Why Xiaomi is turning off: all the reasons and solutions for TVs and smartphones

You have included your favorite series on Xiaomi Mi TV, Or you just took a picture on Redmi Note 12, where the device suddenly goes out and doesn't respond to the power button. Is it familiar? The spontaneous shutdown of Xiaomi equipment is one of the most common complaints of users, but the reasons may be very different: From trivial overheating to critical motherboard failures, in this article, we’ll look at all the possible scenarios for why your device shuts down for no apparent reason, and what to do about it, from simple checks to complex repairs.

It's important to understand that if the device is turned off regularly (for example, when charging or playing), it's a systemic problem. If you turn off once, it may be a temporary failure. We've put together a diagnostic checklist to help you identify the root of the evil without going to the service center. And for owners of Xiaomi TVs added a separate section – their problems are often associated with the features of the firmware MIUI TV and hardware constraints.

We warn you right away that some solutions require disassembling the device or working with the firmware, and if you're not sure about your skills, you better go to the experts, but in 70% of cases, you can fix the problem yourself by following our instructions.

1.Overheating: Why Xiaomi turns off when loaded

The most common cause of sudden shutdown is overheating of the processor or battery. - Xiaomi smartphones (especially linear ones) POCO Redmi with Snapdragon chips 7xx/8xx) There are two critical temperature points:

• 🔥 60–65°C – begins trottling (decreased performance), the device can brake.
• 💥 70°C+ — Emergency shutdown to prevent chip damage.

Xiaomi Mi TVs have TV Q1/Q2 overheating is more often associated with power supplies or LED-Illumination:

• 📱 The smartphone is turned off during games (Genshin Impact, Call of Duty Mobile) or video shooting in the video. 4K.
• 📺 The TV goes out after 1-2 hours of operation, especially at high brightness (100% backlight).
• 🔋 The body of the device is hot to the touch (especially in the area of the camera or the bottom of the TV).

How to check the temperature:

1. For smartphones: install the application AIDA64 or CPU Monitor and see the graphs of heating cores.
2. For TVs: Go to Settings → About the device → System status (if available).

Decisions:

• 🧊 Remove the case from the smartphone – it can block the heat sink.
• 🔌 Turn off charging during games (simultaneous load) + charging).
• 📉 Reduce the screen resolution to FHD and limit FPS games up to 60 Hz.
• 🛠️ For TVs: Check the vents on the back – they shouldn’t be clogged with dust.

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If your smartphone overheats even when it's not, try calibrating the battery: discharge to 0%, then charge to 100% without interruption, sometimes helping to reset the incorrect sensor data.

2. Battery problems: bloating, wear, controller failures

The battery is the most vulnerable spot in Xiaomi smartphones, especially after 2-3 years of use.

• 🔋 The device turns off at 20-30% charge, although the indicator shows a normal level.
• 📉 The percentage of charge “jumps” (for example, from 45% immediately to 15%).
• 💥 The phone or tablet will not turn on after full discharge.
• 🔌 Charging is jerking or interrupted.

Xiaomi TVs (models with a battery panel, for example, Mi) TV Stick) problems with the remote battery can simulate the shutdown of the TV itself, but more often the power supply is to blame - its capacitors dry out over time, and the TV turns off when voltage surges.

How to diagnose:

1. For smartphones: check battery status in AccuBattery or through the engineering menu (#4636## → Battery information: If health is below 80%, the battery is worn out.
2. For TVs: inspect the power supply for bloated capacitors (if you have disassembly skills).

Decisions:

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If the smartphone turns off at 20 to 30 percent charge, but it turns on again after you're connected to charging, it's the wear of the battery. It's not a calibration treatment, it's just a replacement.

3. firmware and software failures: why Xiaomi is going into rebut

Software errors are the second most common cause of spontaneous shutdowns, especially in devices on the Internet. MIUI, Where updates sometimes come with bugs:

• 📱 The smartphone turns off when restarting and hangs on the Mi logo.
• 📺 Xiaomi TV cyclically reboots after update.
• 🔄 The device turns off when connected to Wi-Fi or Bluetooth.

Most often it's the fault:

• 🐞 Critical update MIUI (for example, transition MIUI 13 on MIUI 14 on older models).
• 📦 Damaged system files after incorrect update.
• 🔌 Conflict with the custom recaveri (TWRP) ortho-right.

How to check:

1. Try booting into Safe Mode (for smartphones: hold the power button) → long tap on "Switch off» → «Safe Mode. If there are no shutdowns in safe mode, it is the fault of third-party software.
2. For TVs: Reset settings to factory settings (Settings) → System system → Reset).

Decisions:

• 🔄 Firmware rollback to stable version via Fastboot or Recovery.
• 📥 Reinstallation MIUI Fully Wipe (Wipe Data).
• 🚫 Removing problematic applications (often to blame SEOs or launchers).

Check the error log in Settings → The phone. → Error report|

Update all apps on Google Play|

Turn off automatic updates MIUI|

Reset network settings (Settings) → SIM-maps and networks → Resetting network settings)-->

Hardware malfunctions: from motherboard to power button

If the device is turned off without apparent logic (for example, with light pressing on the body or without loading), the problem is most likely hardware.

For smartphones:

• 🔌 Oxidation of battery contacts or charging connector (often after moisture is ingested).
• 📱 Cracking on the motherboard (especially after falls).
• 🔋 Faulty power controller (the device does not turn on without charging connection).

For TVs:

• 📺 Faulty backlight inverter (TV goes out, but the sound remains).
• 🔌 Power supply problems (TV turns off when switching channels).
• 🎛️ Failure of the main board (no reaction to the remote and buttons).

How to diagnose:

• 🔍 Inspect the device for physical damage (blown body, traces of oxidation on the connectors).
• 🔌 Check if the device is turned off when the power cable moves (a sign of poor contact).
• 📱 For smartphones: connect to a PC and check if it is defined in Fastboot (fastboot devices.

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If the Xiaomi TV turns off 5-10 seconds after turning on, try disconnecting it from the network for 1 minute, then holding the power button for 10-15 seconds.

Decisions:

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If a Xiaomi smartphone turns off when you press the screen or body, this is a sure sign of a problem with the motherboard or plumes.

5. Power problems: charging, sockets, power surges

Improper eating is one of the most insidious causes of blackouts, because it's hard to diagnose.

• 🔌 The smartphone is turned off only when charging.
• 📺 The TV goes out when switching the socket or connecting other devices.
• ⚡ The device responds to voltage surges (for example, when the kettle is turned on).

Frequent causes:

• 🔌 Unoriginal power supply (especially for Xiaomi smartphones with Quick Charge).
• 🔋 Damaged cable. USB (squirt).
• ⚡ Unstable voltage on the network (relevant to TVs).
• 🔌 Failure in the socket or extension (check with other devices).

How to check:

1. Connect the device to another outlet (preferably without extension cords).
2. Try a different cable and power supply (like from another Xiaomi smartphone).
3. For TVs: check the voltage in the network with a multimeter (should be 220–230V).

Decisions:

• 🔌 Use only original chargers (especially for models with HyperCharge or Turbo Charging).
• ⚡ Connect the TV through a network filter with protection against voltage surges.
• 🔋 Replace the cable. USB-C — Even microcracks can cause short circuits.

6. Viruses and malware

Rarely, but it happens: some viruses can cause the device to be forced to shut down, especially if they disguise themselves as system processes.

• 📱 The smartphone turns off when you open certain applications (for example, banking).
• 🔍 B Settings → Battery seen unfamiliar processes with high consumption.
• 📲 There are pop-ups with ads even on a locked screen.

Xiaomi TVs have less viruses, but can penetrate through third-party APK (For example, pirated versions of Kodi or IPTV-player).

How to check:

1. Install an antivirus (Malwarebytes or Dr.Web Light) and scan the system.
2. Check the list of installed applications in Settings → Suspicious annexes.
3. For TVs: Reset settings to factory settings (Settings) → System system → Reset).

Decisions:

• 🛡️ Remove all suspicious applications.
• 🔄 Make reset to factory settings.
• 🔒 Disable the installation of applications from unknown sources (Settings) → Confidentiality → Special permits).

Don't install it. APK unverified|

Update regularly MIUI|

Use the official app store|

Disable "Allow installation from unknown sources»-->

7. Features of Xiaomi TVs: Why They Turn Off Themselves

Xiaomi TVs (Mi series) TV A, Q, P) have unique problems that smartphones don't. Common causes of blackouts:

1. Energy saving settings

• 📺 The TV is turned off after 4 hours of inactivity (Sleep Timer function).
• 🔌 Automatic shutdown in the absence of a signal (HDMI-CEC).

2.Firmware failures MIUI TV

• 📥 After the update, the TV is cyclically restarted.
• 🔄 Turns off when switching between HDMI-port.

3.Problems with HDMI-device

• 🎮 The TV goes out when you connect the console (Xbox, PlayStation) or sound panel.
• 🔌 Conflict with HDMI-ARC (audio-back).

Solutions for TVs:

• 🕒 Turn off Sleep Timer in Settings → System system → Sleep timer.
• 📥 Roll back the firmware to the stable version (instruction: see. FAQ).
• 🔌 Check the cables. HDMI — They should support HDMI 2.0/2.1 for 4K.
• 🔊 Turn it off. HDMI-CEC in settings if the TV turns off when working with other devices.

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If the Xiaomi TV is turned off when connected to the HDMI, Try using another port or disable the function. HDMI Control in settings.

8.When to contact the service center

Not all problems can be solved by yourself. Contact the service if:

• 🔥 The device overheats to the point of being unable to hold in your hands (the risk of fire).
• 💥 The battery swelled or deformed the body.
• 📱 The smartphone does not turn on at all (no reaction to charging and buttons).
• 🔧 You suspect problems with the motherboard (cracks, oxidation).
• 📺 The TV turns off with a click (a sign of a power supply failure).

What to do before visiting the service:

1. Make a backup of data (if the device is still turned on).
2. Write down the device model and firmware version (Settings) → The phone).
3. If warranty repair is possible, do not disassemble the device yourself!

Cost of repair (approximately):

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If your device is warranty-free, don’t try to repair it yourself – this will void the warranty.

FAQ: Frequent questions about Xiaomi shutdown