Question about IBM ThinkPad T41 Notebook

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IBM Thinkpad doesn't start

My IBM Thinpad T41 doesn't start at all. I have opened the laptop up to make sure there isn't a bad connection with the power jack. the laptop doesn't start with a working battery or ac adapter. there is simply no LEDs and no sound of the fam powering up...

any thoughts are appreciated

indajay

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  • indajay15 Apr 30, 2008

    ok



    so do you think i need to get a new motherboard??



    indajay

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  • 38 Answers

Visit Lenova's troubleshooting page at
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4YQJZX

I assume you have verified the battery and AC adapter with another machine or a voltmeter.

If none of the above get it going, you most likely have motherboard issues, possibly a blown fuse.

Or possibly a keyboard Power On switch problem.

Good luck.

Posted on Apr 28, 2008

  • Bob Apr 30, 2008

    A new motherboard? I would not know but you will after you process the steps I suggested.



    New motherboards are expensive. Consider looking for a technician who can troubleshoot to the component level and fix your MB.


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4 Answers

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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It sounds like some sort of power drain or short on the motherboard. I recently made a repair job on a T41,casing on an IBM thinkpad T40 AND T41`S are very week.
My advice to you would be reinstall windows and see if it does it again,If it doesn`t then you will know for sure that it had something to do with windows.IF it still does after a clean installation of windows then its clearly a hardware fault.
*Hardware fault could be you`re power supply not giving enough juice(unlikely) *Motherboard faulty/Or Shorting somewere.If thats the case then a refurbished motherboard would do the trick.

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Here is your service manual for the laptop, makes a good reference point. Make sure to make yourself a copy.

http://tim.id.au/laptops/thinkpad/T40-T40p-T41-T41p-T42-T42p.pdf

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If prior to this it works intermittently with the AC adapter, it means the connection from the adapter power unit to the motherboard was lost and this is a typical problem with the Thinkpad. It needs a re-soldering job and not something that one can do without a proper repair manual on how to open the laptop. Try googling your problem and find out if someone has the same experience and managed to resolder by him/herself.

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rate this solution

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i think it would be best to reinstall your operating system. make sure you install all drivers while your at it

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