How to turn on HDMI on Xiaomi TV: all ways and solutions to problems

Connecting devices via HDMI to a Xiaomi TV seems like a simple task — just plug a cable and wait for an image. However, in practice, users face no signal, a black screen or a message “No device.” The reasons are not only the faulty cable, but also the wrong settings of the TV itself. In this article, we will analyze all possible scenarios, from basic port activation to solving hidden problems with firmware and compatibility.

Feature of Xiaomi TVs (series Mi) TV 4/4S/4A/5/5X/Q1/Q2/C2 Automatically detecting connected devices, but if you use rare permissions (e.g, 4K@120Hz), older consoles or PCs with non-standard output parameters, you may need to manually configure. HDMI, Hidden functions such as Game Mode or signal delay correction.

Basic method: selection of signal source

The most obvious, but often ignored, step is to choose the right input source, so even if the cable is connected, the TV can stay in TV or AV mode.

• 📺 On the Xiaomi remote, press the button SOURCE (or INPUT on some models).
• 🔍 In the menu that appears, select the port. HDMI 1, HDMI 2 or HDMI ARC (if you're connecting the sound system).
• ⚡ If the image doesn’t appear, try switching to another port – sometimes the TV doesn’t see the device in the first slot.

On PatchWall models, the path may be different: Settings → Devices → HDMI. Auto-Switch HDMI is also available here – turn it on so that the TV can identify the active source.

2. Verification of physical connection

If the TV doesn't respond to the source switch, the problem may be in the cable or the port.

• 🔌 Cable HDMI: Use a certified High Speed cable (for the purpose of using the 4K) Ultra High Speed (for example, for Ultra High Speed) 8K/120Hz). Cheap Chinese cables often don’t support high resolution.
• 🔄 Port port HDMI: Check the jack on the TV, if there's any bent contacts or debris. Try connecting to another port.
• 🖥️ Source Device: Make sure the console/PC is on and transmits the signal. On the PC, check the output settings (Win)+P → Duplicate or only the second screen).

On Xiaomi’s Q2/Q2 Pro TVs, the HDMI 2.1 port (usually labeled as eARC) supports 4K@120Hz and VRR, but requires a cable with a bandwidth of ≥48 Gbps. If the image flickers or disappears, this is a sign of bandwidth shortage.

⚠️ Attention: On Mi models TV 4A (2018-2019) port HDMI 3 often works unstable due to hardware defect.If possible, use HDMI 1 HDMI 2.

3. Setup of permission and frequency of update

Xiaomi TVs sometimes "don't see" the signal if the resolution or frame rate of the source device is not supported. For example, the PS5 defaults to output 4K@60Hz, but on older Mi TV 4 models, this can cause artifacts.

1. On the source device (PC/set-top box) set the standard resolution of 1920×1080 at 60 Hz.
2. On the TV, go to Settings → Display and Sound → Screen Resolution and select Auto.
3. If the image is there, but it is blurry, turn on Sharpness at the level of 30-50%.

For gamers, on HDMI 2.1 models (such as Mi TV Q2 75), Game Mode is available.

Settings → Display and sound → Image mode → Game

This reduces the input delay to ~10 ms (versus ~30 ms in standard mode).

4. Update firmware and reset settings

If HDMI-The port had previously been operational, but Suddenly stopped recognizing the devices, the fault could be outdated firmware or a failure in settings:

1. Go to Settings → About TV → System Update.
2. Click Check Updates and wait for the download (on a stable internet).
3. After the update, reboot.

Xiaomi’s firmware models below MIUI TV 3.0 (released before 2020) may not support HDMI-CEC, which means consoles do not control the TV, so the solution is to upgrade to the latest version or use the original Xiaomi remote.

If the update doesn’t work, reset your HDMI settings:

Settings → Devices → Reset HDMI settings → Confirm

⚠️ Attention: Xiaomi TVs with PatchWall reset HDMI-settings also resets the bindings of the remotes and sound parameters ARC/eARC. After the procedure, you will need to reconfigure the sound system.

5. Sound Problem Solving via HDMI (ARC/eARC)

If there's an image but no sound, the problem may be with the HDMI ARC (Audio Return Channel) settings, which is true when you connect sound bars or receivers.

• 🔊 On the TV menu: Settings → Sound. → Sound output → HDMI ARC.
• 🎵 On the soundbar: turn on the mode ARC or TV Sound (see device instruction manual).
• 🔄 Use a High Speed cable with Ethernet support – it is mandatory for eARC (extended) ARC for Dolby Atmos).

On the Mi TV Q2 and later, the Passthrough option is available to enable:

Settings → Sound → Additional → HDMI Mode → Passthrough

This will allow you to transfer uncompressed formats like Dolby TrueHD or DTS:X to external acoustics.

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If there is a sound, but with a delay (lipsinc), in the TV sound settings, reduce the AV Sync Adjustment setting (usually in the range of -200 to +200 ms).

6.Hidden HDMI features on Xiaomi TV

In addition to basic settings, Xiaomi TVs offer additional options for power users:

• 🎮 Regime. ALLM (Auto Low Latency Mode: Automatically switches the TV to Game Mode when a game console is detected. → Display and sound → Additionally. → ALLM.
• 🖥️ Color space correction: If the colors look dull, set RGB Full instead of Limited in the settings HDMI Source devices (for example, on a PC in the control panel) NVIDIA/AMD).
• 🔄 Fast Switching: Accelerates the change of signal sources. Activates in Settings → Devices → HDMI → Quick switching.

On Google TV models (such as the Xiaomi TV A Pro), an HDMI-CEC feature called Bravia Sync or Simplink is available, which allows you to control all connected devices from one remote control, to enable:

Settings → Devices → HDMI-CEC → Enable

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If the TV doesn't respond to console commands (such as the PS5), disable HDMI-CEC on the console or update its firmware. Conflicts between CECs of different brands are a common problem.

7. Diagnostics of hardware malfunctions

If none of these methods helped, a hardware breakdown is possible. HDMI-port or motherboard:

• 🚨 The TV does not respond to any device in a particular port (try all connectors).
• 🔥 The smell of burning or the ports are heated.
• 🔧 Image disappears after 5-10 minutes of operation (chip overheating) HDMI).

For diagnosis:

1. Connect the device to another TV – if it works, the problem is Xiaomi TV.
2. Check the port for oxidized contacts (relevant for wet rooms).
3. If the TV is guaranteed, contact the service center. HDMI-Ports require rations and often result in loss of warranty.

⚠️ Attention: On Xiaomi TVs with a connector HDMI+MHL (Like Mi. TV 3S) Connecting smartphones through an adapter MHL It can cause a port to fail due to overload.

FAQ: Frequent questions about HDMI on Xiaomi TV