LG 20MT45A Owner's Manual page 50

50
TROUBLESHOOTING
Video
Problem
An image displays in black
and white or the color
quality is poor.
Horizontal or vertical bars
appears or images blur.
Lines or streaks appear on
images.
Afterimages (ghosts)
appear when the product
turns off.
The power is on but the
screen appears extremely
dark.
"No Signal" appears on the
screen.
Black spots appear on the
screen.
The display offset is wrong.
Thin lines appear in the
background of the screen.
The reception on some
programme is poor.
Adjust the color setting in the menu option.
y
Keep a sufficient distance between this product and other
y
electronic products.
Scroll to other programme. There may a problem with the
y
broadcast.
Check if there are local interferences such as an electrical
y
appliance or power tool.
Check the antenna or aim the antenna to the proper direction.
y
Pixels may have been damaged from a fixed image displayed
y
for a long time (image burn). Use a screen saver to prevent the
pixel damage on the screen.
Adjust the brightness and contrast in the menu option.
y
Check if the signal cable is connected between the TV and
y
products properly.
Check the selected input source by pressing INPUT.
y
Several pixels in red, green, white, or black may appear on the
y
screen that can attribute to the characteristics of the panel.
This is normal.
y
Adjust the position setting in the Picture menu.
y
Check if the video card resolution and frequency are supported
y
by the product. If the frequency is out of range, set to the
recommended resolution using the display settings on the
external device.
Check the video cable connections.
y
Scroll to other programme. There may a problem with the
y
broadcast.
The station signal may be weak. Aim the antenna to the proper
y
direction.
Check if there is local interferences such as an electrical
y
appliance or power tool.
Solution