LG 42LA690S User Guide

28

MAINTENANCE / TROUBLESHOOTING

Clean your TV regularly to keep the best performance and to extend the product lifespan.

 

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.

 

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.

 

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.

Remove the accumulated dust or dirt on the power cord regularly.

Cannot control 

the TV with the 

remote control.

 

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  ).

No image display 

and no sound is 

produced.

 

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.

The TV turns off 

suddenly.

 

y

Check the power control settings. The power supply may be interrupted.

 

y

Check if the Auto sleep 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.

When connecting 

to the PC (HDMI 

DVI), ‘No signal’ 

or ‘Invalid Format’ 

is displayed.

 

y

Turn the TV off/on using the remote control.

 

y

Reconnect the HDMI cable.

 

y

Restart the PC with the TV on.