Roku Error Code 028 — Display Resolution Not Supported

What Does This Error Mean?

Roku error 028 means the display resolution your Roku is trying to output isn't supported by your TV or monitor. For example, your Roku might be set to 4K output, but your TV only supports 1080p. Or it might try 1080p when the TV needs 720p. The result is either a black screen, a distorted image, or this error code. The fix is usually adjusting the Roku's output resolution to match what your display supports.

Affected Models

Roku Express 4K
Roku Streaming Stick 4K
Roku Ultra
Roku TV
Roku Streambar Pro

Common Causes

Roku output resolution is set higher than the TV's maximum supported resolution
TV or monitor doesn't support the specific refresh rate (60Hz vs 50Hz) the Roku is using
Older TV with limited resolution support receiving an unsupported signal from a newer Roku
HDMI cable doesn't support the bandwidth required for the selected resolution (e.g., 4K HDR)
Automatic resolution detection failed during setup and Roku chose an incompatible setting

How to Fix It

Press the Home button on your remote 5 times, then press Fast Forward (FF) 3 times, then press Rewind (RW) 2 times. This resets the Roku's display output to the most basic resolution (480p). Your screen should show a picture again within a few seconds.

This key sequence is Roku's built-in 'screen recovery' shortcut. It works even if the screen is currently black from an unsupported resolution.
Once you can see the screen again, go to Settings > Display Type. The Roku will auto-detect your TV's supported resolutions. Select the recommended option, or pick the highest resolution your TV supports (check your TV manual for its maximum resolution).

If auto-detection doesn't work, manually select the resolution. For most modern TVs: 1080p 60Hz. For 4K TVs: 2160p (4K) at 60Hz.
If you want 4K and your TV supports it, verify your HDMI cable. 4K video (especially HDR) requires a 'Premium High Speed HDMI' or 'HDMI 2.0' cable. Standard HDMI cables from 2015 or earlier may not have the bandwidth for 4K output.

Check the packaging or cable markings — look for '18 Gbps' or 'Premium Certified.' If you're not sure, buy a new HDMI 2.1 cable for $8-$15.
Check your TV's picture settings for any overscan or resolution scaling options. Some TVs have a mode that adjusts the input signal to their native resolution automatically. Enabling 'Just Scan,' 'Screen Fit,' or 'Native Mode' in the TV's picture settings can resolve resolution mismatches.

TV manufacturers use different names for this setting: Samsung calls it 'Picture Size > Screen Fit.' LG calls it 'Aspect Ratio > Just Scan.' Sony calls it 'Screen > Display Area > Full Pixel.'
If you're connecting to a computer monitor or a projector (not a TV), check that device's specs carefully. Many computer monitors and older projectors have strict resolution requirements and don't support TV-standard resolutions like 1080i. Set the Roku to 1080p or 720p and see which the display accepts.

The Roku was designed primarily for TVs. Monitor and projector compatibility varies significantly.

When to Call a Professional

Error 028 never requires a technician. It's a settings mismatch between your Roku and TV. All fixes are done through the Roku's settings menu.

Frequently Asked Questions

My screen went black after changing Roku settings. Is that error 028?

Likely yes. When you change Roku to a resolution your TV can't handle, the picture disappears. Use the key sequence from Step 1 (Home x5, FF x3, RW x2) to reset back to a basic resolution. Your picture should return within 5 seconds. Then go to Settings > Display Type to choose the correct resolution for your TV.

Does using a lower resolution hurt my streaming quality?

If your TV is 1080p, setting Roku to 1080p gives you the best quality your TV can show — using a higher setting would be wasted. If your TV is 4K, using 1080p instead of 4K means you're not getting the full resolution, but the picture will still look good. Always match the Roku output to your TV's native resolution for best results.

What does 1080p, 4K, and 720p actually mean?

These numbers refer to vertical pixel count — how many rows of pixels make up the picture. 720p = 1,280 x 720 pixels (HD). 1080p = 1,920 x 1,080 pixels (Full HD) — the most common TV standard. 4K = 3,840 x 2,160 pixels (Ultra HD) — about 4x as detailed as 1080p. Higher is sharper, but your TV must support it.