[Macpartners] Powerbook Display problem

[Kerem B Limon]

It's more likely that the problem is what Jon's describing--I've also seen it on
Aluminum PowerBook models at work and they get really bad if left alone;
however, this is more like very, very light (almost white) "puddles" of pixels
that grow around the center and middle areas of the screen.

On the other hand, a "stuck" or "dead" pixel does not have to be black. Current
LCD technology is built on pixels that consist of three sub-pixels--red, green,
and blue, that are appropriately lit to replicate any color. Sometimes only a
sub-pixel or two fail, causing a "stuck" or "dead" pixel of another color. I've
see my share of red and green stuck pixels.

I don't recall off the top, but Apple, like many vendors these days, has a
craftily hidden dead pixel policy, something to the tune of "we will not
exchange if not more than n dead/stuck pixels in a x in. radius" or something.
Lookup on http://www.apple.com/support/ to verify.

Kerem


Quoting Jonathan Reed <jdreed at MIT.EDU>:

> Is this one of the "aluminum" powerbooks?  If so, there was a bad run 
> of those which had screen problems that match what you're describing. 
> Those bright dots of light will get bigger over time.  I can't seem 
> to find the info right now, I know it was on Slashdot and a couple of 
> other sites.  Regardless, give Apple a call ASAP - they can tell you 
> if your powerbook was one of the bad ones and replace the screen for 
> free.  I had this problem with my G4 15" AlBook, as did someone else 
> in my group, and that solution worked for us.
> 
> -Jon
> 
> At 8:34 AM -0400 9/24/04, William Litant wrote:
> >Was doing some graphics work on my new G4 15" Powerbook last night 
> >when I noticed 5 or 6 of what look like tiny very light gray dirt 
> >spots randomly scattered in the center of the screen. Closer 
> >examination reveals they are not dirt but some inherent problem with 
> >the display.
> >
> >They are quite light - most visible when working on a white 
> >background - but annoying. I'm aware that  actual dead pixles appear 
> >as black dots (had one on an iBook) but I haven't seen this gray dot 
> >business before. Any thoughts as to what may be causing this?
> >
> >Bill Litant
> >_______________________________________________
> >Macpartners mailing list
> >Macpartners at mit.edu
> >http://mailman.mit.edu/mailman/listinfo/macpartners
> 
> 
> -- 
> -------------------
> Jonathan Reed
> 
> jdreed at mit.edu
> -------------------
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Kerem B. Limon
kerem.limon at mit.edu /e-mail