2) Bad Pixels
Hi Fred, In a recent issue , you wrote "So, the broad
generalization is that higher contrast ratios are better, just
as higher resolutions are generally better. But--- and it's a
huge 'but'--- don't buy any LCD just on specs. You really need
to see it with your own eyes to know what will be OK to you
over hours and hours and hours of viewing."
There is one thing you should warn your readers about, when
buying, is the guarantee on how many pixels must be faulty
before your screen gets replaced.
I found this warning on Toms Hardware:
Best regards, Tony Wolfs
That's right, Tony. Few vendors promise that desktop or laptop LCD
panels will be perfect: Some pixels on a brand-new LCD screen may be
permanently off (showing as black spots); or stuck on one color (all
red, or blue, or green); or stuck at one brightness (brighter or dimmer
than the surrounding pixels.)
Many vendors use a simple count to determine whether a screen may be
returned for replacement. If your screen has fewer than, say, 10 dead
malfunctioning pixels, they may refuse to replace the unit.
Mathematically, that may seem OK: After all, on a screen with millions
of pixels, a few bad ones is only a tiny percentage. But just as
tiny defect--- a pebble in your shoe--- can ruin a walk in a park, even
one or two dead pixels in the wrong part of your screen can ruin your
And it's not a matter of being oversensitive: A bad pixel may
as a period, comma, or other punctuation mark, for example, causing
reading or editing problems; or similarly may affect image editing or
So, Tony's point is a good one: See what the return/refund policy is on
any LCD or laptop you buy to ensure that you can at least exchange the
unit if it has dead or malfunctioning pixels.
I experienced this firsthand when I bought my 18inch LCD last year.. I almost go screwed on this deal, as I found a dead pixel dead center in the middle of the LCD screen I bought.. not knowing about this finicky LCD policy I took it back, and got this same story fed to me by the customer service rep, not being the one to take blah blah blah's lightly, I asked him to produce a company statement concerning this,
He brought another maker's policy out, because they didn't have a Mitsubishi maker contract or statement concerning the pixel policy..
Yours truly left with a new LCD, that I had them allow me test in the store before I took it home. Now my LCD is dead pixel free!!! hehehehe
and the next LCD I buy, I will definitely test it before I take it home. Lessons learned.
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