Question about IBM ThinkPad T41 Notebook

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IBM thinkpad T41 video problem

Hello, I saw a recent post where you talked about t41's having loose video chips... My screen has randomly been going blank... mostly when being moved... but the test (pressing down on the machine to try to get the chip back in there) hasn't worked... so this is inconclusive. Any other way for me to test whether or not that is the problem I'm having?

Thanks a great deal

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Yeah, the pushing down thing is a diagnostic that is not totally diffinative, in itself. Another trick is to hold the laptop down and firmly flex the left front corner of the keyboard straight up. If the display comes back, or tries to come back, then you probably have a chip with loose solder connections. Geekman gave you some good advice and you should look into what he suggested, as that is certainly a possibility.
Try those things and get back to me.
Have a superday!
Ron

Posted on Dec 09, 2008

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Connect your laptop to an external monitor, you will need to press the Fn + one of the Function keys that control switching the video to the external video port and the LCD screen.
If the video on the external monitor is perfect then the video chip is OK and the fault is either a faulty LCD or LCD connectors on the motherboard is not making proper electrical contact. You can pull apart the laptop and reseat these connectors, there are usually two connectors.

Posted on Dec 08, 2008

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I want to remove bios password from IBM thinkpad t41


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Hi,

The IBM Thinkpad has a very strong security system.

If you are seeing a lock symbol when booting then somebody has set the supervisor password. If you can't remember it or guess it (try "password", "admin", "pass", etc) then you need to find the person that set the supervisor password.

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Hello my laptop t41 power is not even flash but the adapter is working,am technician and i have troubleshoot allot.


I concur with what Diegotech stated.

To iterate further;

1) The DC Power Jack (DC IN), may have cracked solder joint/s on the motherboard connector, (Female), where the DC Power Jack plugs in.

Resolder

2) The DC Power Jack may be broken.
Center Pin mount, and/or body of DC Power Jack, and/or Outer Shell mount.

Replace DC Power Jack.

3) Wires from the DC Power jack plug to the female connector on the motherboard, may be bad.

Replace DC Power Jack.

Two examples, of a place to buy an IBM ThinkPad T41 DC Power Jack,

1) http://www.buy.com/prod/dc-power-jack-connector-socket-for-ibm-thinkpad-t40-t41-t42-r50-r51-r52/q/sellerid/23962916/loc/101/215782035.html

2) http://www.machinaelectronics.com/store/buypart/IBM_Thinkpad_T41/DC-P001

Past this point it's a bad DC sensor on the motherboard.

Replace motherboard.

IBM ThinkPad T41 Service Manual, (Free),

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-ibmlenovo

On this page go down to the 8th line.
The one that starts with > ThinkPad T20.

Go across, and click on > T41

Takes approximately 2 seconds to see the first page, and additional time to fully download.

Page 142 for 14.1 inch LCD screen
Page 151 for 15 inch LCD screen

(PDF file page number box at top)

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IBM is very sensitive i have the same problem before check your processor fan and RAM. specially RAM causing automatic restart your laptop.

Jun 05, 2009 | IBM ThinkPad T41 Notebook

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It's a common problem with flex of the unit causing the video chip to coming un-soldered from the motherboard. It's possible to repair but very difficult requiring luck and specialist equipment.

http://answers.yahoo.com/question/index?qid=20070710050433AAgGOTJ

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2 Answers

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Saw exactly the same think on another t41 i was trying to fix. If it was moved at all screen went off.

Turned out it was corrosion on the motherboard that was causing the problem.

Has it been liquid damaged or got damp in the past?

Jan 07, 2008 | IBM ThinkPad T41 Notebook

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