Question about HP Pavilion dv9000z Notebook
This might be a sign of 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.
Test with an external monitor attached to the laptop. If you get display on the external monitor, then this confirms the case.
Posted on Aug 21, 2010
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Posted on Jan 02, 2017
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