Question about IBM ThinkPad R40 2897 Notebook

1 Answer

Laptop's light is turning off!

Hello! I have a IBM R40 laptop. Unexpectedly, the comp screen goes VERY DARK...to the point where I cannot even see the cursor. It's almost as if its BLACK, but not pitch black. There is some visibility, but i cannot see where the cursor is. PLEASE HELp! Do i need to change the light bulb or something? The comp runs normally for only 5 mins when i turn it on, then after 5 mins, the comp screen goes dark and i cannot see anything...but the comp is still ON.

PLS HELP!

Posted by on

  • Steve Rand
    Steve Rand May 11, 2010

    While on battery or mains? or both?

×

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.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,028 Answers

This is going to be a problem with either the screen inverter, or the screen backlight. I would recommend have it diagnosed first to see which it is. You can test this yourself if you have an ohm meter, and a little technical know how.You will need to pull the screen bezel (the plastic piece around the front of the screen), the are screws hidden under the small round plastic sticky tabs on the bezel. Once you've removed the screws the bezel will snap off. Get it started at one side and work it up the rest of the way around, be careful not to break it ar the corners when lifting it off. Once the bezel is off you will see the inverter at the base of the screen. Power down the machine and disconnect the lead that goes to the screen. The power going into the inverter is very low, the inverter boosts the power back up to what the screen needs to work, so the power on the screen end will be significantly higher than the motherboard end. The voltage range differs machine to machine, so I can't tell you what it should be exactly, only that if it's the same or slightly higher from end to end, then it's bad. Now, inverters can be changed out, but backlight are part of the screen and cannot be change out. If it's a bad backlight, then the entire screen will need replaced.

Posted on Aug 22, 2008

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

IBM R40 laptop will not start.


remove the battery and adapter. press power button for 30 sec. then connect the adapter. press power button. if this didnt work. you need to ask for an help of a local tech to check for the video card and cable.

Mar 22, 2010 | IBM ThinkPad R40 2722 Notebook

1 Answer

The display on my ibm thinkpad r40 is black after initial dim ibm screen. External monitor works fine though. This happened immediately after I used my ibm with a projector this morning? Fn F7 does not...


The problem youve discribed does seem to point to your back light has failed on the laptops lcd display, i dont know exactly how this would accure just using a projector though, go into bios again and try loading factory settings.

This problem could also be the inverter if you cant make out even a slight image on the screen.

let me know what happens. thanks

Jan 19, 2010 | IBM ThinkPad R40 2681

1 Answer

Is there an adaptor that goes between the


yes some taptop use adaptor and don't use adaptor.

Jan 11, 2010 | IBM ThinkPad R40 2722 Notebook

1 Answer

IBM R40 Screen Problems


I think you have an inverter board thats just about dead. It's located in the screens plastic housing at the bottom of the screen just above the keyboard. It's about 4 inches long and a half inch wide.There's just one little cable connecting it. But you have to take your screen apart to get to it. It's easy to replace and relatively inexpensive but it does require a little disassembly skill.
Also ,I will need the exact part number from the bottom of your laptop. There are several different R 40 models, and 2 different screen sizes.

Apr 14, 2009 | IBM 11P836402 for ThinkPad R40 Monitor

1 Answer

Problem with ibm thinkpad r40


The IBM beep code error 1 long 2 short beeps means there is a video card fault. Reseat your RAM because the video card uses some of the RAM. If it doesn't work then the video chip on the motherboard is faulty, the only way to fix is to replace the motherboard - this may not be a cost effective solution.
Connecting an external monitor to the laptop won't work because the video card also sends data to the video port.

Apr 06, 2009 | IBM ThinkPad R40 2722 Notebook

1 Answer

The display screen has turned black


When you connected the external monitor thto the laptop did it display?

If so then you have to reset the monitor port. Hold down the function key and find the FKEY that shows a picture of a monitor. Press that until you get the laptop screen back.

Typical use is:
  • 1 press = external monitor
  • 2 presses = laptop and dual monitor
  • 3 presses = just the laptop screen

Dec 12, 2008 | IBM ThinkPad R40 2722 Notebook

1 Answer

When i turn on my laptop, the screen is blank


It seems to be u have problem with ur RAM ..Try to change it

Nov 29, 2008 | IBM ThinkPad R40 2722 Notebook

1 Answer

IBM Thinkpad R31


It looks like hardware problem.

Nov 08, 2008 | IBM ThinkPad R40 2722 Notebook

1 Answer

Hi vcan i ask you a question on a r40 problem


This could be a battery problem. Remove the battery and start on the power supply only. If this doesn't work, then check the power supply with an ohm meter to see if it's getting the proper output to the machine. If the supply checks good, then I'm afraid that you have a problem component on the motherboard, and will need to have it professionally diagnosed in order to track down the exact problem component.

Aug 13, 2008 | IBM ThinkPad R40 2722 Notebook

1 Answer

R40 screen is dead


Since a used R40 will be in the neighborhood of $300, a $100 or less for the screen might not be too bad of a price. Without the screen, you have a $330 paper weight. With the replacement screen, you have a working computer. And that would cost you $200 less than buying a replacement R40.
Hopefully this line of thought will help you make the decision.
R-

Nov 05, 2007 | IBM ThinkPad R40 2897 Notebook

Not finding what you are looking for?
IBM ThinkPad R40 2897 Notebook Logo

102 people viewed this question

Ask a Question

Usually answered in minutes!

Top IBM Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18381 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...