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Acer aspire 3690 works ok but screen is completely black,currently connected to v.g.a monitor

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Hi,

Since the laptop works on an external monitor, then problem is restricted to the LCD display. The LCD display would be made up of 3 main components: the display itself, the backlight and the inverter.

Rarely do the LCD display panel itself go dead all of a sudden. At most would be initial discolorization or blobs or no display, or lines or garbage display.

Often it would either be the CCF lamps (least likely) that provide the backlight and more often, the inverter that provides the high frequency/high voltage supply of the lamps. Most encountered faults are dried up or blistered capacitors, some with swelling or burst marks at the top. They are readily available and need not be ordered from Acer. It would only require the part number since they are manufactured by a third party. Repairs and DIY (do-it-yourself) would require familiarity with electronic circuitry and components, use of a DVM and a soldering iron.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 05, 2008

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