Have you ever settled in for a relaxing evening of binge-watching your favorite show, only to be interrupted by annoying horizontal lines on your LG TV screen?
If so, you’re not alone. Countless LG TV owners have experienced this frustrating problem, and many have scoured the internet for a solution to no avail. But fear not, because we’re here to help you banish those pesky lines for good!
In this guide, we’ll take you step-by-step through the process of eliminating those distracting horizontal lines on your LG TV screen. No more squinting at your favorite scenes through a maze of lines – with our help, you’ll be able to enjoy your TV in all its crisp, clear glory.
Let’s get started!
What causes horizontal lines in LG Smart TV?
1. Input Cable Issue
One possibility is that the issue is caused by a loose or damaged HDMI cable.
The input cable connection issue is a common problem that can be easily resolved by checking the input HDMI cable connection.
To check the input cable connection, check that the input cable is connected to the correct input port.
If the issue still happens, try to reconnect the input cable to the correct input HDMI port. If the issue still happens, try another input port.
If the issue is still happening, try to connect another device to the input port to rule out the input port as the cause of the issue.
If the issue is still happening, service may be required.
2. Old Firmware Version
Another possibility is that there is an issue with the TV’s software. If there is an issue with the software, it can cause horizontal lines to appear on the screen.
Updating your TV’s firmware version should be done when there is a software update available.
A software update can include several fixes and improvements, which will improve your TV’s performance.
If you’re experiencing horizontal lines or other image problems, a software update may help you solve the problem.
3. TV Panel Issue
Another common cause is a problem with the TV panel. If there is a problem with the hardware, it can also cause horizontal lines to appear on the screen.
A panel issue is related to the screen of your TV. If your screen has suffered physical damage, you should take it to a technician for repair.
If you have a new TV, the screen maybe is just dirty or dusty.
Still, you need the help of a technician as you won’t be able to peek into the panel yourself and it is also not recommended to do it on your own.
Types of Horizontal Lines that can occur on LG Smart TV
Lines that can appear on your TV can be horizontal lines running horizontally across your TV’s width or they can be colored vertical lines running vertically on your LG TVs’ display screen.
Horizontal lines in LG Smart TVs can be of several types which are commonly seen in their TVs. These are one of the most commonly seen other tv screen problems.
These can occur in any LG Tv whether it is an LCD TV, LED TV, OLED TV, or QLED TV.
1. Horizontal green lines on the LG TV screen
The green lines on LG smart Tv screen are a common issue where the screen displays a green line on the sides of the screen.
These lines usually appear on the top and bottom of the display and are caused by a faulty or damaged panel of your screen.
However, to conclude whether it is a panel issue you need to first check with the troubleshooting steps to fix it.
If it is a panel issue, then the problem with remain until you replace the panel of your LG LED TV.
2. Horizontal black lines on LG TV screen
Horizontal Black lines occur in thin strips mostly on the bottom or top of the screen of LED TVs.
It can be in the form of a block of lines or a single line. Most of the time these are dead pixels or any other defect.
When a horizontal line appears on the screen of your LG TV, it can be either a problem with your TV, or it can be a problem with your cable or satellite box.
If the horizontal lines are not caused by the cable or satellite box, then the problem is with your LG TV. A black horizontal line is not always a panel issue.
Typically, this can be caused by a bad pixel or a bad connection on the screen.
How to Fix LG TV Horizontal Lines on Screen?
Verify the Lines are Permanent or Moving on LG TV
The first thing to do is to determine if the lines are a permanent part of the LED or LCD screen or if they are moving.
If they are permanent, then it’s a hardware (LCD) problem, so you’ll need to contact LG or take your set to a TV repair center.
If the lines are moving, then it’s a software (Firmware) problem and you can use the following steps to fix these lines.
Perform Picture Test Switching Input Source
Before you start to fix LG TV Horizontal Lines on Screen, you will want to run a picture test.
Your input source to your Tv might be having issues. You can switch your input source to another.
You can connect your Laptop by connecting the HDMI cable to it for a while and check the picture quality and whether it is showing the same horizontal lines on your LG Smart TV Screen.
Performing Power Cycle on LG TV
The Power cycle is an effective way of solving common tv problems. It is also a basic step to troubleshoot while you are trying to fix the horizontal lines either black or colored lines on LG TV’s display.
To perform the power cycle, you need to unplug the power cord from the power source and keep it disconnect for 15 mins and then restart again.
Reseat the Power Cable Connection
Check the power cable if it is plugged in properly.
To reseat the power cable connection, physically remove the LG TV plug from your electrical outlet or surge protector, wait for a minimum of 60 seconds, and then plug it back in.
Turn on the TV and see if the horizontal lines are still present. It is also possible that the power cable is damaged, so check that as well.
To check the power cable for damage, unplug the power cable from the LG TV and the electrical outlet or surge protector and inspect it for any visible damage, such as frayed wires or bent prongs.
In case your LG TV power cable is damaged, it needs to be replaced.
Check the HDMI cable
Another possible cause of horizontal lines on your LG TV screen is a loose or damaged HDMI cable. To check the HDMI cable, follow these steps:
- Turn off your LG TV and any connected devices.
- Unplug the HDMI cable from both the TV and the device.
- Inspect the HDMI cable for any damage, such as frayed wires or bent pins.
- If the HDMI cable appears undamaged, plug it back into both the TV and the device.
- Turn on the TV and the connected device and see if the horizontal lines are still present.
If the horizontal lines are still present, you may need to try other troubleshooting steps or contact LG support for further assistance.
Update Your LG TV Software to the Latest Version
If you’re experiencing horizontal lines on your LG TV screen, updating the TV’s software may help resolve the issue.
To update the software, start by pressing the “Home” button on your LG TV remote and navigating to “Settings.”
From there, select “All Settings” and then “General.” Scroll down and select “About This TV.” Then, select “Software Update” and choose “Update Now.”
Follow the on-screen instructions to complete the software update.
By updating your LG TV’s software through the menu, you may be able to fix the issue of horizontal lines on your screen and improve your overall viewing experience.
Factory Reset your LG Smart TV
If the TV screen problem persists even after updating to the latest firmware, it may be a hardware issue with the TV itself.
This will remove any settings that might have been updated on your TV, so you’ll have to do it before you make any changes to your TV.
If you want to restore your LG TV to its original settings, the steps you need to take will depend on the version of WebOS that your TV is using.
If your LG TV is running WebOS 6.0 or a newer version, you can reset it by following some simple steps. First, go to the Settings menu, then select All Settings, followed by General, System, and finally Reset to Initial Settings.
For those using WebOS 5.0, the process is slightly different. You’ll need to go to the Settings menu, select All Settings, then Support, and finally Reset to Initial Settings.
If your LG TV has an older version of WebOS, from Version 1.0 to 4.5, you’ll need to perform a factory reset. This can be done by going to the Settings menu, selecting All Settings, followed by General, and finally Reset to Initial Settings.
By following these simple steps, you can restore your LG TV to its original settings without any hassle.
Contact LG TV Customer Support
If you have tried the troubleshooting steps above and are still experiencing horizontal lines on your LG TV screen, it may be time to contact LG customer support for further assistance.
You can reach out to LG TV customer support through the following channels:
- Visit the LG USA Support Contact Page to find phone numbers, email addresses, and social media links for LG customer support.
- You can also reach out to LG TV customer support on Twitter by tweeting to @LGUSSupport.
When contacting LG customer support, be sure to have your TV model number and any relevant information about the issue you are experiencing on hand.
LG customer support representatives will be able to assist you with further troubleshooting steps or arrange for repair or replacement of your TV if necessary.
Advanced Troubleshooting Steps to Fix Horizontal Lines issue on Your LG TV
I apologize for the confusion earlier. Here are the internal hardware troubleshooting steps you requested:
Internal Hardware Troubleshooting Steps
If the basic and advanced troubleshooting steps mentioned above do not resolve the issue of horizontal lines on your LG TV screen, it is possible that there may be an internal hardware issue.
To perform these steps you need to connect with a TV repair expert and ensure that your LG TV is out of Warranty.
In this case, you can try the following internal hardware troubleshooting steps:
- Inspect the LG TV panel: Check the LG TV panel for any visible damage, such as cracks or scratches. If you find any damage, it may be necessary to replace the panel.
- Inspect the LG TV main board: Check the LG TV main board for any visible damage, such as burnt or swollen capacitors. If you find any damage, it may be necessary to replace the main board.
- Inspect the TCON board: Check the TCON board for any visible damage, such as burnt or swollen capacitors. If you find any damage, it may be necessary to replace the TCON board.
It is important to note that attempting any internal hardware troubleshooting steps can be risky and may cause further damage to your LG TV.
If you are unsure about any of the steps or do not feel comfortable performing them yourself, it is best to contact LG customer support for assistance.
Frequently Asked Questions
How do I fix horizontal lines on my LG TV?
What causes horizontal lines on LG TV screen?
Jefferson McCall is the tech-savvy co-founder of TechBullish, brings his passion for electronics to life through hands-on expertise. He has a deep understanding of embedded systems and consumer electronics from his decade of industry experience repairing and troubleshooting them. He spends time learning new and evolving technologies. Check Jefferson’s Crunchbase Profile here.
