Why Xiaomi TV is turned on: reasons and solutions

You wake up at night from a flickering screen or come back from work with a Xiaomi Mi TV TV 4A/4S/5 The Pro is already working -- remember exactly what you turned it off -- and it's a common problem that owners of the brand's smart TVs face, and in most cases it's not a breakdown, but it's caused by system settings, firmware errors, or external devices.

In this article, we will analyze all possible causes of spontaneous switching on – from banal remote failure to hidden functions. HDMI-CEC And we'll give you a little bit of step-by-step instructions on how to turn off auto-on on different models. MIUI TV, which are not documented in official manuals.

1. The failure of the remote control or accidental pressing of buttons

The first thing to check is whether the TV is a false alarm, because Xiaomi's infrared (IR) remotes are sensitive to bright light, temperature changes, and even mechanical vibrations, and if the remote is lying on a table next to a window or in direct sunlight, it can send random signals.

How to check it out:

• 🔍 Keep the remote control away from the TV (for example, in the drawer) and watch the behavior of the TV 1-2 days.
• 📱 Try to control your TV through the Mi Remote app on your smartphone by turning off the physical remote.
• 🔋 Remove the batteries from the remote for the night – if the TV does not turn on, the problem is in it.

If the reason is in the remote, the solutions can be different:

• 🛠️ Disassemble the remote and clean the contacts of the buttons with alcohol (often oxidation is caused by humidity).
• 🔄 Replace batteries – discharged cells can cause parasitic signals.
• 🆕 Buy a new remote (original art. MDZ-22-AB or compatible universal).

⚠️ Note: Some users have reported that cheap Chinese remotes with AliExpress can conflict with the Xiaomi protocol and send false commands.

Function HDMI-CEC and connected devices

Technology HDMI-CEC (Consumer Electronics Control allows devices connected to the HDMI, So, for example, if you turn on an Xbox or a PlayStation, the TV can automatically turn on. TV, NVIDIA Shield or even some sound panels.

In Xiaomi TVs, this feature is called MI TV CEC And it's on by default:

1. Go to Settings → Devices and accessories → HDMI-CEC.
2. Turn off the slider Turn on HDMI-CEC.
3. Additionally, disable Auto-Enable option when you detect the device (if any).

If the TV still turns on after that, check the settings of the connected devices:

• 🎮 On PlayStation 5: Settings → System system → HDMI → Enable communication with the device (HDMI) → Shut down.
• 📺 On Apple. TV: Settings → Remote and devices → Television and receiver management → Shut down.
• 🖥️ On a PC with a graphics card. NVIDIA: control panel NVIDIA Control Panel, turn it off. HDMI-CEC.

3. Firmware problems and system failures

One of the most insidious reasons is a firmware bug: Xiaomi TVs get updates regularly, but sometimes they contain bugs that make the TV wake up on its own. TV 4A (2018–2019) mi TV 5 Pro based on Android TV 9/10.

How to check:

• 📱 Go to Settings. → On TV. → Update the system and check the current firmware version.
• 🔍 Compare it to the latest stable versions on Xiaomi’s official website.
• 📊 Check out the reviews on the forums (for example, 4PDA XDA-Developers – if other users complain about the same problem, the software is to blame.

Decisions:

• 🔄 Reverse to the previous firmware version (if the problem occurred after the update). To do this, download the old firmware from the Xiaomi archive and install it through Settings. → Update → Local Update.
• 🆕 Manual installation of the latest beta (if corrected build is available).
• ⚙️ Reset to factory settings (if the failure is caused by a settings conflict).

⚠️ Note: If you roll back the firmware, there is a risk of losing application data (for example, saving in games or logins in services). → Account and security → Backup.

Delete your Xiaomi account (Settings) → Account)

Save the list of installed applications (screen photo)

Write down your network settings (Wi-Fi password, IP)

Turn it off. USB-device

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If the TV is on strictly on schedule (for example, every day at 3:00), this may be due to background tasks of the system.

1. Go to Settings. → Annexes → Autostart and disable autostart for unnecessary apps.
2. B Settings → Disable notifications from system services.
3. B Settings → Power saving disable the option Automatic update in the background.

4. Wake-on-LAN and network commands

Wake-on-LAN (WoL) allows you to turn on your TV over a local network, which is used for remote control (for example, through the Mi Home app or Google Home), but sometimes the TV wakes up because of random packets on the network, for example, from a router or other device.

How to turn off WoL:

1. Go to Settings. → Network and Internet → Additionally. → Wake-on-LAN.
2. Turn off the slider Allow Network Connection.
3. If the option is not on the menu, use the hidden command via the ADB: adb shell settings put global wake_on_lan_enabled 0

Additional measures:

• 🔌 Turn off the TV at night (physically pull out the Ethernet cable or turn off Wi-Fi in settings).
• 📡 Check your router settings – some models (e.g. Xiaomi Mi Router) send ARP-Requests that may wake up devices.
• 🛡️ Set up static. IP for the TV and add it to the DMZ router (if you use WoL intentionally).

External power supplies and voltage surges

Xiaomi TVs are sensitive to power quality, and if you have power surges on the network or if the TV is connected through a cheap network filter, it can cause a false alarm of the power supply. ATX-block (e.g., Mi) TV 4S 55").

Signs of a problem:

• 🔌 The TV is turned on after turning off / turn on the lights in the apartment.
• ⚡ The screen flickers or artifacts appear before spontaneously turning on.
• 🔋 In the event log of the router (if the TV is connected by cable) reconnections are recorded.

Decisions:

• 🔌 Connect the TV directly to the outlet (without extension cords and filters).
• ⚡ Use a voltage stabilizer (for example, APC Back-UPS or Ippon).
• 🔧 Check the grounding of the socket - poor contact can cause interference.
• 🔋 If the TV is connected via a Powerline adapter (wiring Internet transmission), turn it off – such devices often cause interference.

⚠️ Note: If the TV turns on immediately after a thunderstorm or power outage, this may indicate damage to the power supply!

6.Voice assistants and a smart home

If your TV is integrated into your smart home system (e.g., via Mi Home, Google Assistant, or Alice), it may turn on on a voice command or on a schedule, often because of:

• 🎤 Falsely triggered voice assistant (e.g., the phrase "turn on cartoons" can be heard as "turn on the TV").
• ⏰ Time-automated (e.g., Good Morning script includes TV at 7:00 a.m).
• 🔄 Conflict between multiple smart home systems (e.g. if the TV is added to both Mi Home and Google Home).

How to check and disable:

1. In the Mi Home app: Go to Profile → Smart home. → Automation. Delete all scripts associated with the TV. Turn off the voice control option for the device.

Google Assistant

Okay Google → Settings → Device Management → [Your TV] → Settings ⚙️ → Turn off "On command"

Alice.

Alice → Devices → [Your TV] → Settings → Remove from the “Favorites”

If you don’t use voice control but the TV is still on, check:

• 📱 Geolocation triggers (e.g. turning on TV when you return home).
• 🌡️ Smart home sensors (for example, turning on TV when the motion sensor is triggered).
• 🔄 Smart home firmware updates (sometimes after the Mi Home update, the settings are reset).

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If you use Google Assistant, add your TV to a separate room (such as “Bedroom”) and set time limits in Settings. → Family → Device management.

Hardware malfunctions

If all software methods have been tried, but the Xiaomi TV still turns on itself, the problem may lie in the hardware.

• 🔌 Power button – if it is stuck or oxidized contacts, the TV can turn on without a command.
• 🔋 Power supply – faulty capacitors or chips can cause false positives.
• 📶 Wi-Fi/Bluetooth-module – if it is damaged, the TV can react to interference as an on command.
• 🖥️ Motherboard – failures in the power controller (for example, the chip) RTD2999 old-model).

How to diagnose:

• 🔍 External inspection: Check the power button for mechanical damage. Try pressing it carefully several times - if the TV turns on / off spontaneously, the button malfunctions.
• 🔧 Test without connections: Turn off all cables (HDMI, Ethernet, antenna, and leave the TV on the network overnight, if it doesn't turn on, the problem is with external devices.
• 📊 Error Logs: On some models (Mi) TV 5 Pro and later) you can view the event log through Settings → System system → Logs. Look for PowerOn or WakeUp records.

Decisions:

• 🛠️ Replace the power button – if it sticks, it can be replaced yourself (cost of part) ~300-500 rubles.).
• 🔋 Repair of the power supply - if the capacitors are to blame, they can be soldered (refer to the service).
• 🔄 Flashing through TestPoint – if the firmware fails at the bootloader level (a soldering iron and experience is required).
• 🆕 Replacement of the motherboard is an extreme measure if the power controller is damaged (cost) ~50-70% of the price of the TV).

⚠️ Note: If the TV turns on with a characteristic click of the relay and does not respond to the remote, do not try to repair it yourself - this is a sign of a short circuit in the power supply, which can lead to a fire.

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If the TV is guaranteed, do not open it yourself! Contact the authorized service center Xiaomi - repair warranty free, and when you open the case, the warranty is removed.

FAQ: Frequent questions