- HDMI port not HDMI 2.0/HDCP 2.2
- Non-high-speed HDMI cable
- TV HDR/enhanced-HDMI setting off
Problem Description
You want to configure HDR settings on your Roku Express 4K for the best picture quality. HDR requires a compatible TV with an HDMI 2.0a+ port and HDR enabled in the TV's HDMI settings. The Roku Express 4K supports HDR10, HDR10+, and Dolby Vision depending on the model. This guide covers connecting to the right port, enabling HDR, and testing.
Why This Happens in Real Homes
Getting HDR working on the Roku Express 4K+ takes a chain of things all being right: an HDMI 2.0 / HDCP 2.2 port on the TV, a high-speed HDMI cable, the TV's HDR or "enhanced HDMI" (deep color) setting enabled for that port, and the Roku's display type set to the HDR option. Miss any link and HDR silently falls back to SDR.
In the Roku's Settings > Display type, confirm it detects and is set to a 4K HDR option, then enable the TV's enhanced-HDMI/HDR setting for that specific port and use a certified high-speed cable in an HDMI 2.0 port. Remember HDR also needs HDR content and, on some services, a plan that includes it. Update the Roku software, and the HDR badge appears when the whole chain lines up.
Symptoms
- Configuring HDR on the Express 4K+
- HDR not showing
- Washed-out or dim HDR
- Display type won't set to HDR
- HDR only on some apps
- Color/brightness off
- HDR10/HDR10+ questions
- No HDR badge
Recognize these? Here's what usually causes it.
Common Causes
- HDMI port not HDMI 2.0/HDCP 2.2
- Non-high-speed HDMI cable
- TV HDR/enhanced-HDMI setting off
- Display type not set correctly
- Content isn't HDR / plan doesn't include it
- TV picture mode not HDR-capable
- Firmware out of date
- Cable/port bandwidth limit
Most fixes happen in the first 3 steps.
Streaming devices can overheat if placed in enclosed TV cabinets without ventilation. Ensure there is airflow around the device. Do not stack other devices on top of a streaming box. Overheating causes performance degradation, random restarts, and shortened device lifespan.
Tools & Requirements
These tools will help you complete this fix.
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Step-by-Step Solution
Connect to a 4K HDR-compatible HDMI port
The Roku Express 4K+ supports 4K HDR10 and HDR10+ output. Connect it to an HDMI port on your TV that supports HDCP 2.2 and 4K HDR. Most modern 4K TVs label these ports as HDMI 2.0 or HDMI 2.1. Some TVs only support 4K HDR on specific ports (often HDMI 1 or 2). Check your TV manual for which HDMI ports support HDR passthrough. Using a non-HDR port limits output to 1080p SDR.
Enable 4K and HDR in Roku settings
On the Roku, go to Settings > Display Type. The Roku should auto-detect your TV's capabilities and set the display type to 4K HDR. If it shows 1080p: try manually selecting 4K HDR10. If the option is grayed out: the current HDMI port or cable does not support 4K HDR. Try a different HDMI port. The included HDMI cable supports 4K — if using your own cable, make sure it is a Premium High-Speed HDMI cable.

Needed for this step
3FT USB C to USB C Cable 2-Pack, Fast Charging ...
This helps complete the fix you are currently reading.
$12.99Check HDR content is actually playing in HDR
Not all content is available in 4K HDR. On Netflix, look for the 'HDR' or '4K Ultra HD' badge on the title. On Disney+, Amazon Prime, and Apple TV+, HDR titles are similarly marked. While HDR content plays, the Roku displays a small HDR indicator on screen (briefly). Your TV may also show an HDR badge or switch to HDR mode visibly (colors may look different as the TV enables its HDR tonemapping).
Adjust HDR picture settings on the TV
Once HDR content plays, adjust your TV picture settings for HDR (these are separate from SDR settings on most TVs). Set Picture Mode to Cinema or Movie. Increase backlight/brightness to near maximum — HDR is designed for high brightness. Disable motion smoothing (often called TruMotion, Motionflow, or Auto Motion Plus) for a cinematic look. Each streaming app may trigger HDR differently, so check settings for each.
Fix washed-out or too-dark HDR picture
If HDR content looks washed out or too dark: your TV's HDMI port may need 'Enhanced' mode enabled. On Samsung: Settings > General > External Device Manager > HDMI UHD Color > On. On LG: Settings > General > HDMI Ultra HD Deep Color > On. On Sony: Settings > TV Inputs > HDMI > Enhanced Format. Without this setting, the TV clips the HDR signal and colors appear incorrect. After enabling, restart the Roku.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If this comes back after following these steps, check whether a recent app or firmware update reset a default setting — the fix works, but the setting gets reverted silently.
["Some TV HDMI ports dont support 4K", "Look for ARC or enhanced HDMI port", "Roku auto-detects best settings"]
This issue almost always looks more complex than it is — the majority of cases trace back to a single setting, a stale credential, or a default that shipped wrong.
- HDMI port not HDMI 2.0/HDCP 2.2
- Non-high-speed HDMI cable
- TV HDR/enhanced-HDMI setting off
- Display type not set correctly
- Content isn't HDR / plan doesn't include it
Before you go — try one of these (they fix most cases).
Official Manufacturer Manual
Roku provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Roku Express 4K+.
Source: support.roku.com
Need More Help? Roku Support
Note: The contact information below connects you directly to Roku's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.


