Re: BLACK SCREEN HPPavillion ZV5242qv

--- In Laptop_Repair%40yahoogroups.com">Laptop_Repairyahoogroups.com, Ardell Faul <ardell...> wrote:
&gt;
> Yes, I understand. The image is very faint. The image is very faint
&gt; because a LCD panel is a passive device--that is--it does not generate
> ANY light at all. In fact, it is a light absorber. When pixel turns
&gt; on, it blocks light from passing through the Liquid Crystal that makes
&gt; up each and every of the 100's of thousands of pixels, or little dots.
&gt; There are Red filters, Green filters, and Blue filters. The light
&gt; source for your eyes is the lamp, which is INSIDE the thickness of the
> LCD panel, and that is what is not working right now. The faint image
&gt; you can see is due to ambient light in the room getting inside the
> panel, bouncing around a while, then exiting through the pixels just
>; like light from the lamp would if it were working, and that is why you
> can see the image. If you turn the light off in the room, you are no
> longer providing ANY light source for the LCD pixels to filter for
you,
> consquentually, you see nothing because there is no light to see.
>;
>
> To try the external monitor, do this. Turn both units off. Plug the
> monitor into the back of the laptop. Turn the External monitor power
&gt; on. Turn the laptop on Watch the external monitor for any video and
> let the laptop boot up for awhile. When you can see by the faint image
&gt; that it has booted into Windows, if there is nothing on the external
> monitor, try pressing the Fn key and the F5 key simultaneous. It may
be
> one of the other F keys up top, which ever one has a little monitor
> symbol on it, must be pressed simultaneously with the Fn key down in
the
> lower left. Press them a couple of time. The video should pop over to
> the external monitor.
>
>; Ardell Faul
>; Computer Monitor Service Inc.
>; Ardell's Laptop and PC Repair
&gt; 10816 E. Mission Ave.,
&gt; Spokane Valley, Wa. 99206
&gt; ardell...
> 509-891-5188
>
>
>;
> harrelsond wrote:
&gt;
> >
>; >
>; > > >
>; > >Ardell, Thanks for the quick response. Keep in mind that the image
is
> > VERY faint. In fact I tried turning off the lights in the room and
then
> > saw nothing. When I tried the external monitor the laptop was off.
If I
> > am understnading you correclty you are suggesting that I have the
laptop
> > on when I try connecting to the extrnal monitor? Is the external
monitor
> > to be on or off before I connect?
> >
>; >
>; >
>;
>----------------------------------------------------------
-
> >
>; >No virus found in this incoming message.
> >Checked by AVG.
>; >Version: 7.5.519 / Virus Database: 269.21.7/1335 - Release Date:
3/19/2008 9:54 AM
> >
>; >
>;
WOW that makes sense now! I am going to try this as soon as I get home.
IF it displays on the external monitor what next? Is this something that
I can fix? I won't have access to the internet tonight and will check
back with you in the am with the results.

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.

I hope you understand that the issue of being able to see video on the
external monitor is merely to confirm that the problem is the LCD panel,
not the motherboard. Which I am about 100% sure of anyway since you can
see the image still existing on the LCD panel. the best you can hope
for now is that the problem is the inverter and not the lamp inside the
LCD panel. But that is not always easy to determine. And You are going
to have to remove the front plastic bezel around the LCD screen, whihc
usually is a matter of lifting the rubber feet ocvering them up, then
unscrewing the screws, all of them, then carefully prying up the bexel
without cracking the LCD panel doing so. sometimes they put double back
tape along the edges to make it look better, but it also can make it
very hard to remove safely.

when you get the bexel off, you will see the inverter circuit board,
usually below the LCD panel, plugged into the ribbon cabe going to the
motherboard on one end, and the pink/blue/ white wires from the lamp
plugged into the other end. This is the part you might be able to
replace on your own to save a few bucks. You will not be able to replace
the lamp if it is bad, and replacing the whole screen is also more
difficult, as well as costly. (Generally about $250 or more) But if
you take a chance and buy an inverter and that doesn't do the job, you
will be out $$ already and still have to pay someone else to do the
proper repair. None of these tasks we are discussing here are really
do-it-yourslef jobs for the average user.

Ardell Faul
Computer Monitor Service Inc.
Ardell's Laptop and PC Repair
10816 E. Mission Ave.,
Spokane Valley, Wa. 99206
ardell%40icehouse.net">ardellicehouse.net
509-891-5188

harrelsond wrote:

> >
>; WOW that makes sense now! I am going to try this as soon as I get home.
&gt; IF it displays on the external monitor what next? Is this something that
>; I can fix? I won't have access to the internet tonight and will check
&gt; back with you in the am with the results.
>
>;
>
>----------------------------------------------------------
>
>No virus found in this incoming message.
>Checked by AVG.
>Version: 7.5.519 / Virus Database: 269.21.7/1335 - Release Date: 3/19/2008 9:54 AM
>
>

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.