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Screen has gone very dark - Compaq Computers & Internet

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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 18, 2010

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Posted on Jan 02, 2017

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1 Answer

Laptop screen gone dark


I had a similar problem on my Fujitsu-Siemens Lifebook C-1020 and I had to replace both the C/C inverter that the CCFL lamp. Easy to find/replace the inverter (only take care of input/output plugs), tricky to find/replace the CCFL lamp (because of diameter, lenght and toxic Hg content).

Zpp
Have fun!

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