LG 42LS3400 User Manual
Page 67
ENGLISH
67
TROUBLESHOOTING
Video
Problem
Solution
An image displays in black and
white or the color quality is poor.
y
y
Adjust the color setting in the menu option.
y
y
Keep a sufficient distance between this product and other electronic products.
y
y
Scroll to other channels. There may a problem with the broadcast.
Horizontal or vertical bars appears
or images blur
y
y
Check if there are local interferences such as an electrical appliance or power
tool.
Lines or streaks appear on images
y
y
Check the antenna or aim the antenna to the proper direction.
Afterimages (ghosts) appear when
the product turns off
y
y
Pixels may have been damaged from a fixed image displayed for a long time
(image burn). Use a screen saver to prevent the pixel damage on the screen.
The power is on but the screen
appears extremely dark.
y
y
Adjust the brightness and contrast in the menu option.
“No Signal” appears on the screen.
y
y
Check if the signal cable is connected between the TV and products properly.
y
y
Check the selected input source by pressing
INPUT.
Black spots appear on the screen.
y
y
Several pixels in red, green, white, or black may appear on the screen that can
attribute to the characteristics of the panel.
y
y
This is normal.
The display offset is wrong.
y
y
Adjust the position setting in the Picture menu.
y
y
Check if the video card resolution and frequency are supported by the product.
If the frequency is out of range, set to the recommended resolution using the
display settings on the external device.
Thin lines appear in the background
of the screen.
y
y
Check the video cable connections.
The reception on some channels is
poor
y
y
Scroll to other channels. There may a problem with the broadcast.
y
y
The station signal may be weak. Aim the antenna to the proper direction.
y
y
Check if there is local interferences such as an electrical appliance or power
tool.