LG 47LT360C User Manual

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Image problems
SETTINGS
Customer Support 
Picture Test
Run an Picture Test first to verify that the image signal output is normal.
If there is no problem with the test image, check connected external devices and 
the broadcast signal.
 
ꕢ Images from previous programme or other programmes linger or the screen 
displays annoying lines.
•  Adjusts the orientation of the antenna to the TV transmitter, or refer to the manual 
for instructions on connecting the antenna.