Question about IBM ThinkPad T41 Notebook

1 Answer

My t41 ibm thinkpad screen goes black three to ten minutes after startup. I have replaced the lcd inverter card twice with the same results. Please tell me what my next step should be? Thank,Charles.

Posted by on

  • phil_NHCT May 11, 2010

    Charles,

    what make and model laptop?
    what operating system?

    does this happen when you connect to an external monitor?
    Phil



×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 526 Answers

Could it be a screen saver, or the unit is going into hibernation.

Posted on Apr 15, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

T42p display lights for a couple of minutes through startup then goes dark


But fan still runs, and it sounds like the harddrive is spinning?

Diagnose.

Do you have a VGA monitor available?
You can use a CRT type, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

http://en.wikipedia.org/wiki/VGA_connector

1) Laptop OFF, monitor OFF, connect the VGA monitor cable to the left side of the ThinkPad T42. (DisplayPort)

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By factory default, the display should show on the external VGA monitor.
If not;

There are at least three display options available;
1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY.

Press, and hold down on the Fn key, and at the same time tap once on the F7 key. The F7 key is the Display Toggle-Over key.

3) Good display on external monitor?
Problem is the video cable, or inside the Display Assembly.

Since the display goes dark after a couple of minutes, I can tell you the problem is the screen Inverter, or Backlight.
(Inside the Display Assembly)

90 PERCENT OF THE TIME the fault is a bad screen Inverter.

Primer:
An LCD screen cannot produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, or a series of LED's.
(Light Emitting Diode)

The Lenovo ThinkPad T42 series of Notebook PC's, uses a single CCFL for a Backlight,

http://www.screentekinc.com/IBM__ThinkPad__T42-series-laptops-lcd-screens.shtml

A CCFL is a Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

[Average thickness is 2mm. That is a little larger than 1/16th of an Inch.
Average length is almost as long, as the LCD screen is in height ]

A screen Inverter converts the power from the laptop, for the LCD screen, and Backlight.

(Older versions of backlighting that used a series of LED's, used a screen Inverter. Newer versions do not. For these replace the LCD screen)

A screen Inverter and an LCD screen are a MATCHED unit. Make sure you get the correct screen Inverter, or LCD screen, when buying.

Primer over.

One example of a screen Inverter for the T42's,

http://battery-adapter.com/product_info.php/products_id/3381/vThinkpad+T42

Pictorial guide for replacing a screen Inverter, in a ThinkPad T42 series of Notebook PC,

http://www.insidemylaptop.com/replace-screen-inverter-in-ibm-thinkpad-t40-t40p-t41-t41p-t42-t42p-laptops/

http://www.laptoprepair101.com/laptop/2007/01/31/replace-screen-inverter-fix-backlight/

Lenovo Support link to the Hardware Maintenance Manual, for the ThinkPad T42 series of Notebook PC's,
(HMM. It is a Service Manual),

http://support.lenovo.com/en_US/guides-and-manuals/default.page?

Click on the bold black subheading -
Hardware maintenance manuals
Then click on the blue -> [+] Click for files

It is a PDF file.
It may take up to 30 seconds before the first page comes up.

For additional questions please post in a Comment.
Regards,
joecoolvette

Jul 29, 2012 | Lenovo ThinkPad T42 Notebook

1 Answer

I have a T41 thinkpad laptop. Its screen goes


If your computer is still in warranty, you can call IBM support at 1-800-426-7378. If the system is already out of warranty and if you want to purchase the part (motherboard), you may call the IBM Parts Department at 1-800-388-7080 or 1-866-428-4465 (then select option 3).

Jun 07, 2010 | IBM Thinkpad T41 Motherboard - 39T5430

1 Answer

My IBM Thinkpad T41 LCD screen blank when power is ON.Please assist me.This happen because I did not use my laptop for about 6 months.


Hi, This issue is clearly hardware and might be related to 3 part, Inverter card, LCD cable or LCD Panel ( Or systemboard, just to make sure try with an external display if the issue reproduce it's systemboard/graphic card related, if not LCD related ). If you are still entitled to warranty then this hardware failure is covered by the terms. You should have the 3 parts stated below replaced as it s a common issue with Thinkpads.
In case you are out of warranty cover you still can try to subscribe to a warranty extension, you can check on www.lenovo.com , otherwise you might want to order theses parts on a website such as ebay. To swap the pieces requires quiet advanced skills as you have to take down the whole computer, obviously LCD Panel included. Unfortunalty this is hardware related, not much you can do... I hope this help ! Thanks and have a nice day ! J -

Jan 07, 2010 | IBM ThinkPad T41 Notebook

1 Answer

My screens works for about 10 or 15 minutes and then goes out...


You could have a faulty inverter or a CCFL lamp, 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.

Aug 03, 2009 | HP Pavilion dv2715nr 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

IBM thinkpad t41 screen goes blank after being used for about 5 minutes. Could it be a motherboard issue?


If the machine keeps running it might be your inverter or your backlight for your lcd screen. Next time it happens take a flashlight and hold it at an angle near your screen. I f you can see an image it's your screen that's having the problem. If the laptop is shutting down after 5 mins it could be a heat issue. Make sure all the vents are clear and the fan is running. If all those things are working then it could be your motherboard.

Mar 26, 2009 | IBM ThinkPad i Series 1412i Notebook

2 Answers

No backlight


with a multimeter verify if you have power in inverter, if not, try to connect the inverter to another power supply for testing.

Jan 06, 2009 | IBM ThinkPad T41 Notebook

1 Answer

IBM Laptop A2629 LCD Problem


sounds like your video is going out wheather its your card or lcd not sure but kinda sounds like the screen

Dec 24, 2008 | IBM ThinkPad A20 2629 Notebook

1 Answer

Black screen


there three issues with think pads that are common for this issue

1 bad inverter board
2 bad ccfl lamp in the lcd screen
3 bad video chip or other issue on the mother board

Inverters are not hard to replace and can be done by most people with patience and soft touch
ccfl bulbs require service techs with specialized skills to replace them, the lcd has to e taken apart or completely replaced
motherboards or video cards are much more complex issues and need service centers or techs with the requisite skills

Dec 10, 2008 | IBM ThinkPad T42 Notebook

1 Answer

IBM T41 Hinge Replacement


Repair4Laptop: Repairing of Laptop and Notebook LCD Displays IBM ThinkPad T41: Screen inverter replacement guide, explaining how to fix a laptop backlight problem. ... Samsung X10: (An illustrated display hinge replacement guide)

Good Luck ...........Please dont for get to Vote, Thank You.

Dec 18, 2007 | IBM ThinkPad T41 Notebook

Not finding what you are looking for?
IBM ThinkPad T41 Notebook Logo

379 people viewed this question

Ask a Question

Usually answered in minutes!

Top IBM Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18394 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Computer Links

Level 3 Expert

2385 Answers

Are you an IBM Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...