LG 42LK550 Owner's Manual - Page 121

Problem, Resolution, INPUT, Video, Movie

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TROUBLESHOOTING 121 ENEGNLGISH Video Problem Resolution An image displays in black and white or the color quality is poor. yyAdjust the color setting in the menu option. yyKeep a sufficient distance between this product and other electronic products. yyScroll to other channels. There may a problem with the broadcast. Horizontal or vertical bars appears yyCheck if there are local interferences such as an electrical appliance or power or images blur tool. Lines or streaks appear on images yyCheck the antenna or aim the antenna to the proper direction. Afterimages (ghosts) appear when yyPixels may have been damaged from a fixed image displayed for a long time the product turns off (image burn). Use a screen saver to prevent the pixel damage on the screen. The power is on but the screen appears extremely dark. yyAdjust the brightness and contrast in the menu option. "No Signal" appears on the screen. yyCheck if the signal cable is connected between the TV and products properly. yyCheck the selected input source by pressing INPUT. Black spots appear on the screen. yySeveral pixels in red, green, white, or black may appear on the screen that can attribute to the characteristics of the LCD panel. This is normal. The display offset is wrong. yyAdjust the position setting in the Picture menu. yyCheck 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 yyCheck the video cable connections. of the screen. Horizontal noises appear or characters blur. yyAdjust the Phase setting in the menu option. Refer to the "SCREEN (RGB-PC)". The reception on some channels is poor yyScroll to other channels. There may a problem with the broadcast. yyThe station signal may be weak. Aim the antenna to the proper direction. yyCheck if there is local interference such as an electrical appliance or power tool. Movie Problem Resolution The file does not appear on the Movie List. yyCheck whether the extension is supported. Message is displayed saying "This file is invalid" or the audio is working normally but the video is not working normally. yyCheck whether the file is playing normally on a PC. (Check whether the file is damaged.) yyCheck whether the resolution is supported. yyCheck whether the video/audio codec is supported. yyCheck whether the frame rate is supported. Message is displayed saying "Unsupported Audio" or the video is working normally but the audio is not working normally. yyCheck whether the file is playing normally on a PC. (Check whether the file is damaged.) yyCheck whether the audio codec is supported. yyCheck whether the bit rate is supported. yyCheck whether the sample rate is supported. Subtitle is not working. yyCheck whether the file is playing normally on a PC. (Check whether the file is damaged.) yyCheck whether the video file and subtitle file name are the same. yyCheck whether the video file and subtitle file are located in the same folder. yyCheck whether the subtitle file is supported. yyCheck whether the language is supported. (When you open the subtitle file in Memo Pad, you can check the language of the subtitle file.)

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Video
Problem
Resolution
An image displays in black and
white or the color quality is poor.
y
Adjust the color 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.
Horizontal or vertical bars appears
or images blur
y
Check if there are local interferences such as an electrical appliance or power
tool.
Lines or streaks appear on images
y
Check the antenna or aim the antenna to the proper direction.
Afterimages (ghosts) appear when
the product turns off
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
Adjust the brightness and contrast in the menu option.
“No Signal” appears on the screen.
y
Check if the signal cable is connected between the TV and products properly.
y
Check the selected input source by pressing
INPUT
.
Black spots appear on the screen.
y
Several pixels in red, green, white, or black may appear on the screen that can
attribute to the characteristics of the LCD panel.
This is normal.
The display offset is wrong.
y
Adjust the position setting in the Picture menu.
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
Check the video cable connections.
Horizontal noises appear or
characters blur.
y
Adjust the Phase setting in the menu option.
Refer to the “SCREEN (RGB-PC)”.
The reception on some channels is
poor
y
Scroll to other channels. There may a problem with the broadcast.
y
The station signal may be weak. Aim the antenna to the proper direction.
y
Check if there is local interference such as an electrical appliance or power
tool.
Movie
Problem
Resolution
The file does not appear on the
Movie List.
y
Check whether the extension is supported.
Message is displayed
saying “This file is invalid” or the
audio is working normally but the
video is not working normally.
y
Check whether the file is playing normally on a PC. (Check whether the file is
damaged.)
y
Check whether the resolution is supported.
y
Check whether the video/audio codec is supported.
y
Check whether the frame rate is supported.
Message is displayed saying
“Unsupported Audio” or the video
is working normally but the audio is
not working normally.
y
Check whether the file is playing normally on a PC. (Check whether the file is
damaged.)
y
Check whether the audio codec is supported.
y
Check whether the bit rate is supported.
y
Check whether the sample rate is supported.
Subtitle is not working.
y
Check whether the file is playing normally on a PC. (Check whether the file is
damaged.)
y
Check whether the video file and subtitle file name are the same.
y
Check whether the video file and subtitle file are located in the same folder.
y
Check whether the subtitle file is supported.
y
Check whether the language is supported. (When you open the subtitle file in
Memo Pad, you can check the language of the subtitle file.)
121
ENG
ENGLISH
TROUBLESHOOTING