Question about IBM ThinkPad T21 Notebook
If the computer seems to boot up just fine, but is not displaying a picture, take a flashlight and shine it at an angle on the screen, and see if you can see a very faint image of what should be displayed. If this is the case then the backlight bulb in your LCD panel has burned out. If you do not see anything on the screen at all even under a flashlight, then this could be indicative of a larger problem.
Hook the laptop up to an external monitor to make sure that you get a proper image on there first before you proceed. (Make sure that you try to change the laptop from internal video mode to external video mode if nothing shows up immediately. I have to press the Fn + F7 buttons on my T40p to tell it to use an external video monitor) If nothing shows up on the external monitor, then odds are that something else is wrong. Start by removing sticks of memory one at a time to see if they are causing the system to not boot up. (If memory is the problem, you should hear a series of beeps on startup though). Other complete video failure causes ussually have something to do with the Motherboard, orsome subsystem of it.
If you can see video on the external monitor, then either the LCD panel has gone bad, or the video cable has come unplugged. You can check this on most thinkpads by removing the keyboard and making sure that the video ribbon cable is securely in place.
Posted on May 27, 2009
SOURCE: IBM Thinkpad T21
Input Voltage: AC 100-240V, 50-60Hz Output Voltage: DC 16V, 4.5A, 72W Max
You can get one on EBAY for cheap.
Posted on Nov 19, 2007
SOURCE: IBM Thinkpad T21 LCD problem
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.
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Posted on Apr 05, 2008
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Posted on Jan 02, 2017
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