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    Extensa 4620 backlight not working

    Discussion in 'Acer' started by Motorolus, Mar 27, 2010.

  1. Motorolus

    Motorolus Newbie

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    At this point I've already replaced the inverter, screen, and LCD cable. I'm guessing the problem has to be with the motherboard. Is there anything more I can do?
     
    Motorolus, Mar 27, 2010
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  2. Motorolus

    Motorolus Newbie

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    I'm able to use an external monitor with it, so there can't be anything wrong with the video card.
     
    Motorolus, Mar 28, 2010
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  3. AndrejaKo

    AndrejaKo Notebook Consultant

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    Can your inverter power another cold cathode fluorescent lamp?
    Can the screen's lamp be powered by another inverter?
    What operaitng systems did you try? Did you install BIOS updates?
     
    AndrejaKo, Mar 28, 2010
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  4. Motorolus

    Motorolus Newbie

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    I've got two inverters and two LCD screens, no combination works. Tried updating the BIOS and resetting to default values. The only OS I've tried is Vista.
     
    Motorolus, Mar 28, 2010
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