How to remove thin lines on LG 47LK520 screen?
- GgrayjessicaSep 23, 2025
If thin lines appear in the background of the screen of your LG LCD TV, check the video cable connections.

How to remove thin lines on LG 47LK520 screen?
If thin lines appear in the background of the screen of your LG LCD TV, check the video cable connections.
Why does my LG LCD TV turn off suddenly?
If your LG LCD TV turns off unexpectedly, consider these potential causes: * Check the power control settings to ensure the power supply isn't being interrupted. * See if the Auto sleep feature is enabled in the Time settings. * Note that the TV will automatically turn off after 15 minutes of inactivity if there is no signal.
Why does the image appear slowly on my LG LED TV?
If the image appears slowly when you turn on your LG LED TV, note that the image is muted during the product startup process, which is normal. If the image still doesn't appear after a few minutes, unplug the TV for 30 seconds and try again.
What to do if LG LCD TV says this file is invalid?
If your LG LCD TV displays the message “This file is invalid” or the audio is working normally but the video is not, check whether the file is playing normally on a PC to ensure it is not damaged. Also, verify that the resolution, video/audio codec, and frame rate are supported by the TV.
How to fix no sound on LG 47LK520?
If you are not getting any sound but the images are displaying on your LG LCD TV, try the following: 1. Press the VOL + or - button to adjust the volume. 2. Ensure the sound isn't muted by pressing the MUTE button. 3. Try switching to other channels, as the broadcast itself may have issues. 4. Check that the TV Speaker feature is enabled in the menu options.
What to do if my LG 47LK520 LCD TV screen is extremely dark?
If your LG LCD TV screen appears extremely dark even when the power is on, try adjusting the brightness and contrast settings in the menu.
What to do if LG 47LK520 LCD TV displays “Unsupported Audio”?
If your LG LCD TV displays the message “Unsupported Audio” or the video works but the audio doesn't, check the following: * Ensure the file plays correctly on a PC to verify it's not damaged. * Check whether the audio codec is supported. * Check whether the bit rate is supported. * Check whether the sample rate is supported.
How to adjust phase setting on LG LCD TV?
If you're experiencing horizontal noises or blurry characters on your LG LCD TV, try adjusting the Phase setting in the menu option.
Why doesn't the file appear on the Movie List of my LG 47LK520?
Check whether the extension is supported.
What to do if my LG 47LK520 LCD TV has horizontal or vertical bars or images blur?
If you're seeing horizontal or vertical bars, or blurry images on your LG LCD TV, check for local interferences from devices like electrical appliances or power tools.
| Product color | Black |
|---|---|
| LED indicators | Power, Stand-by |
| Panel mounting interface | 200 x 200 mm |
| Display diagonal | 47 \ |
| Display technology | LCD |
| Native aspect ratio | 16:9 |
| Native refresh rate | 120 Hz |
| Supported video modes | 1080i, 1080p, 720p |
| Contrast ratio (dynamic) | 150000:1 |
| Screen format adjustments | 4:3, Zoom |
| Supported graphics resolutions | 1920 x 1080 (HD 1080) |
| Number of OSD languages | 4 |
| On Screen Display (OSD) languages | ENG, ESP, FRE, KOR |
| HDMI ports quantity | 3 |
| SCART ports quantity | 0 |
| Card reader integrated | No |
| USB 2.0 ports quantity | USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them. |
| Digital audio optical out | 1 |
| Component video (YPbPr/YCbCr) in | 2 |
| Sustainability certificates | ENERGY STAR |
| Smart modes | Cinema, Game, Standard, Vivid |
| Tuner type | Analog |
| Number of tuners | 1 tuner(s) |
| Analog signal format system | NTSC |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50 - 60 Hz |
| Power consumption (standby) | 0.1 W |
| Power consumption (typical) | 250 W |
| RMS rated power | 20 W |
| Depth (with stand) | 269.2 mm |
|---|---|
| Width (with stand) | 1137 mm |
| Height (with stand) | 756.2 mm |
| Weight (with stand) | 20320 g |
| Depth (without stand) | 76.2 mm |
| Height (without stand) | 685.8 mm |
| Weight (without stand) | 18200 g |
Ensure the earth ground wire is connected to prevent possible electric shock.
The power outlet must remain readily accessed for unplugging the device.
Guidelines for safe and comfortable viewing of 3D content to avoid eye strain or other issues.
Avoid displaying fixed images for extended periods to prevent permanent screen disfigurement.
Equipment complies with FCC Rules for digital devices and interference.
Check product box for included items and contact dealer if any are missing.
Identifies and describes the function of physical buttons and remote control sensors on the TV.
Provides precautions for safely lifting, moving, and transporting the TV to prevent damage.
Instructions for placing the TV on a pedestal stand or mounting it on a table or wall.
Steps for connecting the TV to an antenna, cable, or cable box for viewing.
Guides through the initial setup process, including language and basic settings.
How to control the TV and use various buttons while viewing content.
Customizes frequently used menus for quick access to settings like aspect ratio and picture mode.
Explains how the TV displays 3D content and the need for compatible 3D glasses.
Important precautions and guidelines for safely wearing and using 3D glasses.
Details on the optimal viewing distance and angle for experiencing 3D imaging.
Overview of accessing and navigating the main menu options for customization.
How to set up, tune, and edit TV channels for optimal viewing.
Adjusts image size, quality, and effects for the best viewing experience.
Customizes sound quality, effects, and volume levels for different listening preferences.
Illustrates how to connect various external devices to the TV's back panel ports.
Transmits digital video and audio signals using an HDMI cable for high-quality display.
Connects analog video and audio signals using component cables for enhanced analog output.
Steps for connecting a PC to the TV for use as a computer monitor.
Connects USB flash drives or external hard drives for multimedia playback.
Accesses and navigates photo, music, or movie lists from connected USB devices.
Plays video files from a USB storage device using the TV's playback controls.
Displays image files from a USB storage device with slideshow and rotation options.
Addresses common general problems like remote control issues, no image/sound, or sudden power off.
Solutions for video-related issues such as poor color quality, image blur, or afterimages.
Troubleshooting steps for issues with movie playback, file compatibility, and subtitles.
Instructions for cleaning the TV screen, frame, cabinet, and power cord safely.
Advice on avoiding permanent screen disfigurement from prolonged static images.
Technical details on the remote control's IR signal waveform and frame configuration.
A comprehensive list of remote control commands and their corresponding hexadecimal codes.
How to connect an external control device via RS-232C for product function control.
Details on 7-wire and 3-wire RS-232C configurations for serial connections.
A list of commands, their codes, and data parameters for controlling the TV externally.
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