Question about Acer Aspire 6930-6771 Laptop

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I turn my lap top on and after a minute it goes dark. I can hardly see what is on the screen. Somes I reboot and it works fine for hours.

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Try attaching an external monitor to the laptop & see if you could get any display on it. If this is successful, then you might have either a faulty LCD cable or screen inverter board.
The LCD cable transfers data signal from the motherboard & video card to the LCD screen. It also supplies high voltage DC power to the screen inverter board. The screen inverter board works as a power supply for the backlight lamp mounted inside the LCD screen. It converts low voltage DC power to high voltage AC power needed for the backlight lamp.

Posted on Sep 17, 2010

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Have you tested it with an external monitor?

I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

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Thank you for contacting Fixya support, please rate if that helps!!

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what do you mean by going dark?
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e-mail me djtatty@hotmail.com

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welcome to fixya

i would try this first goto device manger in your computer and find the video card in the list and see if it needs updated if this does not work it might be that the video card might be bad but it sounds like a video card update driver is needed

i hope this helps you out have a good day;:)

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plase use another RAM in the same machine if the sam e problem will arise..its u r mother board prblem otherwise u r ram problem

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