All current LG-brand TVs have built-in composite cable ports that allow you to connect your LG TV set to a laptop computer. The most common video port found on laptop computers is the S-video port. Though some LG TVs have S-video connectability, the majority of LG TVs do not, so you will probably need an S-video to RCA-composite adaptor to connect your laptop computer to your LG TV.
Plug one side of the S-video cable into the S-video connection of the laptop computer, then plug the other side of the S-video cable into the S-video to RCA-composite adaptor. Look carefully at the S-video connections to position the plugs properly, in order to prevent damage to the plug.
Plug one end of the yellow composite cable into the yellow RCA composite port of the adaptor, then plug the other end of the RCA composite cable into the yellow RCA composite port of the TV. Unlike the S-video plug, the yellow RCA composite plug does not need to be inserted a certain way.
Plug the 3.5mm audio plug into the audio-out port of the laptop computer, then plug the red and white audio composite plugs into the matching coloured composite ports of the TV. This will transfer the audio from the computer to the TV, allowing you to control the volume from your TV's remote control.
Change the TV's input to "Video" using the LG TV's remote control. If the laptop's image does not display on the TV automatically, go to the desktop and right-click on any open space. A little menu will appear, hover the mouse over "Graphics Options" and hover the mouse over "Output to," then select "Monitor."