Question about HP Pavilion dv9933cl PC Notebook

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Manual service I have a dv9933cl where randomly the screen will flicker or the colors will be wrong on part of the screen. is this a cable or chip problem or is the only way to tell is to replace the cable and see if it still happens?

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It is probably a GPU overheat issue where the BGA chip has desoldered itself.
Reballing the GPU should fix it.

Posted on Nov 20, 2013

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Posted on Jan 02, 2017

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Picture problems with flickering screen and peppered black dots.


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

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I have an HP dv9260nr. Intel Core 2 Duo @ 2Ghz. 2GB Ram and GeForce Go 7600 When I turn it on I see lines on the screen during boot. they are like red green and blu dotted lines. the color is kinda...


Repeat your video cables and look for bent pins. If that don't work reseat your video card unless it's integrated video in which case you would need a new motherboard.
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Flickering, always cause by LCD cable. Change it at any computer shop or service center and its not so expensive

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Flickering multi-colored line in the middle of the screen.


You have a failure in the vertical deflection circuit. This could be either a bad vertical chip, the power supply that runs the chip or a bad capacitor in that circuit. This is usually a repair best left to a professional. There is a small possibility that it could be bad solder connections. If genlty tapping the unit temporarily solves the issue you can try and resolder the pins on the vertical chip LA7841 is the part number. There is also a resistor 1 ohm 1 watt. If that resistor is open you can assume the IC is bad

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