Question about IBM ThinkPad T30 2366 Notebook

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T23 Thinkpad could not power up

Hi, I have Thinkpad T23 crashed due to battery running out. After plug the powercable and newer battery in, it does not get powerd up. It's not hibernating. I see the green battery light only and do not see responding from pressing power button. I hope it's a small issue I can troubleshoot myself. It contains important files to recover. Please help me Thank you.

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  • Kevin Chung Mar 15, 2007

    Hi, Tim,
    I apperciate your comments and helps.
    However, it seems not the powersupply issue. I replaced the battery with known good and tried to power up but it did not help. I see the battery light green on the PC but when I press the power button, nothing(no blinking, no fan running....) happens. I am suspicious any internal part that may cause the problem.

    Per recovering files, you mentioned 40pin adapter with external drive case. Can I buy it from the store? and attach to the PC w/o opening? I appreciate your help again.




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Your machine should run without the battery, just plug it into the power supply. You may check the powersupply itself. Maybe the power supply was bad and not the original battery. You can pickup one at a computer store. A universal costs around $100.00 to $120.00. The power supply is the (usually) the rectangle box that is part of the power cord. Let me know if that was it. Good Luck. Tim

Posted on Mar 15, 2007

  • Timothy Higgins
    Timothy Higgins Mar 15, 2007

    if worse came to worse..You should be able to recover your files using an external drive case w/ 40 pin adapter to read the IBM hard drive as a slave and recover files.

    Still Tim

  • Timothy Higgins
    Timothy Higgins Mar 15, 2007

    Yes you can get a hard drive enclosure. You'll need to get a 2 1/2 drive adapter(aka 40 pin). Frys, CompUSA , The internet. You would hook the drive via USB and view the drive as a slave drive.



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How do I remove the backup battery from my Thinkpad 2647 T23? I'm trying to remove the POP.

ThinkPad T23 2647

Manufacturer - IBM
Series - T Series
Subseries - ThinkPad T23
Machine Type - 2647

1) Remove ALL power. Remove the AC adapter (Charger), and Battery.

2) Battery removed, Battery Compartment facing you.

Look at the right inside edge. There is a small plastic cover inside the Battery Compartment.

Remove the one Philips head screw, then remove the cover.
Backup battery, CMOS battery, or RTC battery. SAME/same.
(Real Time Clock battery)

Also, here is the Service Manual,

Drop down to the 8th line. (ThinkPad T20. T20 in blue)
Scroll over, and left-click right on - T23

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.

After you click on the file name, (T23), it may take up to 30 seconds, before the first page comes up.

Start on Page 66. Backup Battery is on Page 67.
In the Bookmarks menu to the left, click on -

1) The + sign to the left of -
ThinkPad T20, T21, T22, and T23 series.

2) The + sign to the left of -
Removing and replacing an FRU.
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3) Left-click right on - 1010 Battery Pack, and 1020 Backup Battery.

Nice to have when you are going to clean that puppy out.
(BUY, and wear an ESD wrist strap. Connect it's alligator clip to a good ground source.
Average price is around $3 to $6)

Also nice to have to upgrade the Processor, and a myriad of other things.


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replace the battery if contacts are clean inside the computer

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In my IBM T23 Thinkpad battery is fully charged showing green light constantly but not able to switch 'ON' after pressing the power button. What should I do?

try to switch it on with power cord still plug in it, if it do boot-up, you have to replace your baterry, if not somethings wrong with your laptop

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IBM thinkpad T23 2647 install help

Many lockups are caused by incorrect (wrong kind or too much) or faulty memory modules. If you are comfortable doing so, open the memory door on the bottom (most likely) of the PC after first unplugging the PC and removing the main battery. Verify, if you can, that the memory is correct for PC. If the modules don't specifically say what type and speed they are, do a search on any numbers on labels. Go to and use the memory finder on the left side of the page. If the memory you have is the correct type, try the following: If there are two modules, remove one, then try your XP install again. If it crashes, reinstall the removed module, and remove the other one. If either XP install works, the removed module is faulty. Replace it. If it still crashes, try to borrow some proper memory from someone. If all of this still doesn't work, it could be the hard drive and NOT the memory. In this case, about the only thing you can do is borrow a copy of a bootable CD-ROM based program that can check your hard drive. Many hard drive manufacturers have something like this.

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2002 IBM ThinkPad T23 battery problems/won't run without power

It doesn't look to me that you're doing anything wrong there.
Was there a specific installation requirement for the battery?

I recently changed my battery on my IBM/Lenovo and all that was necessary, was to let it charge fully before usage.

If you say your battery was charged for "a few days", then I assume there is something wrong with the battery. Next to your taskbar you should see a battery symbol. Double-click on it and you should see the Thinkpad Power Manager. If there is a tab called "Battery Information", see if that gives you more details. Look at the Manufacturing date!

If you really can't run the laptop without being connected to a power source, I would definitely return the battery or at least call the vendor. If your computer is running fine otherwise, there should be nothing wrong with the machine itself.

If you can take a screenshot of that battery information window adn post it here, I am happy to look at it.

You're doing the right things when you try to use the laptop without an external power source - that's the whole idea, isn't it?

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3 Answers

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I would unplug it and remove the battery. Plug it back in and try without battery, if it still doesn't work, unplug the power again and remove the memory (RAM). Plug it back in and try again without RAM, if it beeps then the motherboard is probably good. If you had more than one piece of RAM, try one at a time and see if you get it to boot with one of them.

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then the battery is not holding charge try leaving power cable in and switch on

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