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Fix a TV that has banding

We'll rule out source and cable, adjust picture settings, then help you decide if the panel is the cause or when to call a pro.

Troubleshooting · Home electronics
10–30 min
What you'll need
  • TV remote
  • HDMI cable (to test or replace)
Step 1 of 5

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Steps

Goal: Rule out source and cable, adjust settings, then decide if the panel is the cause.

  • Switch between HDMI inputs and built-in apps. Confirm whether banding appears on all sources.
  • Good: You know if it is source-specific. Proceed to Check source and cable.
  • Bad: Unclear—test with a gradient or gray screen from multiple sources.

Check source and cable

Goal: Rule out the source device and HDMI cable as the cause.

  • Reseat the HDMI cable at both ends. Try a different cable—preferably HDMI 2.0 or 2.1 for 4K. A loose or low-quality cable can cause banding.
  • Try a different HDMI port. Check the source device output settings—set to 10-bit or 12-bit if supported.
  • Good: Cable reseated or replaced. Banding improves. Done.
  • Bad: Banding persists on all sources—proceed to Adjust picture settings.

Adjust picture settings

Goal: Reduce banding with TV settings.

  • Reduce sharpness—high sharpness can exaggerate banding. Try Cinema or Movie mode.
  • Adjust gamma if available—slightly lower gamma can hide banding in shadows.
  • If OLED, run the pixel refresher from Settings (follow manufacturer schedule).
  • Good: Banding reduced. Done.
  • Bad: Banding severe—check warranty or call a technician.

When to get help

Call a TV repair technician if:

  • Banding is severe on all sources after cable and setting changes.
  • The panel may be faulty—check warranty for replacement.
  • Out of warranty—replacement may cost more than a new TV.

Verification

  • Banding reduced or confirmed as panel-related.
  • Cable and source ruled out.
  • Picture settings adjusted.
  • Warranty checked if banding is severe.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm source Test multiple sources—if only one has banding, source or cable is at fault.
  2. Cable and port Reseat cable; try different cable and port.
  3. Picture settings Reduce sharpness; adjust gamma and picture mode.
  4. Call a pro Severe banding on all sources—check warranty or call technician.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Whether banding appears on all sources
  • TV model and serial number
  • Steps already tried

Does banding appear on all sources?

If only one source has banding, the source or cable may be at fault.

Switch between HDMI inputs and built-in apps. All sources: panel or settings—adjust settings, check warranty. One source only: source or cable—reseat cable, try different cable.

Yes No

You can change your answer later.

Reseat cable and try different cable

Loose or low-quality cable can cause banding.

Reseat HDMI at both ends. Try a different cable—preferably HDMI 2.0 or 2.1. Check source output settings (10-bit if supported). Improved: done. Same: panel may be the cause—adjust settings or check warranty.

Yes No

You can change your answer later.

Adjust picture settings

Sharpness and gamma can exaggerate or hide banding.

Reduce sharpness. Try Cinema or Movie mode. Adjust gamma if available. Improved: done. Same or severe: check warranty—panel may need replacement.

Yes No

You can change your answer later.

Check warranty

Document with photos. Contact manufacturer. Severe banding may be covered. If out of warranty, replacement may cost more than a new TV.

Done

Done

Banding reduced or accepted.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a TV have banding?
Low-quality HDMI cable, source device outputting limited color depth, or panel manufacturing variance. Banding in gradients (e.g. skies) is common; some panels show it more than others.
Can I fix TV banding myself?
Yes. Check the cable, try a different source, and adjust picture settings. If banding comes from the panel, it cannot be fixed—only reduced with settings or accepted.
When should I call a technician for banding?
If banding is severe and visible on all sources after cable and setting changes, the panel may be faulty. Check warranty; some manufacturers replace panels with excessive banding.

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