Sony Bravia XR and X Series TVs often display "No Signal" messages or drop video quality due to HDMI handshake failures. The root cause is Sony's Enhanced HDMI Signal Format setting, which must be enabled individually for each HDMI port to handle 4K and HDR content properly.
Quick Answer
- Enable Enhanced HDMI Signal Format: Settings → Channels & Inputs → External Inputs → HDMI Signal Format → Enhanced Format
- Set this for each HDMI port you're using with 4K devices
- Update firmware to latest version: Settings → System → About → System Software Update
- Use the correct port: Connect devices to HDMI 3 or 4 (labeled "4K 120Hz")
- OLED models: Check Settings → Display & Sound → Audio Output → eARC Mode → Auto
Symptoms
- "No Signal" message appears when connecting devices
- Picture flickers or goes black intermittently
- 4K content drops to 1080p resolution
- HDR content appears washed out or doesn't display
- PS5 games won't show HDR or run at 120Hz
- Audio cuts out or doesn't work through eARC/ARC
Quick Checks
- Verify cable connection: Ensure HDMI cable is fully inserted
- Try different port: Test HDMI 3 or 4 first (these support full HDMI 2.1)
- Check source device: Confirm your device outputs 4K/HDR
- Test another cable: Use a certified Ultra High Speed HDMI cable
- Power cycle: Unplug TV for 30 seconds, then reconnect
Step-by-Step Fix
- Press the Settings button on your Sony TV remote
- Navigate to Channels & Inputs → External Inputs
- Select HDMI Signal Format
- Choose the HDMI port your device is connected to (HDMI 1, 2, 3, or 4)
- Set to Enhanced Format (or Enhanced Format - Dolby Vision for PS5)
- Repeat for each port you use with 4K/HDR devices
- For OLED models (A80L, A95L): Go to Settings → Display & Sound → Audio Output → eARC Mode → Auto
- Update firmware: Settings → System → About → System Software Update → Check for updates
- Restart both devices: Turn off TV and source device, wait 30 seconds, power on TV first
If No Signal Still Appears
Try a different HDMI cable: Some older cables can't handle 4K60Hz or HDR10. Use an Ultra High Speed HDMI Cable (paid link) that supports 48Gbps bandwidth.
Reset HDMI settings: Settings → System → Reset → Reset to factory defaults (this erases all settings).
Check specific model issues: X90L and X95L models had HDMI 2.1 bandwidth bugs. Update to firmware version 6.0 or later.
Disable HDMI-CEC temporarily: Settings → Channels & Inputs → External Inputs → BRAVIA Sync Settings → BRAVIA Sync Control → Off. Test connection, then re-enable.
For gaming consoles: Match your console's output settings to the TV's capabilities. PS5 should be set to 4K120Hz with HDR when using Enhanced Format (Dolby Vision).
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FAQ
Q: Why does Sony require Enhanced Format to be enabled per port? A: Enhanced Format increases HDMI bandwidth from 10.2Gbps to 18Gbps (or 48Gbps for HDMI 2.1). Sony disables this by default to ensure compatibility with older devices that might not handle the higher bandwidth.
Q: Which HDMI ports support 4K120Hz gaming? A: HDMI 3 and 4 on most Sony Bravia XR/X models support full HDMI 2.1 features including 4K120Hz, VRR, and ALLM. HDMI 1 and 2 are typically limited to HDMI 2.0 speeds.
Q: Should I use Enhanced Format or Enhanced Format (Dolby Vision)? A: Use Enhanced Format (Dolby Vision) for devices that support it, like PS5, Xbox Series X, or Apple TV 4K. Use standard Enhanced Format for other 4K devices.
Q: My eARC audio keeps cutting out. How do I fix this? A: Set eARC Mode to Auto in audio settings, enable Enhanced Format on the eARC port (usually HDMI 3), and ensure your soundbar firmware is updated. Try switching the TV's Digital Audio Out to PCM if Dolby/DTS causes issues.