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Hardware

Submission + - LCD's and pixel warranties

phorm writes: As more and more devices are coming out with dense-pixel displays, it seems that the "x dead pixel" clause in warranties has become prolific with all vendors. Specifically, the clause states that the vendor will only consider a unit defective if the LCD has a certain amount (usually 4-5, but often it's specific as to certain amounts in different parts of the LCD) of dead pixels.

An LCD with a dead pixel is a problem. 2-3 dead pixels would to most be considered a fairly obvious defect.

How is it that the manufacturers get to say what constitutes a real defect or not? We don't have clauses on new cars that say "engine is not considered defective unless 2 or more pistons are seized", so what is it considered acceptable for LCD's.
Moreover, for a new-in-box product, how enforceable are these terms (which are generally not clearly available on packaging)?

For a fee, various suppliers offer anti no-dead-pixel-on-delivery warranty. If the issue is so common, why do people seem to accept it (and what's your recourse if you don't).

Lastly, when dense-pixel displays are often so dense that the human eye can't perceive a single pixel, how do you tell how many are dead (especially when a single "white" pixel is comprised of at least 3 component colors).

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