LG 98UH98 Series Owner's Manual page 30

Avoid touching the screen or holding your finger(s) against it for long
periods of time. Doing so may produce some temporary or permanent
distortion/damage to screen.
When cleaning the product and its components, unplug the power
first and wipe it with a soft cloth. Applying excessive force may cause
scratches or discolouration. Do not spray with water or wipe with a
wet cloth. Never use glass cleaner, car or industrial shiner, abrasives
or wax, benzene, alcohol etc., which can damage the product and
its panel. Otherwise, this may result in fire, electric shock or product
damage (deformation, corrosion or breakage).
As long as this unit is connected to the AC wall outlet, it is not
disconnected from the AC power source even if you turn off this unit
by SWITCH.
When unplugging the cable, grab the plug and unplug it, by pulling
at the plug.
Don't pull at the cord to unplug the power cord from the power board,
as this could be hazardous.
When moving the product, make sure you turn the power off first.
Then, unplug the power cables, antenna cables and all connecting
cables. The TV set or power cord may be damaged, which may create
a fire hazard or cause electric shock.
When moving or unpacking the product, work in pairs because the
product is heavy. Otherwise, this may result in injury.
6
Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power
supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been dropped.
If the product feels cold to the touch, there may be a small "flicker"
when it is turned on. This is normal, there is nothing wrong with
product.
This panel is an advanced product that contains millions of pixels.
You may see tiny black dots and/or brightly coloured dots (red, blue
or green) at a size of 1 ppm on the panel. This does not indicate a
malfunction and does not affect the performance and reliability of
the product.
This phenomenon also occurs in third-party products and is not
subject to exchange or refund.
You may find different brightness and color of the panel depending
on your viewing position(left/right/top/down).
This phenomenon occurs due to the characteristic of the panel. It is
not related with the product performance, and it is not malfunction.
Displaying a still image for a prolonged period of time may cause
image sticking. Avoid displaying a fixed image on the TV screen for a
long period 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 on the product.
This generated sound does not affect the performance and reliability
of the product.
Do not use high voltage electrical goods near the TV(e.g. electric
mosquito-swatter). This may result in product malfunction.