LG DM2350D Owner's Manual page 108

If the following symptoms occur, recheck the system. It may not be malfunction.
Operational problem
❐
ꕢ Cannot view certain channels.
• Adjust the location or orientation of the antenna.
• Save the desired viewing channels on
ꕢ After turning on the TV, there is a delay before full images appear.
• This is normal because an image deletion process was inserted to clean up image
noises that may occur immediately after the power is turned on.
Auto Tuning or Channel Edit.