Question about IBM ThinkPad T40 2373 Notebook

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Replacing the DC Power Jack IBM Thinkpad T40

Can you tell me what the easiest way to get to the jack is. do i have to remove all the screw in the bottom? is there an easier way.

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  • heyusethis Jan 22, 2009

    thanks but, the link is dead. i don't think the manual talks about replacing the DC Power Jack

  • heyusethis Jan 22, 2009

    thanks for resending the link. it appears as though I need to dismantle the entire laptop to get to the $3 part I need to replace.

    thanks again for the manual


  • ajw204 Feb 12, 2009

    new link to manual please? i need it too. thanks.

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Best way is to follow the mainenance manuals instructions. U can get these online for free in most cases. I happen to have yours bookmarked as my brother has the same laptop as you and his was in need of repair. Here you go. 39t6192_01.pdf
This gives a whole breakdown for dissasembly.

Posted on Jan 22, 2009

  • Chris NoSay Jan 22, 2009

    I'm sorry. Try this.
    The download link is on this page.

    It wont say how to replace the dc power jack, but it'll tell you how to get the motherboard out which is where the dc power jack is located. You can then desolder the dc power jack that's there and swing down to radio shack find one that's the same and solder that one in. If you aren't comfortable soldering then you probably should have it professionally done as you can damage the board if you don't know what you're doing. I don't know your level of experience with such things. Hope this helps. Good luck.


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Ibm thinkpad r50 wont start


Remove main battery and power on, next! remove one stick of ram and try again, remove the second piece and return the first one, if still no result! check the power supply that it is putting out the correct voltage, if okay! the DC jack in the laptop is a common issue with bad connections, this is where a professional is needed to assess.

Mar 14, 2012 | IBM ThinkPad R50e Notebook

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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)

Dec 01, 2010 | IBM ThinkPad T41 Notebook

1 Answer

Will not power up, tried switching batt and a/c adpt. Like the on/off button does not work


You may have a problem with the input power jack. The jack itself maybe open and does not provide power to charge the battery or power the computer. The laptop must be disassembled to check and/or repair the jack. Try getting the battery charged from another similar laptop and then see if the laptop powers up - if it does, the problem is the jack. Worst case is a bad motherboard.

Oct 28, 2010 | IBM ThinkPad T40 2373 Notebook

1 Answer

When i power it on i get four beeps four times and it won't boot and shows nothing on the screen i.e. dark screen the make is thinkcentre lenovo model and after i decide to shut it down by long pressing...


1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced.
4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
5. The power button could be bad.
6. The motherboard could be defective & needs to be replaced.

Sep 14, 2010 | IBM ThinkPad T40 2373 Notebook

1 Answer

How can I change or repair the DC Jack on an IBM ThinkPad T42?


You have to completely disassemble the whole laptop in order to get to the motherboard & actually remove the original soldering to remove the DC power jack from the motherboard. One thing you need is the right tools (Screwdriver) and the soldering gun.

Google & research a guide for disassembling your IBM Thinkpad T42

Mar 26, 2010 | IBM ThinkPad T42 Notebook

3 Answers

Compaq Presario V6000, does not reboot, blank screen, and no power light ON, even after connecting to Power Plug. My Laptop is not getting ON.


Try on to remove the Battery. Wait 10 seconds to replug back again the battery.
Usually this happen when Motherboard Laptop are hang due to increase of wattage from the battery. I hope it is.

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Sep 09, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

Wont pwr up


Hi,
Remove your battery, optical drive and reseat your memory. If you still have no power it sounds like either the ac-adapter or the dc jack (plug).
Try another ac-adapter if you can and see what happens. If there is still no power, I would say your DC jack needs to be serviced or replaced.

Aug 02, 2009 | IBM ThinkPad 600E 2645 Notebook

1 Answer

Hi i asked for my ibm t40 laptop dc jack to be replaced and i have looked in my profile but all i can see is dc jack for a printer my problem is changing the dc jack on my ibm t40 LAPTOP


Problem with power socket on the laptop, it may caused by a dry solder joint and needs to be resoldered or the power socket may be faulty and needs to be replaced. Either way to fix this, it requires the laptop to be dismantled to get at this power socket. Get a quote to repair, as it could cost a few dollars.
If it is a faulty cord/plug on the power adapter, this can be checked with a multi-meter. When you connect the multi-meter probes to the power plug the voltage should be steady and the reading should be slightly higher then the voltage that is printed on the label on the bottom of the power adapter. If the voltages fluctuates as you wriggle the plug then you have a broken wire in the plug. Replacing the plug would not cost much.

Jun 20, 2009 | IBM PC Laptops

3 Answers

DC Power jack broken


Looks like you're right, I did not see any Lenovo replacement jacks either. You might try looking at the IBM Thinkpad jacks for various models to see if you can find the same jack.

I've repaired 3 laptops with this problem. Rather than replacing the jack on the mainboard I wired a "pigtail" to the mainboard and then zip tied a female connector to the back of the laptop itself. I did this because the mainboards were pretty beat up from the heat the original jack produced as it began to loosen. The end result is not as pretty as the original jack, but it absolutely takes all the stress off the mainboard. Those computers will never have this problem again.

Good luck.

Dec 09, 2007 | Lenovo 3000 V100 Notebook

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