Fix Samsung TV Horizontal Lines On Screen

If you are experiencing horizontal lines on your Samsung LED/LCD screen, it could mean that there are issues with the source board.

This post will show you how to fix this problem in 4 easy steps!

Quick Answer: If your Samsung TV is still under warranty, call customer service to see if they can help with this issue.

Make sure that the input source (HDMI, Video, PC, etc.) is selected correctly and that all of the cables are properly connected. Try disconnecting and reconnecting the cables to see if that resolves the issue.

However, if you have been experiencing horizontal lines on-screen with your TVs, read on for some quick and easy ways to fix it yourself.

While this problem can sometimes be caused by a faulty cable box or satellite dish, there are several things you can do before calling in a technician. Read below for five simple solutions to the problem!

Also Read: How to Fix Samsung Smart TV HDMI ARC not Working

What Causes Of Horizontal Lines on TV Screen

samsung tv horizontal lines on screen
samsung tv horizontal lines on screen

Samsung TV lines are a common problem that can be frustrating to deal with.

There are several reasons why your Samsung TV shows these horizontal lines on the screen when you turn it on.

The most common issue is related to the display of the TV, but there may also be an issue with your cable box or HDMI cables.

Below are a few reasons why a Samsung TV will have lines.

1. Damage on Display Panel:

If you see horizontal lines on your TV screen, it’s probably because the display panel or screen is damaged.

However, this isn’t always the case. There are other factors that can cause these lines to appear. In order to determine if your TV has a problem with its panel or screen, it needs to be thoroughly checked by an expert before anything else is done.

2. Issue With Input Cables:

Is your TV screen displaying horizontal lines? If so, this is not a problem with the TV itself.

The issue might be that the HDMI cable on your Smart Hub or Smart TV is loose or unplugged. Here are four different ways to fix the problem:

  • Unplug and plug in the HDMI cable again.
  • If it’s loose, change out the cable for one of higher quality.
  • Disconnect other devices from the power source to free up more power for your TV or use an extension cord if necessary.
  • Try moving closer to your Wi-Fi router.

3. Image Resolution Issue:

It’s probably because the image resolution is different from the display size.

The TV can’t load properly. One quick way to fix this is to change the image resolution of your TV.

4. Out-of-date Firmware:

When you get a new TV, it is important to update the firmware. Old versions can cause problems with your TV’s graphics display and may be unable to process higher-resolution pictures.

Plus, there are always new features that come out periodically that you will miss out on if you don’t update your firmware!

6 Easy Ways To Fix Samsung TV Horizontal Lines On Screen

There are a few things that could be causing this issue, so we’ve created a troubleshooting guide for you to follow along with and fix it yourself!

Method 1: Check the Line

We have seen many TVs with the lines on the screen shaking. If you are experiencing this, then there are two possible reasons for your TV’s problem.

First, check if the line is stable or not to know what it will take to fix your TV.

If they’re not stable, then it means that your display panel needs to be replaced by a technician.

On the other hand, if they are shaking, there might be an issue with the HDMI cable. Make sure you’ve checked all of these points and make any changes needed!

Method2: Soft reset the TV

This will clear any temporary glitches that may be causing the problem. To soft reset a Samsung TV, follow these steps:

1. Turn off the TV.

2. Unplug the TV from the power outlet.

3. Wait for 60 seconds.

4. Plug the TV back into the power outlet.

5. Turn on the TV.

Method 3: Update Your TV Firmware

If you’ve been experiencing a horizontal line on your TV, and the HDMI cable has been checked, it may be time to update the firmware.

Our technicians have seen this issue before and were able to solve it by updating the TV’s firmware.

The first step is to check for new software updates and update to the latest version. Doing so will likely fix your problem!

Follow the steps below to update the firmware on your Samsung TV.

Step 1: Press the ‘Home’ button on your remote control.

Step 2: Go to ‘Settings’ and ‘Support’ from the options.

Step 3: Select ‘Software Update’. If there is new software available, you will find the ‘Update Now’ option.

Step 4: Select ‘Update Now’ to commence the download process.

Step 5: To complete the process, follow the instructions on your screen.

Method 4: Carry Out A Picture Test

One of the most important features of a Samsung Smart TV is the Picture Test.

This self-diagnosis feature can be used to check whether your display image is compatible with your TV. It also helps troubleshoot and fix display-related problems on your TV.

Follow the steps below to complete a picture test:

Step 1: Press the ‘Home’ button on your TV remote control.

Step 2: Select ‘Settings’ from the option.

Step 3: Choose ‘Support’ and ‘Device Care’ from the options.

Step 4: Wait for your TV to perform a ‘Quick Scan’. The process may take a couple of minutes to complete the scan.

Step 5: Select ‘Self Diagnosis’ on the screen option.

Step 6: Finally, select ‘Picture Test’ and ‘OK’.

Method 5: Turn off Energy Saving Mode

This setting can sometimes cause lines to appear on the screen. To turn off the energy-saving mode on a Samsung TV, follow these steps:

Step 1: Press the Menu button on your remote control.

Step 2: Select General.

Step 3: Select Eco Solution.

Step 4: Select Energy Saving.

Step 5: Select Off.

Method 6: Factory Reset

This is a common error and the cause of this problem could be on either the graphic driver or TV source. To fix this issue, we recommend performing a factory reset on your TV before you do anything else.

While it might seem like an extreme measure, don’t worry because all data will be cleared and you’ll have to reconfigure everything from scratch afterward anyway! Here are the steps for doing so:

Step 1: Press the ‘Home’ button on your TV remote.

Step 2: Click on Settings.

Step 3: Select the General option.

Step 4: Choose Reset.

Step 5: Please enter your PIN or 0000.

Step 6: Then select Reset.

Step 7: By selecting OK, you will complete the reset.

The Reset option will also be available under Settings > Support > Self Diagnosis.


We hope this post has helped you to identify the issue and figure out how to fix Samsung TV Horizontal Lines On Screen. If you’re still not sure, we can help! Let us know if there’s anything else we can do for you. Until then, happy viewing!

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