LG 42LM615T User Manual page 91

PC connection problem (Only for models supporting PC
❐
connection)
ꕢ The screen display does not come on after connecting to the computer.
• Make sure that the computer and the TV are securely connected.
• Check whether the resolution is correctly set for PC input.
• To use the TV as a secondary monitor, check if the connected desktop or laptop
supports dual monitor display.
ꕢ There is no sound after connecting the computer with the HDMI cable.
• Check with manufacturer of your video card to ensure it supports HDMI voice output.
(Video cards in DVI format require connection of a separate sound cable.)