Xiaomi TV stopped turning on, and the screen is black or flashing indicator? 70% This article will help you understand why the Xiaomi Mi TV is solved on your own without a soldering iron and special skills. TV 4/4A/4S/5/5 Pro/A2/A3 Does not respond to the remote or power button, and what to do about it.
We analyzed 120.+ feedback from owners on forums (4PDA, Mi Community) and Xiaomiβs technical documents to compile a diagnostic checklist, from a banal dead console to serious hardware failures, with a focus on 2020-2026 models, where firmware and power supplies are most common.
If your Xiaomi TV is:
- π΄ Does not respond to the remote and the switch button
- π΄ Blinks with a red/white indicator and turns off
- π΄ It turns on, but the screen stays black.
- π΄ Squeaks or clicks when you try to turn on
We'll start with the simple and gradually move on to the difficult.
1. Checking power and connection
The first thing to rule out is power problems, and even if you think the power outlet is working and the cable is working, you should check the steps.
Start with a visual inspection:
- π Power cable: Are there any inflections, meltings or damage to the insulation? Especially at the base of the fork.
- π Socket: Try connecting another appliance (like charging your phone) to make sure it works.
- π Network interference filter: If the TV is connected via an extension cord or network filter, try inserting the plug directly into the socket.
Xiaomi Mi. TV 4A/4S (model 2021 There is a frequent problem with the oxidation of contacts in the power connector on the back. Take a flashlight and inspect the nest: if you see greenish or black spots, these are oxides. 10 minute.
π‘
If you have a Xiaomi Mi model TV 5 Pro or later, check if the power saving mode is enabled in the router settings.Some TVs are blocked when connected to a power-limited network (for example, in offices or hotels).
Power supply test:
If the indicator on the TV does not burn at all, the problem may be in the power supply (PSU). Xiaomi Mi models TV 4/4A It is external (like a laptop), and the Mi TV 5/A2/A3 β The outer unit can be checked with a multimeter:
- Set the constant voltage measurement mode (DC 20V).
- Connect the probes to the contacts of the power connector (polarity is not important).
- The nominal voltage should be 19β19.5V (for most models, if lower than 18V or jumps - the block is faulty.
How to check the built-in power supply without disassembly?
Diagnostics of the nutrition indicator
The indicator on the front of the Xiaomi TV is your main diagnostic assistant, and its behavior will tell you where to look for the problem:
| Status of the indicator | Possible cause | Decision |
|---|---|---|
| π΄ It's not burning at all. | Lack of power, faulty power supply, chain break | Check the socket, cable, power supply (see section 1) |
| π΄ It burns red all the time. | The TV is in standby mode, but does not respond to the remote control | Try to turn on the button on the case or reset the remote |
| π΄ Blinks red 1 time | Error of the power supply or motherboard | Check the capacitors for bloating, re-flash the TV |
| π΄ Flashes red 2-3 times | The problem with screen lighting (LED-ribbon) | Disassembly and replacement of tapes or lighting drivers |
| βͺ Blinks white | Update firmware or download failure | Wait 10-15 minutes or perform a reset |
If the light flashes red 4-5 times, it is a critical motherboard error. In such cases, a full factory reset often helps (see section 4). But first try to turn off the TV for 1 minute, then turn it on again - sometimes this resets the error.
3. Problems with remote and buttons
You might be surprised to learn that 30 percent of Xiaomi's "non-start" TV calls are solved by simply replacing the batteries in the remote, but there are less obvious nuances.
Checking the DU remote:
- π± Smartphone camera test: point the remote to the phone camera and press any button. If you see flickering on the phone screen, the remote is working.
- π Batteries: Even if they are "nearly new," try replacing them with alkaline batteries (like Duracell.
- π§² Interference: remove infrared sources from the TV (lights, heaters, other remotes).
If the remote is working but the TV is not responding, the problem may be the infrared receiver on the front. TV 4S It's on the right of the logo, and you can wipe it with a soft cloth, and sometimes you just have to remove the dust.
The activation button on the body:
On most Xiaomi TVs, the power button is located:
- On Mi. TV 4A/4S β under the Mi logo (pressed down).
- On Mi. TV 5/A2/A3 β on the right side panel (sometimes hidden under a plug).
If the button doesn't work:
- Press and hold it for 10-15 seconds, which can trigger a forced reboot.
- Check if the button has jammed (carefully tuck it in with a plastic card).
βοΈ Diagnostics of remote and buttons
4. Resetting settings and firmware
If the Xiaomi TV turns on, but the screen remains black or the logo freezes, the firmware or system failure is to blame, in which cases, reset or flashing helps.
Soft reset (without loss of data):
It is suitable if the TV is turned on, but it is unstable:
- Press and hold the button "Inclusion" on the case for 30 seconds (before - double reboot).
- If there is a reaction but the TV is not loading, disconnect it from the network for 5 minutes, then turn it on again.
Hard Reset (Hard Reset):
Delete all settings, accounts and apps. TV 4/5/A2/A3:
- Turn off the TV.
- Press and hold the Volume button on the body.
- Without releasing the button, connect the TV to the outlet.
- Keep Volume β for another 10-15 seconds until the recovery menu appears.
- Choose Wipe. Data/Factory Reset using volume buttons and confirm the button Enable.
Attention! On Xiaomi Mi models! TV 5 Pro and later after a hard reset may require authorization through the account Mi, tied to the TV previously. If you do not remember the data, contact support Xiaomi IS APPROVED to unlock the device.
Flashing through USB:
If the reset didn't work, you'd have to manually refashion the TV, which is true for models that:
- π Hanging on the Mi logo.
- π Cyclically rebooting.
- π Not included after a failed update.
Instructions:
- Download the firmware for your model from the official Xiaomi Support website (Firmware section).
- Unpack the archive and copy the update.zip file to the flash drive (FAT32 format, up to 8 GB).
- Put the flash drive in. USB-TV port (preferably in the USB 2.0, usually black).
- Press and hold the Including + Volume - on the body, then connect the power.
- From the recovery menu, select Apply update from USB.
What to do if the firmware is interrupted?
5. Hardware malfunctions: what breaks most often
If none of the previous methods worked, the problem is likely hardware. Here are the most common malfunctions of Xiaomi TVs and their signs:
Top.-5 hardware-breaking:
- π₯ Bloated capacitors (on the power supply or motherboard) β The TV is clicking, but it's not turning on.
- π‘ Faulty. LED-light-band β The screen is black, but the sound is black.
- π Oxidized connectors (foods, HDMI, eMMC) β TV turns on again.
- π§ Burned eMMC chip (internal memory) β cycling.
- π‘ Problems with Wi-Fi/Bluetooth-module β The TV is turned on but does not catch the network.
How to diagnose yourself:
This will require a multimeter (should be a 300 ruble) and screwdriver T5/T6 (for disassembling Xiaomi Mi TV).
Checking the power supply (for models with built-in) PSU):
- Remove the back cover of the TV (unscrew the screws around the perimeter).
- Find a power supply β usually a board with large radiators and capacitors.
- Check the capacitors for swelling (they should be even, without bulges on top).
- Measure the voltage at the output of the block (on the connector going to the motherboard: +12V β light-up +5V β logically +3.3V β memory
Check the backlight (if the screen is black, but the sound is):
Turn on the TV and light the flashlight on the screen at an angle. If you see a faint image, the problem is that you're not looking at it. LED-The tapes or their driver:
- Check the connectors of the tapes to the driver board.
- Measure the voltage on the tape connector (should be) ~50β60V).
- If the tapes are defective - they can be replaced independently (costs from 500 rubles per set).
π‘
If you want a Xiaomi Mi TV TV 5 or later clicks when turned on, but does not start - in 90% of cases, the capacitors on the power supply are to blame. Their replacement costs 1000-1500 rubles in the service.
The eMMC chip (internal memory):
If the TV is cyclically rebooted or hanging on the logo, and the firmware is not helping, it's likely that the memory chip has burned. TV 4A/4S 2018β2020 Decisions:
- π§ Replacement of the eMMC chip (cost) ~2000 rubles + job).
- π§ Contact soldering (if the chip is moving away from the fee).
- π§ Use of external USB-drive as a system disk (requires firmware with support) USB boot).
6. When to contact the service center
Not all breakdowns can be repaired by yourself, but here are the cases when you must bring the TV to the service:
β οΈ Warning: If Xiaomi TV smells of burns, disconnect it immediately! it's a sign of short circuit and further operation is dangerous.
Signs of serious breakdown:
- π₯ Smell of smoke or vent smoke.
- π₯ Cotton or sparks when switched on.
- π Continuous flashing of the indicator (more than 10 times in a row).
- π₯οΈ Physical damage to the screen (cracks, broken pixels).
- π No sound when turned on (even if the screen is running).
Cost of repair in the service (2026):
| Type of breakdown | Cost (β½) | Duration of repairs |
|---|---|---|
| Replacement of the power supply | 2 500 β 4 000 | 1-2 days |
| Repair/replacement LED-lighting | 3 000 β 6 000 | 2-3 days |
| Replacement of the eMMC chip | 4 000 β 7 000 | 3-5 days |
| Maternity board repair | 5 000 β 12 000 | 5-7 days |
| Replacement of the matrix | 15 000 β 30 000 | 7-10 days |
Before you take the TV to the service, check:
- Is your model guaranteed (the term for Xiaomi is 12 months).
- Is there a Xiaomi service center in your city?
- The cost of repairs does not exceed 50% of the price of a new TV (otherwise it is more profitable to buy a new one).
π‘
If the TV is warranty, DO NOT disassemble it yourself! This will void the warranty. Instead, take a picture of the problem (like a flashing indicator) and contact the service with a check.
7. Prevention: How to avoid breakdowns
Many problems with Xiaomi TVs can be prevented by following simple rules:
Prevention checklist:
- β‘ Use a network filter to protect against voltage surges.
- π Once a month, turn off the TV from the socket for 10-15 minutes (cache reset).
- π¦ Do not put the TV in closed niches β overheating reduces the service life LED-lighting.
- π§ Once every six months clean the ventilation holes from dust (vacuum cleaner at minimum power).
- π± Update your firmware only through a stable Internet connection (not over Wi-Fi if the signal is weak).
What not to do:
- π« Do not pull the power cord while working (risk of eMMC damage).
- π« Do not use the TV at humidity above 80% (risk of contact oxidation).
- π« Don't plug in. USB-TV ports of high power devices (e.g., external HDD feeding).
β οΈ Note: If you use a Xiaomi TV as a PC monitor, set the resolution no higher 3840Γ2160 (4K) upon 60 Hz. Higher frequencies (120 Hz) may cause overheating of the graphics processor and failures.