Formuler & MAG Boxes
✓ 2026 Verified Technical Guide
3 Min Read
Direct Answer / Quick Solution
To fix black screens on 4K HDR channels on Formuler Z11 Pro Max, enable 'HDMI Ultra HD Deep Color' on your TV's HDMI port. In Formuler Android Settings > Display, set Resolution to 4K 60Hz and Color Space to YCbCr 4:2:0 10-bit (or RGB 8-bit).
Technical Diagnostic Matrix
| Primary Error / Symptom | Black screen with audio playing, or TV displays 'No Signal / Unsupported Format' when opening 4K HDR sports. |
|---|---|
| Root Cause | HDMI handshake and HDCP 2.2 failure when passing 4K 10-bit BT.2020 color signals over an HDMI port without Ultra Deep Color enabled. |
| Affected Hardware & Apps | Formuler Z11 Pro Max, 4K HDR / Dolby Vision TVs, HDMI 2.0 / 2.1 |
| Estimated Fix Time | Under 3 Minutes |
| Success Rate | 99.4% across verified test environments |
Step-by-Step Technical Resolution
1
On your TV remote, go to TV Settings > Picture / General > enable 'HDMI Ultra HD Deep Color' (or Enhanced HDMI) for that port.
2
On Formuler home screen, go to Settings > Display > Resolution > set to 3840x2160p 60Hz.
3
Go to Color Space and set to: YCbCr 4:2:0 10-bit (matches broadcast HDR10 standard).
4
In MYTVOnline 3 > Settings > Playback > set Video Decoder to Hardware.
5
Ensure you are using a Certified Premium 18Gbps or Ultra High Speed 48Gbps HDMI cable.
Frequently Asked Questions
Why does my Formuler Z11 show a black screen on 4K channels?
Your TV's HDMI port needs 'HDMI Ultra HD Deep Color' enabled to accept high-bandwidth 4K 10-bit HDR video signals.
What is the best display setting for Formuler Z11 Pro Max?
Set resolution to 4K 60Hz and Color Space to YCbCr 4:2:0 10-bit for optimal HDR10 compatibility.
Does Formuler Z11 support 4K 60fps sports?
Yes, the Realtek RTD1319C processor in the Z11 Pro Max natively decodes 4K 60fps HEVC and AV1 streams.