12 Reasons Xiaomi Doesn't Connect to a TV - and How to Fix It

Why Xiaomi’s smartphone or console ignores your TV

You try to stream video from a Xiaomi Redmi Note 12 smartphone to the big screen, but the TV stubbornly doesn't respond to the connection. Or the Mi Box S box gives off a "No signal" error when connecting via a connection. HDMI. Problems connecting Xiaomi devices to TVs are one of the most frequent complaints of users, and there can be more than a dozen reasons for this: from banal settings to hardware malfunctions.

In this article, we will analyze all possible scenarios why Xiaomi equipment refuses to interact with the TV – whether it is a smartphone, tablet, console Mi. TV Stick or even a smart light bulb with a broadcast function, you will learn how to diagnose a problem by symptoms (for example, a black screen when connected to a computer). HDMI Often indicates incompatibility of permissions, not a cable breakage, which settings to check first, and when to contact the service center. MIUI, Block Wi-Fi Direct and common errors when using HDMI-to-USB-C adapters.

Important: the solutions in the article are relevant to all Xiaomi devices based on the MIUI 12-14 and Android TV 9-12, including 2020-2026 models.If your TV is older than 2018, some techniques (like Miracast) may not work due to a lack of support for modern protocols.

1.Problems with HDMI: Why is the cable connected, but no image

If you are using the Mi Box or Mi TV Stick, and the TV shows "No signal" or black screen, it's not always the cable that's to blame. HDMI-port.

Here is what you need to check first:

• 🔌 Reconnect the cable -- take it out of the ports for 30 seconds, then put it back in. Sometimes the contacts stick, especially if the connector is dusty.
• 📺 Change it. HDMI-port on the TV – many TVs have multiple inputs, and one of them may be damaged or configured to another source (e.g., a TV set or a TV set, HDMI-ARC sound-wise).
• 🔄 Reset the settings. HDMI On the console - go to the Settings → Display and sound → Additionally. → Reset HDMI.
• 🔍 Check the supported permissions – some older TVs don’t work with the 4K@60Hz, Which is the default choice of the Mi Box 4K.

If the image does not appear after these manipulations, try to force the permission to:

1. On the console, hold the consoles. OK + 5 seconds to open the recovery menu.
2. Choose Advanced Settings → HDMI mode.
3. Install. 720p or 1080p@50Hz (Even if your TV is supported 4K).

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If you have a Samsung TV or LG 2019-2020, try to turn on the mode HDMI-UHD Color in port settings. Without that, some Xiaomi consoles won't transmit a signal to the port. 4K.

Wi-Fi Direct and Miracast: Why the Smartphone Can't See TV

Wireless screen broadcasting (Miracast or Wi-Fi Direct) is a convenient way to duplicate Xiaomi's screen on a TV without wires, but often users are faced with the fact that devices "can't see" each other.

The main culprits are:

• 📵 Wi-Fi Direct is turned off on your TV – check the Network menu → Wi-Fi Direct or Screen → Wireless broadcasting.
• 🔒 Lockdown MIUI — In newer versions of the firmware, Miracast is hidden, so to enable it, you need to activate Developer Mode and allow Wireless Display in Settings. → Connections and sharing → Broadcasting.
• 🔄 Different Wi-Fi standards – if the TV only supports Wi-Fi 4 (802.11n), A smartphone is trying to connect over Wi-Fi 5/6, connection will not be established.

Instructions for Miracast on Xiaomi (relevant to the MIUI 13–14):

Activate Developer Mode (7 times press "Version" MIUI" on the telephone")

Go to "Settings" → Connections and sharing → Broadcasting"

Enable "Wireless Display" (wireless display)

Select the TV from the list (if not, restart both devices)-->

If the TV is not on the list, try alternative methods:

• 📱 Use the Google Home app to stream (supports Chromecast and many smart TVs).
• 🖥️ Connect through DLNA (For example, through the LocalCast or BubbleUPnP app).

3. Protocol incompatibility: Why the new Xiaomi doesn't work with old TVs

If your TV is released before 2017, chances are it just doesn't support modern connectivity protocols.

• 📅 HDMI 1.4 vs HDMI 2.0 — The old TVs don't understand 4K@60Hz or HDR10, Which is the default Mi Box 4K.
• 🔌 No Wi-Fi Direct – many TVs until 2016 only support Miracast 1.0, which is incompatible with the new Xiaomi smartphones.
• 🔊 Problems with HDCP — if the TV does not support HDCP 2.2, Netflix and other services will not work even if you successfully connect.

Solutions for outdated TVs:

⚠️ If your TV is not supported HDCP 2.2, some applications (e.g. Disney)+ Amazon Prime Video will be a mistake. 0x8004C01A Even if you're connected successfully, there's no solution, just replacing the TV or using an external one. TV-supportive HDCP 1.4 (e.g. Xiaomi Mi Box 3).

4. Software failures: when firmware or settings are to blame

Often the problem is not hardware, but software, and these are the typical symptoms of failure:

• 🔄 The TV is connected, then disconnected in 10-20 seconds.
• 📱 On the smartphone Xiaomi there is an error “failed to connect to the device".
• 🖥️ The Mi Box is constantly restarted when the broadcast is launched.

What to do:

1. Update the firmware on both devices: On your smartphone: Settings → The phone. → System update. On the console: Settings → About the device → Update of the PO.

Reset the network settings

• On a smartphone: Settings → Wi-Fi → Additionally. → Resetting network settings.
• On the console: Settings → Network and Internet → Wi-Fi reset.
• Clear the cache of the apps responsible for broadcasting: Settings → Annexes → Application management → "Broadcasting or Google Play Services" → Warehouse → Clear the cache

If the problem occurs after the update MIUI, Try to roll back to the previous version (instructions for experienced users):

⚠️ Note: On the consoles Mi Box S and Mi TV Stick may lose access to some services (e.g. YouTube or Netflix) after resetting to factory settings, due to Google blocking non-certified devices, and you need to re-certify through the Google Play Services app to regain access.

5. Hardware malfunctions: when without repairs can not do

If none of the software methods worked, it could be a physical breakdown.

Typical breakdowns and their symptoms:

• 🔌 Damaged. HDMI-port – the image disappears at the slightest movement of the cable, or the cable is not fixed in the connector.
• 📶 Burnt Wi-Fi module – smartphone or console does not see any Wi-Fi networks, including the TV access point.
• 🔋 Faulty power supply – the Mi Box overheats, spontaneously turns off or does not turn on without a connected cable HDMI (Yeah, it happens!).
• 🖥️ Motherboard problems – TV doesn’t respond to any connection, though indicators are on.

How to diagnose:

1. Try connecting a Xiaomi device to another TV (or vice versa, another source to your TV) and if the problem persists, it’s Xiaomi’s device that’s to blame.
2. Check your power consumption: Connect the console to a known power supply (for example, from a router), if the indicator flashes red, the power supply does not give the desired voltage.

• Contextual contacts in HDMI-port.
• Darkening or bloating on the motherboard (indicate overheating).

⚠️ Warning: If you find physical damage (such as melted items on the Mi Box console board), do not attempt to repair the device yourself. 90% of the time, this leads to short circuit and complete loss of warranty. HDMI-port or replacement of Wi-Fi module will cost 1.5-3 thousand rubles (2026).

6.Sound problems: the image is, but no sound

Situation: you successfully connected the Xiaomi Mi Box to your TV, the image is there, but the sound is not played, or the sound is coming through the speakers of the smartphone, not through TV.

Checklist for diagnosis:

• 🔊 Incorrect sound source – on the TV remote, press the Audio or Source button and select HDMI.
• 🎵 Disabled sound in the settings of the consoles – go to Settings → Sound. → Output sound and select HDMI (not SPDIF or analog).
• 🔌 Problems with HDMI-ARC — If you are connected through the port HDMI-ARC, Try another connector (ARC It is designed for audio systems, not video transmission).
• 📱 Blocking sound on your smartphone – when broadcasting the screen through Miracast, the default sound can remain on the phone. TV" broadcast.

If the sound is interrupted or distorted, check:

• 🔄 Sound format - in the settings of the consoles (Settings) → Display and sound → Select the sound PCM Dolby Digital or Dolby Digital or DTS (Some TVs do not support these formats).
• 🔌 The quality of the cable is cheap. HDMI-cables may not transmit 5.1 or 7.1 sound.

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If the sound is only lost in specific applications (for example, Netflix), the problem is that the sound is not available. DRM-Try updating the app or resetting it.

7. Features of connection through USB-C (DeX, MHL, DisplayPort)

Modern Xiaomi smartphones (for example, Xiaomi) 13T or Redmi K60) Supports the connection to the TV through USB-C But there's some nuances here:

Types of adapters and their limitations:

Step-by-step instructions for USB-C to HDMI:

1. Buy a certified adapter (recommended by Xiaomi) USB-C to HDMI Cheap, uncertified adapters can burn down the port!
2. Connect the adapter to the smartphone, then HDMI-cable.
3. On your smartphone, you'll see a notification that says, "External Display Connected." Click on it and select the mode: Duplicate the screen is the same image on your phone and TV. Expand the screen, and the TV becomes the second monitor.

Settings → Display. → Additionally. → External display mode

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⚠️ Note: When connecting through USB-C The smartphone will discharge 2-3 times faster.We recommend using a powerful power supply (from the 18W) Or connect the phone to charge in parallel with the adapter. On Xiaomi 12 Pro and later at a discharge below 20%, broadcast via the phone. USB-C shutdown.

FAQ: Frequent questions about Xiaomi's TV connection