[Tfug] LCD monitor failures

[Choprboy]

On Friday 15 August 2008 20:50, Bexley Hall wrote:
> Hi, John,
>
> --- On Fri, 8/15/08, John Karns <johnkarns at gmail.com> wrote:
> > On 8/14/08, Bexley Hall <bexley401 at yahoo.com> wrote:
> > > >From time to time, I notice "dark areas" in the
> > >
> > > display.  Not "black", just "reduced brightness".
> > >
> > > I belive these are areas where the glass has been
> > > deformed (due to mishandling by user).  Can anyone
> > > confirm this?
> >
> > I've yet to encounter the problem myself, but I would
> > guess (and a WAG at that) that it could be dust / dirt
> > contamination of a reflective plane at the back of the LCD.
>
> <frown>  I'd find that hard to believe given how they are
> built, etc.  The "damaged" areas *look* like the glass has
> been deformed by something like a finger (like the display was
> squeezed in that spot).


It is not the glass itself that has been damaged, but the light diffuser 
behind the glass. There is a membrane on the back side of the glass which 
redirects light toward the user from the cold cathode tubes at the top/bottom  
of the LCD. Pressure on the face, hitting, or jarring shocks all damage the 
membrane resulting in more or less light being transmitted thru the affected 
area. You can try taking the LCD apart and "fixing" it... but I think your 
unlikely to have success.

Adrian