Question about IBM ThinkPad 600X Notebook

2 Answers

The panel on my 600x works for a few minutes then turns off.

When it it goes out I press Fn-F7 a few times and it comes back on. Not very computer savvy, but is there anything I can do to fix?

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  • ggad Mar 02, 2009

    The main panel dies out after a few minutes, whether or not an external monitor is connected and/or selected. Do I have a faulty panel? Software problem?

  • ggad Mar 03, 2009

    Yes I can get an image on an external monitor. It is always available. It's just my laptop panel that drops out after a few minutes. When it does I can barely see an image on the panel, very faintly, as the panel is not "lit". Can it be a problem with the lighting circuitry of the panel? Is there a built-in overheating switch?



    If it is a "problem with the video switching part of the electronics" as you suggest, is that a hardware or a software problem. Can a novice fix it, or do I try to fing a qualified tech?



    Thx 4 your help




  • ggad Mar 03, 2009

    I do not see a redish/pinkish hue, but I do get some very slight flickering, with a slightly dimmed screen. Nonetheless your solution makes alot of sense to me. I'm not sure if it's worth having the CCFL backlight repaired. Might be cheaper to stick with an external flat panel, as I don't need the laptop to be mobile. Thanks for your advice. I think u nailed it!

  • ggad Apr 09, 2009

    Thanks for your help. I'll give it a shot as soon as I can. Where would I buy such an inverter?

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  • Contributor
  • 18 Answers

Your problem definitely sounds like the inverter - when you press FN-F7 you're restarting it and giving it a mild jolt. Luckily, it is a breeze to replace - undo two screws and pop off the screen bezel and it's just behind the contrast control. Get the service manual for the 600X from Lenovo's website which gives full stripdown details.

Posted on Apr 08, 2009

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  • IBM Master
  • 32,281 Answers

There is an external video connector on the back edge of your laptop. When you connect an external monitor or a data projector to this video connector, you can switch the video information between the laptop's LCD screen and the external display on the external monitor or data projector using the Fn-F7 keys.
By pressing it several times you cycle it with various options, these are :-
LCD only
External video only
LCD and external video

Posted on Mar 02, 2009

  • 1 more comment 
  • Chris Hingee
    Chris Hingee Mar 02, 2009

    If you can see a display then the LCD screen is OK.

    Can you get an image on an external monitor?



    If you have to press Fn-F7 keys to bring back the display it could a problem with the video switching part of the electronics.

    This may be possible to be repaired.

  • Chris Hingee
    Chris Hingee Mar 03, 2009

    Haaa! now that you mentioned that you see a faint image on the LCD screen, this points to a LCD backlight problem.

    It could be a faulty inverter - It is eaisly replaced or it is a faulty CCFL lamp - most likely this is the problem and it is more difficult to replace (lot more work and requires soldering skills).



    A defective CCFL backlight may has the following symptom:


    • Screen flashs on red/pink and off.

    • Picture stays on in red and slowly be come normal.

    • Picture flickering with dim display.

    • Picture flickering on and off.

    You can fix it yourself or get it repaired. Have a look at

    http://www.lcdparts.net

  • Chris Hingee
    Chris Hingee Apr 09, 2009

    You can fix it yourself or get it repaired. Have a look at
    http://www.lcdparts.net

    They have details of parts, can select parts by laptop make and model. They also have info for Do It Yourself.

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