LAPTOP FORUM

>A friend asked me to help after their laptop screen turned red,
> and it turned out to be a more subtle problem which I confess I
> cant diagnose at all. Im hoping someone can shed some light
> on the cause, and speculate as to whether its likely to
> get much worse in the near future.
>
> The problem is that certain colours - primarily shades of dark
> blue, but also a few others - are all being displayed as the
> same shade of solid red. Its very noticeable on the bootup
> screen, whose background changed from dark blue to solid red.
> On the desktop, its noticeable as a sort of red dust around
> icons and text, and a change in the colour of window bars (usually
> blue.) The effect can be seen more clearly in Windows XP by
> bringing up any of the menus which allows you to choose an
> arbitrary colour by moving sliders. These tend to display
> a complete continuous colour map, and one can see speckles
> of red in the centre of the dark blue area, and a few
> elsewhere.
>
> Its as if a small percentage of R,G,B values are being mapped
> into solid 255,0,0 by something in the display hardware.
> The problem seemed to come on all at once, and hasnt got worse
> in 3 weeks or so. The machine seems usable for most stuff
> except photo and video processing as long as you avoid
> blue-heavy colour schemes.
>
> Im not really expecting that this is sensible or even possible
> to fix in a laptop, but I would like to understand what is
> going on, and whether its likely to get much worse in the near
> future. Anyone recognise the symptoms or cause?
>
> TIA

> On Sat, 31 Mar 2007 13:51:55 +0100, Kevin ashley
> wrote:
>
>
>> Its as if a small percentage of R,G,B values are being mapped
>> into solid 255,0,0 by something in the display hardware.
>> The problem seemed to come on all at once, and hasnt got worse
>> in 3 weeks or so. The machine seems usable for most stuff
>> except photo and video processing as long as you avoid
>> blue-heavy colour schemes.
>
>
> 1st step make sure that someone hasnt turned the screen colours down to
> 256 or even 16.
>

> Ok first thing to do is to connect the laptop to an external monitor, now if
> the problem persists on the external monitor you know its the graphics card
> ar fault and you need to replace either the graphics card if its an add on
> or the worse case scenario is the motherboard , now if the display is ok on
> the external monitor then try reseating the flex cable at both ends of the
> LCD (Panel and motherboard) if that dont work replace the cable its self
> or if that fails to work then you need a new LCD panel.

> Kevin ashley wrote in message
> news:460e58c0$0$764$5a6aecb4@news.aaisp.net.uk...
>> A friend asked me to help after their laptop screen turned red,
>> and it turned out to be a more subtle problem which I confess I
>> cant diagnose at all. Im hoping someone can shed some light
>> on the cause, and speculate as to whether its likely to
>> get much worse in the near future.
>>
>> The problem is that certain colours - primarily shades of dark
>> blue, but also a few others - are all being displayed as the
>> same shade of solid red. Its very noticeable on the bootup
>> screen, whose background changed from dark blue to solid red.
>> On the desktop, its noticeable as a sort of red dust around
>> icons and text, and a change in the colour of window bars (usually
>> blue.) The effect can be seen more clearly in Windows XP by
>> bringing up any of the menus which allows you to choose an
>> arbitrary colour by moving sliders. These tend to display
>> a complete continuous colour map, and one can see speckles
>> of red in the centre of the dark blue area, and a few
>> elsewhere.
>>
>> Its as if a small percentage of R,G,B values are being mapped
>> into solid 255,0,0 by something in the display hardware.
>> The problem seemed to come on all at once, and hasnt got worse
>> in 3 weeks or so. The machine seems usable for most stuff
>> except photo and video processing as long as you avoid
>> blue-heavy colour schemes.
>>
>> Im not really expecting that this is sensible or even possible
>> to fix in a laptop, but I would like to understand what is
>> going on, and whether its likely to get much worse in the near
>> future. Anyone recognise the symptoms or cause?
>>
>> TIA
>
>