Question about IBM ThinkPad T43 Notebook

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Thinkpad T43 wont get any AC power

I have a t43 and recently i will only work on battery, when i plug in the AC adapter nothing happens.. i tested the power adapter and it is working fine, the outlet of the power adapter also working..

please help

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  • kamelbouz Dec 17, 2008

    I have the same problem with two laptops.

  • Anonymous Dec 22, 2008

    same problem, no power and battery also will not charge

  • tsilva1 Jan 02, 2009

    I have the same problem. When I plug in the power cord into the yellow thing in the back it does not connect. I think it has to be a bad connector - not the motherboad. Is it easy to replace the yellow connector? Please help



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I've run into this many times with IBM machines. The power management chip on the motherboard has failed. Unfortunately, you will have to replace the motherboard in order to fix the problem.

Posted on Aug 13, 2008


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My IBM tpad T43 dont work with AC adapter the AC adapter is ok.How do u check the AC in-port ,powersocket or how do u change it.can it be un other problem!? It's work with batteri.Regards Anders

To check the AC adapter, you need a multimeter to measure the voltage and current of the output. It it is fine, then your battery or computer may have hardware issue.

Feb 08, 2011 | Lenovo IBM THINKPAD T43 AC adapter...

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I have an IBM Thinkpad T43. A good piece of hardware, very dependable and durable. Until now. I cannot boot the t43. when i press the power on switch, the num lock and key lock lights up together with the...

something is definitely faulty.. could be damage on the motherboard.. may be water.. first have it opened and checked then try to power it in adapter minus battery.


Jan 31, 2011 | IBM ThinkPad T43 Notebook

1 Answer

Ibm thinkpad T43 lap is not charging when connected with ac power supply .Can u help me

Whenyou connect the power adapter into the laptop, does the power LED light up? Ifnot then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a dry solderjoint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Dec 15, 2010 | IBM ThinkPad T43 Notebook

1 Answer


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 17, 2010 | IBM ThinkPad T43 Notebook

1 Answer

Ibm thinkpad t43 wont boot

Remove the battery, and unplug it from the wall. Leave it for 30 seconds and then try turning it on with just the power plugged in. So without the battery. Best of luck, Ravi Shanghavi, Ottawa

Aug 19, 2010 | IBM ThinkPad T43 Notebook

1 Answer

IBM T43 Screen Turns OFF After Removing Charger Cable

Sounds like a bad battery to me. If you have a DC voltmeter you can check the battery.

Feb 23, 2009 | IBM ThinkPad T43 Notebook

1 Answer

No power

Check and verify the AC adapter is working.
If it is then you can try removing the battery with the adapter connected try to boot the laptop.
If it boots, reinstall the battery and check to see if it is charging.
Hope this helps.
Good luck.

Sep 06, 2008 | IBM ThinkPad T43 Notebook

1 Answer

Laptop ibm t43 does't turn on if it's not plugged in

This generally indicates that you have a short in the battery, or that one of the fail safes in the battery has kicked in. A new battery will correct the issue.

Aug 07, 2008 | IBM ThinkPad T43 Notebook

1 Answer

BM ThinkPad T43 PC Notebook Problem

hi dear

what ...your problem, dear
please write or explained that moore spesific


Mar 17, 2008 | IBM ThinkPad T43 Notebook

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