Question about IBM Lenovo ThinkPad X60 Motherboard - 42W7697

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I have a IBM X60 which has broken LCD. I replaced with a new one but the laptop won't turn on if the LCD cable is inserted in the bracket. And the same thing happen no matter whether the power plug of LCD screen is inserted in the inverter. The fan and hard drive spin for a few seconds and then everying is stopped. If I pull the LCD cable out of the LCD screen, everything is fine. Please let me know what happened.

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  • jiehang Oct 01, 2010

    First, thank you for the answer. As I stated in my question, no matter if the inverter is used, the laptop won't start if the lcd cable is inserted in the screen. The ldd cable is a new cable as well.

  • jiehang Oct 03, 2010

    The laptop won't turn on even when the inverter is not plugged. As long as the LCD cable is inserted in the screen, the laptop won't t turn on. The laptop can start normally when the LCD screen is not connected with the LCD cable. I have tried the VGA ouput and it works.

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Not sure, but the inverter might be bad. Here's a site that explains how to check one:
http://www.fonerbooks.com/test.htm
It sure sounds like the power supply is getting loaded down when the inverter is plugged in, and I would concentrate on that item.
Good luck, and hope this helps.

Posted on Oct 02, 2010

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I think you may find it is the Inverter that is faulty, try replacing that unit and most likely your problem will be resolved.
When you plug it all in and the PC shuts down, that is because the special protection circuitry in the Power supply, is detecting a "Problem" (Usually a short circuit or a too large a current draw) and it shuts the system down. So this points to the Inverter, or maybe the backlight.
To prove your video card see if you can get the laptop to work on an external monitor with NO LCD inverter connected. If it is OKI, this then proves your actual Video Card, and more points to the LCD external drive.

Posted on Oct 01, 2010

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