How to perform an autoscan on a LG TV
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NOTE: The steps to perform this procedure may be different depending on your TV model. ALWAYS refer to the User's Guide for your specific TV for complete information.  
1. Press the Home or Menu button on the remote
2. Select Setup or Settings
3. Select Channel
4. Select Auto Tuning or Auto Program
5. Select Start
Note: It is important to allow the device to completely scan to 100%. If the device is not allowed to search for all available stations, some could be missing from the channel list