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Acer aspire 5043wlmi laptop starts but know function of lcd but works on desktop monitor

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The computer's power management system automatically dims the screen when using battery power, which is one of the power-saving features.
To adjust the brightness:

  • Hold down the Fn Key located at bottom left of your keyboard next to the Ctrl key, and adjust the screen brightness using the left/right arrow keys located at the bottom right of the keyboard.
If that's not it then

A dim or dark screen does not necessarily mean a bad inverter! It could be a faulty lcd backlight bulb, inverter cable, inverter, or in some cases a motherboard failure. If your still under warranty then I would get Acer support on the phone and see what they can do.
An Inverter converts direct current (DC) to alternating current (AC).

Posted on Jul 01, 2008

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Posted on Jan 02, 2017

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6348121.jpg



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Here is a tutorial on how to change the LCD on a Aspire 5100,
It is basically the same on Acer laptops.
http://www.insidemylaptop.com/remove-lcd-screen-replace-inverter-board-acer-aspire-5100-laptop/

Copy and paste the complete link into your browser.
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