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IBM T40 Screen goes off after few seconds

I have IBM T40. When switched on it shows IBM logo and after few seconds it goes blank, completely blank though power stays on. Power stays on but nothing comes up on screen after showing logo. Plz helpppppppp. Cheers

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  • survival Nov 27, 2007

    Dear Ron, Many thanks for your time and solutions. I have looked up into the memory and the memory slot is empty. I have tried removing hdd and putting it back too. I also tried with another memory stick. But at the end of the day the final problem is it switches on show the logo or sometime even go to windows logo and then screen goes off. It seems that fan is running but nothing comes up on the screen completely blank. If switches on again quickly nothing happens on screen. One will have to wait few minutes and then switch on and then same problem display and screen goes off.

    I very much appreciate your help. Many thanks.

  • t40downer Dec 27, 2007

    I am having the same problem with my T40. I tried hooking it up to an external display, and that functions in the same way. I boot up, both the laptop LCD and the external display work just fine, and as Windows is either starting up, or just after it finishes, both displays go blank.



    Any other suggestions?

  • Akil Amin May 23, 2008

    My IBM T40, powers on fine, display goes blank totally.. sometime by holding "FN" and pressing "Spacebar" brings the screen or toggle FN + F7 but the screen does not remain. switches to blank, also tried connecting with other monitor, no luck... I took out the 512 RAM but no luck whatsoever. so annyoing, recently bought a new hard-drive.. please help.. akilamin@gmail.com

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Well, being a techy I figured out this problem but not a fix. I have 3 T40 laptops with the same issue. One of them if you don't touch it it works fine. I probed around thinking the same are you , memory swaps and such but the problem seems to lie either on the motherboard or the CPU socket. When pressing my finger directly on the CPU it immidiatly freezes after making video glitches and garbage. It seems that the sockets become either faulty over time or the mother board has bad connections. I've tried swapping CPU's so that's not the issue. depending how much your CPU fan screws are tight will probably affect it's functionality. I just wish there was a real fix for it but it seems either mechanical or cold solder joints.

Posted on Sep 30, 2009

  • Steven Arseneault
    Steven Arseneault Sep 30, 2009

    Bad CPU socket or solder joint. Trust me. I have two with those problems. Finger on CPU and caused it right away.

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No luck when i tried your solution..

Posted on Jun 16, 2008

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Survival,
Here's a couple of things to try:
Power down and remove the battery. Leave it out until you are done with the following procedures. Remove the memory modules and put only one back in. Try to power up. If that works, replace the other one and power up. If that works, you're fixed!
If not, try to power up in safe mode and see what happens. If it comes up, try running diagnostics on the HDD. If that fails, try reseating the hard drive.

Let me know how you're coming along on this. May be able to come up with more ideas, if needed.

If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question and/or lead to a resolution, please rate it as "Fixya!".
Thank you, and have a super day!
Ron-

Posted on Nov 26, 2007

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Give the VGA monitor a few seconds to come on. (It's a VGA monitor)

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http://en.wikipedia.org/wiki/GPU )

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Are both Inverters the same? (Laptop to laptop)
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http://tim.id.au/laptops/thinkpad/T40-T40p-T41-T41p-T42-T42p.pdf

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