LG MiniBeam Owner's Manual page 160

I see vertical lines in all four directions on the screen, or colors are blurred
when I try to connect to HDMI.
• (Q. Settings)
Set Just Scan to Off.
Just Scan
shows you the original image as it is. You may see noise in all four
directions on the screen if the signal contains noise.
The screen is blank or the image is blurred when an HDMI cable is used.
•
Check that the HDMI® cable meets the required standards. If it is not a certified
HDMI® cable, the screen may flicker or may not display anything.
•
Check that the cable is properly connected. Improper connection may cause
screen flicker.
Picture Aspect Ratio Settings
109
Just Scan