LG 49UT577H0UA Guide De Configuration Rapide page 25

• 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.
• 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.
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