Troubleshooting - LG 40LF57 Series Owner's Manual

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 Automatic Standby(Depending on model) / Sleep
Timer / Off Time is activated in the TIME settings.
• 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' or 'Invalid Format' is
displayed.
• Turn the TV off/on using the remote control.
• Reconnect the HDMI cable.
• Restart the PC with the TV on.
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