Maintenance & Troubleshooting - LG 55LB55 Series Owner's Manual

MAINTENANCE
Cleaning your TV
Clean your TV regularly to keep the best performance and to extend the product lifespan.
CAUTION
y Make sure to turn the power off and disconnect the power cord and all other cables first.
y When the TV is left unattended and unused for a long time, disconnect the power cord from the
wall outlet to prevent possible damage from lightning or power surges.
Screen, frame, cabinet and stand
y To remove dust or light dirt, wipe the surface with a dry, clean, and soft cloth.
y To remove major dirt, wipe the surface with a soft cloth dampened in clean water or a diluted mild
detergent. Then wipe immediately with a dry cloth.
CAUTION
y Avoid touching the screen at all times, as this may result in damage to the screen.
y Do not push, rub, or hit the screen surface with your fingernail or a sharp object, as this may
result in scratches and image distortions.
y Do not use any chemicals as this may damage the product.
y Do not spray liquid onto the surface. If water enters the TV, it may result in fire, electric shock,
or malfunction.
Power cord
Remove the accumulated dust or dirt on the power cord regularly.
TROUBLESHOOTING
Problem
Cannot control the TV
with the remote control.
No image display and
no sound is produced.
The TV turns off
suddenly.
When connecting to the
PC (HDMI), 'No signal'
or 'Invalid Format' is
displayed.
MAINTENANCE / TROUBLESHOOTING
Solution
y Check the remote control sensor on the product and try again.
y Check if there is any obstacle between the product and the
remote control.
y Check if the batteries are still working and properly installed
( to , to ).
y Check if the product is turned on.
y Check if the power cord is connected to a wall outlet.
y Check if there is a problem in the wall outlet by connecting
other products.
y Check the power control settings. The power supply may be
interrupted.
y Check if the Sleep Timer or Off Time feature is activated in
the TIME settings.
y If there is no signal while the TV is on, the TV will turn off
automatically after 15 minutes of inactivity.
y Turn the TV off/on using the remote control.
y Reconnect the HDMI cable.
y Restart the PC with the TV on.
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