Plasma TV Problems
When we are talking about plasma tv problems,
we are really concerned about plasma glass problems.
Plasma tv's are comprised of two main components, the glass or
the screen, and the electronics.
You can expect to have as many problems with plasma tv electronics
as you would with any piece of electronic equipment, which on the
whole, won't be a lot, and even if you do have problems, they should
be repairable.
A screen of Plasma glass on the other hand is a sealed unit on
which it is seldom possible to do any repairs, total replacement
being the normal course of action. Not a cheap solution.
The good news is that the reliability and quality of Plasma tv
glass has improved dramatically over the last couple of years, but
there are still a few plasma problems that, while not as dire as
some reports indicate, you should be aware of in order to protect
your non inconsiderable investment in your plasma display.
Stuck Pixels
Pixels can be stuck permanently off, in which case they will always
be black on your screen, or permanently on, in which case they will
always be red, green or blue. Luckily enough, in most case, this
is not a condition that develops over time, but rather a manufacturing
fault that you just need to check for when you power your plasma
up for the first time.
Vendors and manufacturers policy towards stuck pixels are a bit
of a gray area, many claiming 3 or 4 stuck pixels being within specs.
Find out your vendors policy towards stuck pixels before you purchase.
Personally, I expect a vendor to guarantee all of the pixels to
work. The thing is, once you have even one stuck pixel, you just
can't help looking for it anytime you have the screen on.
Plasma Tilt
It is not recommended that a plasma be laid face down or face up
when it is mounted or while it is being shipped as this can crack
the glass. Most plasmas will be packed in a box with a tilt indicator.
You are within your rights to refuse any delivery where the tilt
indicator shows more than 30 degrees.
Plasma burn in
The whole plasma screen is gradually being burnt in, as is any
phosphor based screen, from the moment you turn it on. If this happens
evenly, as it does with normal randomly changing pictures, you will
not notice any difference on a day to day or even month to month
basis.
Static images, such as channel logos, computer icons, Internet
browser frames on the other hand, get burnt in to the screen because
they are displayed constantly (they literally burn out or age the
associated phosphors prematurely, causing them to glow less brightly).
Manufacturers have weighed in with a few automatic measures to
prevent plasma tv burn in. Pixel Orbiting and Auto Pixel Shift slowly
move the picture around the screen so that static images don't stay
in the same place. The best defense though is to be aware of the
possibility of plasma burn in and not leave static images on your
plasma screen for extended periods of time.
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