Question about IBM ThinkPad T40 2373 Notebook

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Power connector of T40 think pad loosen

Intermitten ,can not charge the battery. Battery is good my thinkpad T40 wont charge battery or light up on ac power have to charge the battery in another laptop the ac power connector has been changed and i know it recives power is there a regulator on the board?

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If you think your adapter really works fine then you have a  motherboard issue.

Posted on May 28, 2009

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2 Answers

Hello, I have an IBM ThinkPad t40 and my battery will not charge. It runs on AC power but shuts off as soon as AC is removed.


You should replace the battery. I wish I had a better answer, but that's pretty straight forward.

Mar 04, 2010 | IBM ThinkPad T40 2373 Notebook

2 Answers

My IBM T40 boots to a black screen with the "z"(light at top to right of power.


Try these steps:

1. Remove battery and unplug AC adapter
2. Press power on button for 30 seconds or so (one min is also too)
3. Attach battery and plug into wall
4. Power "ON" as normal

If you are still getting the "Z" and a black screen then I would have the video card or hard drive looked at and replaced. Start with the video card and then look at the hard drive


thinkpad-t42-wont-boot.html">http://www.techsupportforum.com/hardware-support/laptop-support/234433-ibm-thinkpad-t42-wont-boot.html

Feb 17, 2010 | IBM ThinkPad T40 2373 Notebook

1 Answer

My ibm-t40 think pad will not charge


What do you mean not charge?? If you have the AC cord in and the battery out will the laptop turn on with out the battery? If so your battery is dead and this is a common issue.

I suggest contacting IBM or finding one on ebay as they are much cheaper!

Jan 20, 2010 | IBM ThinkPad T40 2373 Notebook

1 Answer

I have an IBM think pad T40 that does absolutely nothing when I try to turn it on. It's actually my daughters, she sid it was working just fine then she shut it down and when she came back an hour later it...


Try taking the batter out and booting using just the power cord and Vice Versus'. Also when the power is plugged in does the charging light (Battery Indicator) blink or light up? If you know the Power Supply is good, then the Mother Board may have fried. If it's under warranty, take the Hard Drive out and send it in.

Dec 20, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

Same problem think pad will not boot ,


check and make sure that the backlight on the screen is hasn't burned out. Do you see the POST/Setup screen at first? If not then that MAY be your problem.

Jul 29, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

IBM think pad t40...the screen stays black. Shows


Are the activity lights blinking like the computer is doing something? If so the monitor may be disconnected from the unit or damaged. If so this is a pc repair issue, and a little tricky to do on your own.

Jul 03, 2009 | Battery Technology IBM ThinkPad T40, R50

1 Answer

Power connector of T40 think pad loosen


If you can't charge the battery and you know the battery is good, hook up just the ac adapter to verify that the laptop can turn on without the battery hooked up and if your laptop turns on then you know both are good.

At that point I would say since its not charging then it could be that the dc jack has some bad solder points on the bottom of it and need to be resoldered. Sometimes if the solder goes dry and cracks just a bit if can cause the adapter not to charge the battery.

If that doesnt fix the problem the the motheboard is bad and would need to be replaced.

Apr 09, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

IBM T40 the battery is fully charged but will not power on with the ac


Have you disabled your battery
is your battery showing
check control panel\power options
does your battery show as 100 % charged
then you can also check device manager for battery
Let me know

Jan 29, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

Defintely getting power, but not switching on.


There are several possibilities. Let's start with the easiest two. First the battery, take it out and try starting up only with the power supply. Then the memory chips. If a memory chip fails it can cause a no start in IBM's. Take the memory out and try it. Then try it, putting them in one at a time. If these don't work, then I'm afraid your problem lies within. Namingly the power management chip on the motherboard. The pm chip controls the power input, and allows such functions as switching between battery and AC, and battery charging. The pm chip can go without warning, and just because it lights and shows charging doesn't mean this chip hasn't malfunctioned. I've had several IBM's come through my shop that have experienced the same problem you're describing. I've also had them with problems like; it will only power with the battery, won't charge the battery, will charge battery and only run with battery shuts down while charging, only power under AC, etc... all pm chip related issues. Unfortunately, the only solution is motherboard replacement.

Jun 19, 2008 | IBM ThinkPad T40 2373 Notebook

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