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Troubleshooting S85F HDR calibration issues involves checking settings, performing power resets, and using Samsung's built-in calibration tools. Here's a step-by-step guide:
Step 1: Enable Input Signal Plus
If HDR content looks dim or has poor picture quality, ensure Input Signal Plus is enabled:
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Go to Settings → General & Privacy → External Device Manager → Input Signal Plus
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Select the HDMI port connected to your HDR device (PS5, Xbox, PC)
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Turn it On
Step 2: Perform a Power Reset (Most Reliable Fix)
Many S85F HDR issues are resolved by a hard power reset:
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Unplug the power cable from the TV (not just the wall)
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Wait 10 seconds
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Plug it back in and turn the TV on
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Test HDR content again
This fix has been reported to resolve HDR issues permanently for many users.
Step 3: Factory Reset (If Problem Persists)
A factory reset can fix HDR calibration problems, though the issue may return after 1–2 weeks:
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Go to Settings → General & Privacy → Reset
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Enter your PIN if required
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Confirm the reset
Note: You'll need to log into all apps again after this.
Step 4: Use Samsung Smart Calibration
Samsung's Smart Calibration app optimizes picture quality using your smartphone:
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Install the SmartThings app on your smartphone
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Connect TV and phone to the same Wi-Fi router
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Open SmartThings and select Smart Calibration
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Choose between:
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Basic Mode (15–30 seconds)
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Professional Mode (5–8 minutes, more accurate)
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Place your phone's rear camera 1–3cm from the white rectangle onscreen
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Follow the guide until complete
After calibration, Picture Mode changes to Movie (Calibrated).
Step 5: Adjust HDR Calibration Settings
Use these RTINGS-recommended HDR10 settings as a starting point:
| Setting | Value | |
|---|---|---|
| Picture Mode | FILMMAKER MODE | |
| Brightness | 50 (Max) | |
| Contrast | 50 (Max) | |
| Contrast Enhancer | Off | |
| HDR Tone Mapping | Static | |
| Color | 25 | |
| Color Tone | Warm2 | |
| Color Space | Auto | |
| Peak Brightness | High | |
| Sharpness | 0 |
For SDR/Moderately lit rooms, use Movie mode with Brightness set to 33 (≈200 nits).
Step 6: Toggle Signal Type (LUT Activation Fix)
If you're using professional calibration equipment and the 3D LUT isn't activating:
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Change pattern generator output from HDR to SDR
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Switch back to HDR
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Recheck measurements
This may activate the LUT temporarily.
Step 7: Check for Software Updates
Samsung may release firmware updates to fix HDR issues:
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Go to Settings → Support → Software Update → Update Now
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Install any available updates
Common HDR Issues and Solutions
| Issue | Solution | |
|---|---|---|
| HDR too dark | Enable Input Signal Plus, set Peak Brightness to High | |
| HDR looks worse after calibration | Power reset or factory reset | |
| HDR icon not appearing | Ensure content is native HDR; check HDMI port settings | |
| HDR flickering | Check HDMI cable quality, update firmware |
When to Contact Professional Repair
If these steps don't resolve the issue, the problem may be hardware-related (panel fault, T-con board issue, or power board problem). Contact TelevisionRepair.co.ke for Samsung S85F HDR calibration repair with Samsung-specific diagnostic tools and original parts.
The S85F HDR calibration issues are often firmware-related, and Samsung is working on updates to address them permanently.
