Why Are There Lines on My Samsung TV Screen?

Discover how to fix horizontal, vertical, or flickering lines on your Samsung TV screen caused by software glitches, signal issues, or hardware problems.

If you're seeing lines, flickering, or missing pixels on your Samsung TV screen, it could be due to software issues, signal problems, or hardware concerns. Follow these steps to diagnose and resolve the issue effectively.

1. Why Are There Lines on My Samsung TV Screen?

Lines on your Samsung TV screen can occur due to several reasons:

- Software glitches or outdated firmware

- Signal interference from HDMI cables or external devices

- Hardware issues such as damaged panels or faulty internal components

- Overheating or power supply problems

2. How to Perform a Picture Test on Your Samsung TV

Running a Picture Test helps determine if the issue is software-related or requires hardware repair.

1. Press the Home button on your remote.
2. Navigate to Settings > Support > Device Care.
3. Select Self Diagnosis and choose Picture Test.
4. Follow the on-screen instructions to complete the test.

Note: If Device Care or Self Diagnosis is grayed out, close any apps running in the background.

3. Additional Things to Check

Before contacting support, try these troubleshooting steps:

- Check for software updates: Go to Settings > Support > Software Update > Update Now.

- Inspect HDMI cables: Ensure cables are securely connected and replace damaged ones.

- Test with another source: Connect a different device to rule out signal issues.

- Power cycle your TV: Unplug the TV for 60 seconds, then plug it back in.

4. Supported Samsung TV Models

The Picture Test and troubleshooting steps apply to most Samsung TV models from 2015 onwards, including:

- QLED Series (Q60A, Q70B, Q80C, etc.)
- Neo QLED Series (QN90B, QN95C, etc.)
- Crystal UHD Series (AU8000, AU9000, etc.)
- Frame Series (LS03B, LS05B, etc.)

5. When Updates May Not Appear

Software updates might not appear if:

- Your TV is already running the latest firmware.

- The update server is temporarily unavailable.

- Your internet connection is unstable or too slow.

6. Related Samsung Support Topics

- How to troubleshoot HDMI signal issues on Samsung TVs

- How to update Samsung TV software manually

- How to reset your Samsung TV to factory settings