Hi Ardell,
Interesting. But if all "dozen" wires were used to transmitted binary code, how many possibilities would that be?
What is 2^12 ?... (I don't know how to use Windows calculator in binary) ... would that be more than 1024 x 768 ?
Point is, the LCD screen is a matrix, with each node accessed by a unique binary code.
What would make the top half distorted, and the bottom half Ok?
If the panel itself was bad, then something must have damaged all the pixels in the top half.
Or the signal received by the top half is corrupt.
If each pixel (picture element) on the top half is distorted, is it because the screen is bad, or because it is receiving a bad signal?
What would cause all elements below 2^x to be corrupt, and all above (2^x)+1 to be good?
Is it displaying a bad image because the panel is physically defective, or because it's receiving a defective digital signal?
I don't have an answer ... just looking for your opinion.
rogerX
--- In simplycomputers2@yahoogroups.com, Ardell Faul <ardell@...> wrote:
>
> That is a defective LCD panel. The ability to control individual pixels,
> or blocks of them, is developed within the panel itself. The cable
> coming from the motherboard video card to the LCD panel only has about a
> dozen wires--no where near enough to control pixels at a 1024X768 count
> or higher. The RGB video signals are displayed by circuitry inside the
> panel pixel by pixel. Your is no longer able to do its job properly.
>
> The inverter thingy is simply a small DC converter that pumps up 12
> Volts DC to about 1200 Volts AC which is used to power a long thin
> fluorescent light bulb that is inside the panel along the bottom edge.
> It has nothing to do with the pixel control, but simply provides the
> light so you can see the displayed video.
>
> Ardell Faul
> Computer Monitor Service Inc.
> Ardell's Laptop and PC Repair
> 10816 E. Mission Ave.,
> Spokane Valley, Wa. 99206
> ardell@...
> 509-891-5188
>
>
> On 12/6/2011 12:32 PM, ttynan@... wrote:
> >
> > Mine is slightly different. The top half is distorted with gridlines
> > and boxes kind of, flckering, bottom half normal. I was wondering if
> > it were an expensive screen failure or a cgip on the board. Ideas?
> > Inverter thingy?
> > Thanks
> >
> > --- In simplycomputers2@yahoogroups.com
> > <mailto:simplycomputers2%40yahoogroups.com>, "Clint \"From Flint\"
> > Williams" <clintfromflint@> wrote:
> > >
> > > It seems that your inverter has went bad. They are simplw to replace
> > and fairly inexpensive usually on ebay. You can go to youtube and
> > search for a tutorial for your make and model on how to replace that
> > inverter.....
> > >
> > > Sent via my Samsung Galaxy Prevail from Boost Mobile
> > >
> > > SamBarr <Sam@> wrote:
> > >
> > > >I have a laptop with the same problem. You now have a "desktop".
> > > >
> > > >I can see the characters on the laptop screen but they are not
> > back-lit.
> > > >
> > > >You don't want to attempt to replace the display. If it is a loose
> > > >wire you would be fortunate but it is not worth replacing the display.
> > > >
> > > >You can hook up a monitor, keyboard and mouse and it will be a fine
> > > >desktop. Just not portable.. I need a keyboard because the dead
> > > >display gets in the way of the external monitor. I just moved the
> > > >laptop out of the way like a desktop.
> > > >
> > > >Sam Barr
> > > >
> > > >--- In simplycomputers2@yahoogroups.com
> > <mailto:simplycomputers2%40yahoogroups.com>, "strippergirl2525"
> > <strippergirl2525@> wrote:
> > > >>
> > > >> Hey I hope someone can help me. I have a HP laptop with Vista OS.
> > The screen will not lite up but when I plug another monitor into it
> > then you can see whats on the computer but the laptop screen does not
> > work. Can someone tell me what the problem is and is there a way that
> > I can fix this myself since I dont have a lot of money to take it to
> > the shop.
> > > >>
> > > >
> > > >
> > >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
http://tech.groups.yahoo.com/group/simplycomputers2
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