Xiaomi TV turns on and off: 12 reasons and what to do

You have witnessed the strange behavior of your TV Xiaomi Mi TV or Redmi Smart TV: Does it spontaneously turn on at night, turn off while watching, or reboot cyclically without you? TV 4A before the flagship Mi TV Q2, And it can be caused by software failures or hardware failures, and 80 percent of the time, you can fix it yourself without going to a service center.

In this article, we will analyze all possible causes of spontaneous switching on / off of Xiaomi TVs, starting from banal (for example, from the Internet, HDMI-CEC You'll get step-by-step instructions for each cause, and checklists for diagnosis. We'll focus on Android models. TV Google TV, where the problem is often related to background processes.

If your TV turns on at exactly 3:00 a.m. every day, it is clearly due to automatic updating, if it turns off 5-10 minutes after start, it is due to overheating or capacitor malfunction, and then you will learn to distinguish these cases and eliminate them without risking damage to the equipment.

1. Checking basic settings: timers, HDMI-CEC energy-saving

Start with the simplest: maybe the TV is acting like this because of activated features you forgot about or didn't know about, and 35% of the time, the problem is solved by turning off just one setting in the menu.

The first thing you need to do is check the on/off timers. Many users accidentally activate them through the remote or voice assistant Google Assistant. → Smart home. → Timers (or Settings) → System system → Sleep timer for older models).

Remove all planned tasks, if any.

• 🔌 HDMI-CEC (Anynet+): This feature allows you to control the TV through connected devices (such as a set-top box or soundbar). If it is on, the TV can respond to signals from other gadgets. → Connections → HDMI-CEC.
• ⚡ Energy Conservation: In Mi Models TV P1 And now there's Eco mode, which turns off the TV when you're inactive for a long time. → Power supply → Energy saving regime.
• 🛠️ Auto Update: If the TV turns on at night, it is the fault of automatic software update. → On TV. → Updating the system → Auto-update.

It’s also worth checking the remote: sometimes buttons stick or react to extraneous IR signals (such as from lamps or other remotes). Try removing the batteries from the remote for 10 minutes or using the TV without it, controlling through the Mi Remote app.

2. Software failures: firmware, cache and background processes

If the basic settings didn't help, the problem most likely lies in the software. - Xiaomi TVs on Android TV Google TV subject to two types of failure:

1. System processes freeze (e.g. com.android.systemui) causing the TV to reboot.
2. Damage to the cache of an application or system leading to cyclical shutdowns.

The first thing you need to do is clear the cache.

1. Go to Settings → Applications → All applications.
2. Select Google Play Services, Android System WebView and Launcher (Xiaomi shell).
3. In each of them, click Clear the cache and Stop.

If it doesn’t help, try resetting to factory settings (without deleting data): Settings → On TV. → Resetting settings → Reset settings. Important: Before reset, write down your Xiaomi and Google account details so you can log in again.

If the TV only turns off when a particular app (such as Netflix or YouTube) is running, the problem is with the app itself. Remove it and install it again.

1. Go to Settings → Applications → All applications.
2. Select the problem app and click Remove.
3. Reinstall it through the Google Play Store.

⚠️ Attention: If the TV turns off after 5-10 minutes after resetting, it may indicate that the processor is overheated or the power supply is malfunctioning.

3. Power problems: power supply, cables and sockets

Unintentional shutdowns are often associated with unstable power supply. Xiaomi TVs are sensitive to power surges, especially models with a high-powered power supply. 4K-permission (e.g., Mi) TV Q1 or Redmi MAX 98”), which consume more energy.

Start with a check:

• 🔌 Sockets: Connect the TV to another socket (preferably with grounding). If the problem disappears, it is the wiring or network filter.
• ⚡ Power cables: Check the cord for damage. If it's rubbed or melted, replace it. TV 5 Pro and newer use only original Xiaomi cables.
• 🔋 Uninterruptible Power Supply (UPS): If the TV is connected via a UPS, try connecting directly. Some UPSs do not communicate correctly with Xiaomi power supplies.

If the TV turns on but immediately turns off (or flashes the power indicator), it is a sign of a malfunction of the power supply. TV 4A mi TV 4S It's a common problem because of cheap capacitors:

1. Turn off the TV.
2. Remove the back cover (if you have experience disassembling equipment).
3. Check the capacitors on the power supply board: if they are bloated or leaking, a replacement is required.

If you are not sure of your abilities, it is better to contact the service center. Self-repair of the power supply without experience can lead to a short circuit!

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If the TV turns off when you connect to a particular outlet, but it works fine in another, it's a wiring problem. Use a power surge-proof network filter.

4.Overheating: cleaning, thermal paste and ventilation

Xiaomi TVs, especially models with Full Array Local Dimming (e.g. Mi) TV Q2), If the cooling system is clogged with dust or the heat paste is dry, the TV will automatically turn off to protect against overheating.

How to check for overheating:

1. Turn on the TV and let it work for 15-20 minutes.
2. Carefully touch the back panel in the CPU area (usually left or center), if it is hot, it is overheating.
3. Listen: if the fan (if any) works at maximum speeds - cleaning is required.

For cleaning:

1. Turn off the TV and let it cool.
2. Remove the back cover (in most models it is attached to the latches).
3. Vacuum cleaner or brush remove dust from the radiator and fan.
4. If the thermopaste dried (grey and hard), replace it with a new one (for example, Arctic). MX-4).

In models without active cooling (e.g., Mi) TV 4A) overheating is often caused by improper placement:

• 📏 Distance to wall at least 10 cm.
• 🌡️ The TV is not under direct sunlight.
• 🚫 There are no heat sources (batteries, heaters) around).

5. Hardware malfunctions: motherboard, power button, inverter

If all previous methods have failed, the problem is likely hardware.

• 🔧 Power button: If it's stuck or oxidized, the TV can turn on/off. Check it by manually pressing it, if it "fails" or if it doesn't click clearly, you need to replace it.
• 🖥️ Motherboard: Damage to the south bridge or memory chips leads to cyclical reboots.
• 💡 Inverter of lighting: In models with LED-In the lighting (all modern Xiaomi) a faulty inverter can cause spontaneous shutdowns, and the screen can flash before turning off.
• 🔌 Port port HDMI: If the TV is turned off when connected to a certain HDMI-port, fault of the damaged connector.

To diagnose the power button:

1. Turn off the TV.
2. Remove the back cover and find the power button (usually on the motherboard or a separate module).
3. Examine it for oxidation or mechanical damage.
4. If the button is "stuck", gently clean it with alcohol or replace it.

If the TV is turned on but no image (or the image appears and disappears), the problem may be in the matrix plume or the image is not visible. T-CON In this case, professional repairs are required.

⚠️ Warning: If you notice a burning smell or melted items on the board - immediately disconnect the TV from the network and do not turn it on until repair.

External devices: consoles, soundbars and USB-device

Sometimes the Xiaomi TV itself turns on or off because of the connected devices.

• 🎮 Game consoles (PS5, Xbox can send signals over HDMI-CEC, turn on.
• 🔊 Soundbars or receivers with function ARC (Audio Return Channel sometimes clashes with TV.
• 💽 USB-Flash drives or hard drives with a corrupted file system can cause failures.
• 📡 TV-tuners CI-Modules (e.g. cable TV) sometimes give false signals.

How to check:

1. Turn off all external devices from the TV (HDMI, USB, optic cable).
2. Use the TV in this state for 1-2 days, and if the problem disappears, one of the devices is to blame.
3. Connect the devices one at a time to identify the "culprit."

If the problem is HDMI-device, try it:

• Use the other HDMI-cable (preferably high speed) HDMI 2.1. 4K-model).
• Connect the device to another HDMI-port-television.
• Shut down. HDMI-CEC in the settings of the TV and external device.

For USB-device:

• Format flash drives into FAT32 exFAT (NTFS not always maintained).
• Do not use externally powered devices (for example, hard drives without a separate power supply).

7. Update firmware and reset to factory settings

If the Xiaomi TV itself turns on and off after updating the firmware, this may be due to a bug in the software.

• 🔄 Recoil on the previous firmware version (if backup is available).
• 📥 Hand-flashing through USB.
• 🧹 Complete reset (with deletion of all data).

For manual flashing:

1. Download the latest stable firmware for your model from the official Xiaomi website.
2. Unpack the archive and copy the file update.zip on the flash drive (formatted in FAT32).
3. Insert the flash drive into the TV and go to Settings → On TV. → Updating the system → Update through USB.
4. Follow the instructions on the screen. Don't turn off the TV during the process.

For a complete reset of settings:

1. Go to Settings. → On TV. → Resetting settings → Reset all settings.
2. Confirm the action (it may be necessary to enter) PIN-code).
3. After resetting, the TV will restart and offer to undergo the initial setup.

⚠️ Note: If the TV does not turn on at all or freezes on the logo after reset, this may indicate damage to the eMMC partition. In this case, you need to flash through Fastboot or replace the memory in the service center.

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If the TV starts to turn on/off spontaneously after the update, try resetting to factory settings first, which solves the problem in 60% of cases without manual flashing.

8.When to contact the service center?

If you’ve tried all the techniques in this article, but the Xiaomi TV still turns on and off, it’s time to turn to the professionals.

• 🔥 The TV smells like a burn or the board shows melted elements.
• ⚡ When turned on, a click is heard, but the screen does not light up (a problem with the power supply).
• 🔄 The TV is rebooted every 1-2 minutes (damage to the firmware or memory).
• 📺 There are artifacts on the screen (strips, flickering, broken pixels) along with spontaneous shutdowns.
• 🔌 The TV does not respond to the remote and power button.

The cost of repairs in official service centers Xiaomi:

Before the service visit:

1. Take a picture or record the serial number of the TV (located on the sticker at the back).
2. Keep a check or a warranty card (if the TV is guaranteed).
3. Describe the problem in as much detail as possible (when it began, under what conditions it manifests itself).

If the TV is guaranteed, don't disassemble it yourself - this will void the warranty.

FAQ: Frequent questions about Xiaomi’s spontaneous on/off TV