Question about IBM ThinkPad T20 2647 Notebook

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T21 IBM won't start intermittently

I have an IBM T21 that has exactly the same symptoms as described. I have tried all the same things except replace the motherboard and have also checked the voltage on the CMOS battery. If it is allowed to sit for 24 -48 hrs with the charger disconnected it will start up normally every time. It will shut down by itself occasionally when operating but it works normally otherwise. Frustrating problem. It's operating environment is 70 F and 50% RH. Any help would be appreciated. John

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You have to check your RAM memory .
Some times this problem occurs becasue of faulty RAM or confliction between 2 RAM .
So check your RAM in other Laptop or try with only 1 RAM 1 by 1 if you have 2 RAM .

Thakns for using fixya.
Please rate thisd solution if it helps.

Posted on Jul 22, 2009

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Back light on ibm t21


This is an known problem I think you must replace the backlight:
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only for example if this is your problem.

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Oct 14, 2008 | IBM ThinkPad T21 Notebook

1 Answer

No display!!!!


you probably know that something else got messed up in the switch.

Here is a page talking about BIOS beep error codes.

I'd do a few things. Reseat the RAM, this is easy and could be messed up..

I'm worried that there was a short or some other issue that damaged a component on the main board. I'd try to follow the Power On Self Test (POST) error codes from above, or google it more to see if you can find your exact symptom. If you are still getting beeps, you should be able to determine exactly what is wrong.

Sep 06, 2008 | IBM ThinkPad T43 Notebook

1 Answer

IBM Thinkpad T21


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.

Aug 04, 2008 | IBM ThinkPad T21 Notebook

1 Answer

Replacing the lithium backup battery in IBM T21


You'll need to remove the keyboard. Two screws on the bottom hold it. Then take a small flathead screwdriver and pull up one side, it will then lift up & out. You should be able to see the C-MOS battery connector.

Jun 10, 2008 | IBM ThinkPad T21 2648 Notebook

1 Answer

Pentium III 800 mhz T21 Thinkpad Internet connection problems


why fight it , let it be on com 1 then,
go into the bios and disable the serial ports .
that may be the easiest fix as long as you don't need the serial port for anything.
but if you have a serial mouse oh boy.

May 13, 2008 | IBM ThinkPad T21 Notebook

4 Answers

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
***************

Apr 05, 2008 | IBM ThinkPad T21 Notebook

2 Answers

IBM T21 doesn't start


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

1 Answer

Laptop won't boot


This could be an indicator of one of two things: 1. Bad motherboard 2. Short circuit. If you can, disconnect the CD-Rom drive, hard-drive AND the keyboard if possible. If you turn the laptop upside down you can normally see the screws relating to each of these components. Do one at a time and test to eliminate them. M

Aug 21, 2007 | IBM ThinkPad T21 Notebook

3 Answers

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.

May 20, 2007 | IBM ThinkPad T21 Notebook

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