Question about IBM ThinkPad T21 Notebook

4 Answers

IBM thinkpad T21

My IBM T21 thinkpad will not stay powered on. This started happening a couple of months ago and I noticed that if I took the battery out for a couple of days and put it back in, the machince would work again.  However after a while (a couple of weeks) the problem re-occured.  I then noticed that if I kept the battery out completely and just ran off the power cord the machine worked fine.  This again worked for about a month.  Now, I can't get the laptop to stay on for more than a minute and it just shuts down and doesn't come back on.  If I unplug the power cord and wait a day, it'll fire back up but again only for a minute.  One it goes down, Ihave to keep it unplugged for about a day to be able to power it back on and get to CMOS settings or XP login screen.  This has nothing to do with the OS as I've seen it die while sitting on the CMOS screen settings.   Any idea what parts might need to be replaced?    I thought about replacing the battery but since it doesn't work even without the battery in it (when it's powered thru AC)) would that make a differnce?   Could the CMOS battery be the issue?    I'd like to be able to continue using this or at least keep it on long enough to move some more data off it.    Thanks

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  • amojoy61 Nov 06, 2007

    I have a very similar problem with my T21. I started having the problem about two weeks ago. However, if I leave the battery out and let it sit for about a day, it will power up and will work perfectly until it's shut down. it's really a pain...I had it to the computer shop and they cannot find anything wrong. The clock is accurate when it comes on. What could be the problem?

    Amos

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I had a similar problem after My pc got damp in a bag in the rain. I contacted IBM and was given this fix which I am supprised worked but it did so here it is cannot hurt to try. Remove the main battery and the mains power supply press the power on button for 17 seconds. This I think is to drain all the power from the laptop altogether. Replace the mains lead and turn on. Once the laptop has openen up into windows turn it off and replace the mains battery then power on again. In my case this worked I hope this helps.

Posted on Mar 17, 2008

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Check connection near Video invertor board and motherboard. With heat, this connector tends to come of the board. It is a 4 pin connector which joins the Mobo and video board. Also check your processor heat sinking compound, make sure there is enuf. Processor will tend to overheat and shut the sytem down. The latter fix requires you take the system apart to check.

Posted on Apr 27, 2009

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I am having the same problem and i dunno wat 2 do

Posted on Jul 12, 2008

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It can be but i recomended u to try to UPDRAGE UR BIOS first and change CMOS battery.

 

If it wont work so switch on without CMOS battery AND try

 

Check ram hdd and power syply

 

if still have a problem : just buy new motherboard

Posted on Oct 21, 2007

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Posted on Jan 02, 2017

Pterocarpous
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SOURCE: IBM Thinkpad T21 LCD problem

Hello shadl

Am I understanding your correctly? - the monitor of your T21 is working intermittently? Please, let me know if I've misunderstood your description of the problem.
------
If the issue is w/ the monitor, ....

And the symptoms are intermittent and change w/ opening and closing the cover (monitor) then there's a good possibility the problem isn't w/ the monitor itself rather it's w/ the cables or wiring going from the monitor to the mainboard. If that is the case, whether it is repairable w/o replacing the monitor will depend upon the cables and/or wiring involved.

It would make sense that an issue like that was caused by worn or damaged cables/wiring as those are the parts of the monitor that would've been subject to wear and tear over time.

I recommend you disassemble the monitor from the laptop and carefully inspect all the cables and wiring that run between the monitor and the laptop.
I will see if I can find a service manual online for you that will step you through removing the monitor.

If it does turn out that the problem is w/ the monitor itself or that the monitor's wiring or cables cannot be repaired, you can search the Internet for another Thinkpad T21 that you can salvage parts off of. (eBay would be one good place to look.) You can try finding just the monitor but I think you'll stand a better chance at finding a T21 that is being sold for salvage.

In the interim, you should be able to connect an external monitor and use the computer w/ it for now.

IF you connect an external monitor and the symptoms persist, then the problem isn't w/ your monitor at all. Be sure to post back here and let us know if that is the case, too.

***************
Please, let me know if this response was "Helpful" or a "FixYa" for you or, of course, if you have additional questions, etc on this topic.

If I did not answer your question satisfactorially, plz, b4 assigning a "Thanks for Trying" or lower rating to my "Solution", let me know. I may have misunderstood you or the problem you are experiencing. In any case, I will work w/ you until your problem is resolved or diagnosed. I promise! :)

Thank you
BJ
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Posted on Apr 05, 2008

geekofcomp
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SOURCE: IBM thinkpad 2647 T21 LAN Card Driver files needed...

if you are using the internal LAN card to connect to the cable modem, no additional drivers will be needed. However, you would need to configure TCP/IP settings to use a DHCP server to automatically configure the IP address. you would also need to check whether or not you have the right CAT-5 cable. you might need to buy a crossover cable.

hope this helps

Posted on Apr 08, 2008

  • 3 Answers

SOURCE: IBM T21

i have the same problem. actually its a common problem for many T21 and other old IBM laptops.
i searched that you have to take all power (batery, adaptor)
press the power 10 times and press it for 30 secs then reinsert the battery or adaptor and try to power it on.
they say its done to discharge a certain capacitor that got overcharged after overcharging the battery.
that worked for me before but now my T21 wont start any more with this process.

Posted on Jan 16, 2009

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My thinkpad t21 just died! It started 2 weeks ago when I would turn it on, sometimes the screen would not light up or come on. I could see in the shadow, if there was a light on the screen that it was...


Remove the battery and power cord. Hold the power button in while connecting the power cord hen the battery. This will reset the power distribution settings. If this does nor resolve the issue then you need a new power supply. With this machine a new computer would be less expensive.

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IBM thinkpad A21 won't start up


1# remove the battery from the thinkpad and ac adapter.
2# hold the power button for 40 seconds.
3# plug in the ac adapter and turn on the botton.
4# see it for works what trying to do to thinkpad is recyle the power .

give it a try and see if it work if it doesnt let me know


Nass

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This is a common problem with the T20 series Thinkpad. The problem is with the power management chip. Unfortunately, you will have to replace the motherboard to fix it. Since these are a bit on the older side, you can get a motherboard off Ebay at a reasonable price.

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try to start it with the battery out by pluging it straight, the battery is dead and its causing problems

Mar 13, 2008 | IBM ThinkPad T21 2647 Notebook

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Nothing appear on the screen


Remove any devices connected and power it on by itslef, either on battery or power source, if it doesnt work, it may have bad processor, When they go bad most laptops wont boot period.

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T21
Input Voltage: AC 100-240V, 50-60Hz Output Voltage: DC 16V, 4.5A, 72W Max

You can get one on EBAY for cheap.
http://cgi.ebay.com/Laptop-AC-Adapter-Charger-for-IBM-Thinkpad-T21-2648_W0QQitemZ300173112123QQcmdZViewItem

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5 Answers

Laptop is locked out


This works great
Forgotten Power-on password
If the Power-on password is forgotten
and the Supervisor password is known,
simply go into the ThinkPad BIOS setup
utility and reset the Power-on password,
otherwise try the following:
Turn off the computer.
Remove the battery pack.
Remove the backup battery. This is
located under the battery.
Turn on the computer and wait until the
POST ends. After the POST ends, the
password prompt does not appear. The POP
has been removed.
Reinstall the backup battery and the
battery pack.
Note: Some ThinkPad systems have the
ability to reset the Power-on passwords
in the ThinkPad BIOS setup utility if a
Supervisor password has been set.

Oct 30, 2007 | IBM ThinkPad T21 Notebook

3 Answers

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i have the same problem. actually its a common problem for many T21 and other old IBM laptops.
i searched that you have to take all power (batery, adaptor)
press the power 10 times and press it for 30 secs then reinsert the battery or adaptor and try to power it on.
they say its done to discharge a certain capacitor that got overcharged after overcharging the battery.
that worked for me before but now my T21 wont start any more with this process.

May 20, 2007 | IBM ThinkPad T21 Notebook

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