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ENGLISH
Troubleshooting
Cannot control the TV with the remote control.
•
Check the remote control sensor on the product and try again.
•
Check if there is any obstacle between the product and the remote
control.
•
Check if the batteries are still working and properly installed (
to , to ).
No image display and no sound is produced.
•
Check if the product is turned on.
•
Check if the power cord is connected to a wall outlet.
•
Check if there is a problem in the wall outlet by connecting other
products.
The TV turns off suddenly.
•
Check the power control settings. The power supply may be
interrupted.
•
Check if the auto-off function is activated on the settings related
time.
•
If there is no signal while the TV is on, the TV will turn off
automatically after 15 minutes of inactivity.
When connecting to the PC (HDMI), no signal is detected.
•
Turn the TV off/on using the remote control.
•
Reconnect the HDMI cable.
•
Restart the PC with the TV on.
Abnormal Display
•
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 colour 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.
•
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 on 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.
Summary of Contents for UM78 Series
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