Question about HP Pavilion dv9000z Notebook

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Screen goes cloudy when turned on.

When the laptop is turned on the screen goes to a cloudy gray. It did this a couple times and then worked ok for a couple of days. Now it will only go to this cloudy blank screen. Any ideas?

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  • john1701 Jan 07, 2009

    I have had this problem also. HP replaced my motherboard and it worked fine for about a month then did the same thing again. I sent it for repairs a second time and when I received it back it wouldn't even turn on. Now I am awaiting its return from a third attempt at fixing it.
    My dv9000 was out of warranty but they are repairing this issue for free. I've looked at some other forums and this seems to be the case with a number of people. There is alot of discussion about motherboard problems and graphics cards. I think your best bet would be to call HP as they would most likely repair yours for free as well, although as I said, Its taken me 3 times to send it to them, and I'm still waiting on this last one.


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1 Answer

Screen has gone cloudy?


Kevin, Kevin, Kevin,.....you should have posted your problem here first.

Primer:
An LCD screen cannot produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, or a series of LED lights.

In regards to the Acer Aspire 7720 series of Notebook PC's, the Backlight is a CCFL.

Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.
(Approximately 2mm Wide, by close to the height of the LCD screen, Tall )

A screen Inverter is used to convert the power (Electricity) of the laptop, for the Backlight, and LCD screen.

http://www.cdsparts.com/p-97-new-acer-aspire-7720-7720g-7720z-7720zg-series-lcd-inverter.aspx

90 PERCENT OF THE TIME THE FAULT IS THE INVERTER.

The thin plastic frame in front of the LCD screen, (Resembles a picture frame), is the Display Bezel.

The screen Inverter is mounted towards the bottom of the LCD screen, and behind the Display Bezel.

This you already know. Posting for those who read this solution in the future.

Service Manual (Free),

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer

For additional questions please post in a Comment.

Regards,
joecoolvette

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