Question about IBM ThinkPad G40 2388 Notebook

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Plugging into a different screen doesn't work

It is not working. Actually we can see the screen a tiny bit (on the laptop itself) but so faintly that we can't see the mouse arrow enough to use it for transporting data to a flash drive. Plugging it into another screen doesn't work at all

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  • 101 Answers

The Cold fusion lamp in your LCD and or the invertor board for the LCD could be bad that is the reason why a faint image . As for the external monitor you should enable it by the Fn+F5/F6/F7 key by pressing it twice at boot up before windows is fully loaded - this to ensure that the external monitor works with your laptop . If the resolution setting and frequency is not comaptible with external monitor you connect then you wont have display on your external monitor . Start windows in safe mode .

Posted on May 13, 2008

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Power is on but no display in the screen


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The ports on the pc can go out but that can be a driver needing to be re-installed or an actual hardware issue. If the port works with other usb devices such as a printer etc then it isn't the port. You can buy a usb port card for under $20 if it is.

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I have a Lenovo 3000 C200. I tripped while carrying it. At first the screen worked fine but eventually it only worked if the lid was 1/2 closed. Now it is so faint I can not use the screent and have...


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if it's just small marks then you could probably get rid of it with windex or even just a bit of water on a paper towel. If they are scratched, try using a fluoride base toothpaste on the screen. Rub it in with a paper towel then wipe it off. It might help to fill in the scratches.

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Black screen / works on external moniter


When you turn your laptop to different angles can you see extremely faint graphics? Try shining a bright light at it an turn it at a 60 degree angle to your eyes. If you can see any graphics then your inverter board is bad. It it located just below the screen in front of the keyboard. The inverter itself is very inexpensive (about $12). Having someone install it shouldn't take more than 45 minutes. Let me know if this helps you.

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can you try to Attach an external monitor and check if it has the same problem on the external monitor?

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I stripped down the laptop to see if I could locate a back light bulb.
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Thanks anyway

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Could be the backlight of the laptop. When the laptop is running try tilting the screen back and forward till you notice what may be your OS...

If so your gonna have to contact a local repairer for your laptop brand...

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It's sort of a solution, but I work in a computer shop and got this screen in yesterday. I looked at it closely and it's actually the backlight that died. I pulled it apart and found that three of the 820uF/20V capacitors had swollen up. If you replace them then you should be fine, but I went for a different approach and took the inverter board from a laptop and put the in the screen and used an external power supply. It's a bit dark but it works fine now.

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