LG 55SK9500PUA Owner's Manual page 14

Abnormal Display
• If the TV feels cold to the touch, there may be a
small flicker when it is turned on. This is normal;
there is nothing wrong with TV. Some minute
dot defects may be visible on the screen,
appearing as tiny red, green, or blue spots.
However, they have no adverse effect on the
TV's performance. Avoid touching the LCD
screen or holding your finger(s) against it for
long periods of time. Doing so may produce
some temporary distortion effects on the
screen.
• This panel is an advanced product that contains
millions of pixels. In a very few cases, you could
see fine dots on the screen while you're viewing
the TV. Those dots are deactivated pixels and do
not affect the performance and reliability of the
TV.
• Displaying a still image for a prolonged period of
time may cause an image sticking. Avoid
displaying a fixed image on the TV screen for a
extended length of time.
Generated Sound
• Cracking noise A cracking noise that occurs
when watching or turning off the TV is
generated by plastic thermal contraction due to
temperature and humidity. This noise is
common for products where thermal
deformation is required.
• Electrical circuit humming/panel buzzing A low
level noise is generated from a high-speed
switching circuit, which supplies a large amount
of current to operate a product. It varies
depending upon the product. This generated
sound does not affect the performance and
reliability of the product.
• When cleaning the product, be careful
not to allow any liquid or foreign objects to
enter the gap between the upper, left or right
side of the panel and the guide panel,
(Depending upon model).
• Make sure to wring any excess water or cleaner
from the cloth.
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• Do not spray water or cleaner directly onto the
TV screen.
• Make sure to spray just enough of water or
cleaner onto a dry cloth to wipe the screen.