LG 37LV550T Owner's Manual page 132

132
TROUBLESHOOTING
Video
Problem
An image displays in black and
white or the colour 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 ap-
pears 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.
Horizontal noises appear or charac-
ters blur.
The reception on some channels
is poor
Adjust the colour setting in the menu option.
y
Keep a sufficient distance between this product and other electronic products.
y
Scroll to other channels. There may a problem with the broadcast.
y
Check if there is local interference such as an electrical appliance or power
y
tool.
Check the antenna or aim the antenna to the correct direction.
y
Pixels may have been damaged from a fixed image displayed for a long time
y
(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 products properly.
y
Check the selected input source by pressing INPUT.
y
Several pixels in red, green, white, or black may appear on the screen that can
y
attribute to the characteristics of the panel.
This is normal.
Adjust the position setting in the menu option.
y
Check if the video card resolution and frequency are supported by the product.
y
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
Adjust the Phase setting in the menu option.
y
Refer to the "SCREEN".
Scroll to other channels. There may a problem with the broadcast.
y
The station signal may be weak. Aim the antenna to the correct direction.
y
Check if there is local interference such as an electrical appliance or power
y
tool.
Resolution