 2011 | eMachines E620-5885 Notebook

1 Answer

How to replace backlight on compaq 2570us laptop


What is wrong with the backlight? The computer screen is just dark? I would start with the inverter. The inverter is usually the problem when the screen goes dark but people think it is the backlight. The backlight alone is very hard to change too. Go with the inverter, I would bet that is the issue.

Apr 02, 2010 | Compaq Presario 2570US Notebook

1 Answer

My brightness control does not work just turned on and can not hardly see anything it is up and running what now


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 | Dell Inspiron 1545 Notebook

1 Answer

Screen is dark but icons are barley visible.


What you have is an inverter failure most likely. The inverter takes the AC adapter voltage and converts it to high voltage AC for the backlight bulb. Backlight bulbs rarely fail but the inverters do. Ebay has inverters for around 15-20 bucks. The inverter sits under the lcd panel behind the screen bezel. In most cases, removing the bezel is all you need to do to change the inverter out. Below is a link to the service manual for that model.

When you click on the link go to page 4-61, this is the start of the lcd disassembly. I thing just 4 screws need to be removed and then take your finger nails and pry off the bezel in a small area and work your way around the screen until the bezel comes loose. When replacing the bezel always start at the bottom between the hinges and work your way up and around.

http://tim.id.au/laptops/toshiba/satellite%20m50.pdf

Jan 18, 2010 | Toshiba Satellite M55-S135 Notebook

3 Answers

Laptop LCD display problem


The backlight is the light bult that illuminates the screen. Before it finally goes out completely it will turn your screen a pink color on startup (and then usually become brighter and the pink fades). It is also possible that the backlight, also called a Cold Cathode Flourescent Light, CCFL, died an immediate death. But usually they take a while and signal with the "PINKNESS" first. If you found that your computer is working just fine connected to an external monitor (and you moved the base of your laptop around while connected to the monitor to be sure and left the computer on for a long time) then you have verified that the screen is the problem. It is usually two things: (1) the inverter, a circuit board that increases the voltage to supply the LCD which eats around 700 volts (yeah baby); or (2) the backlight itself. The first problem is a relatively easy and inexpensive fix. You can find how to replace an inverter by downloading the Hardware Maintenance Manual for the T40, T41, etc., from IBM/Lenovo's site. Replacing the backlight itself, a bulb that is like a strand of speghetti and even more delicate, is a tougher job. I would suggest purchasing a replacement screen in that event rather than replacing the backlight yourself. (The HMM probably does not show you how to replace the backlight/CCFL as it is a potentially dangerous job.) That suggestion assumes you can find a cost-effective replacement screen and do not mind opening the TP and putting the new screen in. At least look at the HMM to see what is involved. Good luck.

Apr 07, 2009 | IBM ThinkPad T42 Notebook

1 Answer

Laptop screen is very dark even though harddrive is running fine


There are several reasons this could be happening but lets try adjusting your brightness/contrast settings.

Go to; Start Menu > Control Panel > Power Options
You should see something like this.
http://i298.photobucket.com/albums/mm260/mshockey89/Tech%20Support/Poweroptions.jpg

On the left hand side of the screen select Adjust the Display Brightness. You should see somthing like this.
http://i298.photobucket.com/albums/mm260/mshockey89/Tech%20Support/EditplanSetting.jpg

Now just play with the brightness settings until you get the desired effect.

Also, make sure you don't have the brightness settings too low for your off battery settings. This could be a reason as to why your having this issue. If this doesn't fix the problem, let me know.

Jan 03, 2009 | Dell Inspiron 6000 Notebook

1 Answer

HP Pavilion, Screen working, but extremely dark!


Hi,
As per your description, I find that the issue is with the LCD Backlight which is also called as LCD Inverter which lights up the LCD to show us the Display on the LCD Display.
If this Backlight is gone bad, you will be barely able to see the Display on the LCD.
Coming to the Noise you had mentioned above can be from the Cooling fans of the Notebook which will be spinning at high speed when the Notebook starts and will reduce gradually after few minutes.
I recommend you to try cleaning the Cooling fan vents using any Vacuum Cleaner or Air Blower.
I recommend you to contact any nearest HP Authorized Service Center and get the LCD Backlight replaced.
Hope this helps....

Jul 21, 2008 | HP Pavilion dv6000z Notebook

Not finding what you are looking for?
Lenovo ThinkPad X41 PC Notebook Logo

91 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lenovo PC Laptops Experts

micky dee

Level 3 Expert

2630 Answers

Jay Seifried

Level 1 Expert

51 Answers

john smith

Level 2 Expert

366 Answers

Are you a Lenovo PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...