Seeing horizontal or vertical lines on your TV screen can be annoying and make it hard to watch anything. These lines may appear due to loose connections, display settings, or internal panel issues. Many times, the problem can be fixed at home with simple steps.
In this guide, you’ll learn why lines appear on TV screens and easy fixes to remove them.
Common TV Line Problems
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Vertical lines on screen
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Horizontal lines across display
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Colored lines (red, green, blue)
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Lines appear on one side only
Why TV Lines Appear
Some common reasons include:
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Loose or damaged HDMI cable
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External device display issue
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Incorrect picture settings
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Software glitches
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Panel or T-Con board issue
Fix 1: Check HDMI & Video Cables
Loose or faulty cables cause lines.
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Unplug and reconnect HDMI cables
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Try a different HDMI port
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Replace damaged cables
Fix 2: Test Another Input or Source
Identify if issue is from TV or device.
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Switch HDMI input
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Test with another device (console, cable box)
Fix 3: Reset Picture Settings
Incorrect settings cause display issues.
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Settings → Picture
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Reset to default mode
Fix 4: Update TV Software
Fixes display bugs.
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Go to Settings → Software Update
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Install latest update
Fix 5: Power Cycle the TV
Clears internal glitches.
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Turn off TV
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Unplug for 2 minutes
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Plug back in and turn on
Fix 6: Gently Press Screen Edges (Temporary)
Helps detect panel issues.
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Gently press near lines
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If lines change, panel issue likely
When to Call a Technician
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Lines appear on all inputs
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Lines remain after factory reset
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Screen panel damage suspected
