Your Xiaomi Mi TV TV or Redmi Smart TV Is it stuck on the logo, rebooting indefinitely, or not responding at all to the remote? This problem is familiar to many owners of the brand's smart TVs - especially after a failed firmware update, power failure, or application conflict. In 80% of cases, the device can be brought back to life without going to the service center, but it is important to act consistently and avoid typical errors.
In this article, we will examine all possible causes of a cyclical bootloop and not turning on a Xiaomi TV, from basic checks to deep firmware recovery. You'll learn how to tell a software failure from a hardware breakdown, what tools you'll need to repair, and what to do if the screen stays black even after reset. TV 4/4A/4S/4X/5/5X, Redmi Smart TV X and others based on Android TV or PatchWall.
Before you start repairing, answer a key question: after what did the TV stop turning on? This will help narrow down the causes. For example, if the problem occurred after the software update, it is likely the firmware was to blame. If there was a power surge before the failure, check the power supply. And if the TV just died for no apparent reason, it can be both the software and the hardware.
1. Primary diagnosis: exclude obvious causes
Before you take apart a TV or look for firmware, make sure that the problem isn't trivial. According to service centers, 35 percent of complaints about a "disabled" TV are resolved at the basic inspection stage, without repair.
Start with these steps:
- 🔌 Check the power: disconnect the power cable from the socket and the TV for 2-3 minutes (this will reset the residual charge of the capacitors). Connect again, holding the power button on the case (not on the remote!) 10-15 seconds.
- 📺 Test with other cable: use a known working power cable (for example, from a monitor or other TV). Xiaomi models often fail the power connector on the motherboard.
- 🔄 Reset: Remove the batteries from the remote for 1 minute, then insert back in. If the TV responds to buttons on the case but not to the remote, the problem is with the remote, not the TV.
- 🔍 LED indication: look at the power indicator (usually under the logo or sideways). flashes red? burns white? completely gone out? This is the key to the diagnosis.
If you've had the TV turn on at least once after this manipulation, and then it goes back into reboot, it's almost certainly a software problem. If there's no reaction at all (no indication, no clicks of the relay), it's the hardware, the power supply, the motherboard, or the backlight.
⚠️ Note: if the Xiaomi TV makes repeated clicks when you try to turn on, but does not start, this is a sign of a malfunction of the power supply.
2. reset to factory settings (Hard Reset)
If the TV reacts to buttons at all (e.g., the screen lights up for a second or the boot sound is heard), try a hardware reset first, which will delete all user data, but return the system to working condition if the failure is caused:
- 🔄 Application conflict (for example, after installation) APK third-party).
- 📱 Incorrect settings (e.g. changing permissions for system processes).
- 🗃️ Cache overflow or data corruption in the section /data.
Reset methods depend on the model and condition of the TV:
| Status of the television | Resetting method | Instructions |
|---|---|---|
| It's on, but it hangs on the logo. | Reset via Recovery Menu | 1. Turn off the TV with a button on the case.2. Hold the Menu. + Volume Down (on the body) and hold 10 sack.3. In the menu, select Wipe. data/factory reset. |
| Reacts to the remote, but does not load | Reset via service menu | 1.Push Menu on the remote. → Settings → All settings → The device → Reset.2. Enter PIN (default 0000 or 1234). |
| The screen is black, but the indicator is on. | Blind reset (without screen) | 1. Connect the TV to the network.2. Press the Power + Volume Down for 15 seconds.3. Let go and wait 5 minutes. |
If the TV turned on after the reset, but needs to be set up as a new one, then the problem was in the software. Do not restore data from the backup (if you have one), as this can return the conflict settings. Set up the TV from scratch and check the work during the day.
Take a picture of the current settings (networks, sound, picture)
Turn it off. USB-TV-device
Connect the TV directly to the outlet (without extension cords)
Stock up on a remote with working batteries-->
⚠️ Note: on some Xiaomi Mi models TV 4S redmi X50 After the reset, you may need to re-activate your Mi Account. If you do not remember the login details, prepare them in advance or create a new account at account.xiaomi.com.
3. Firmware recovery through USB (if the dumping didn't help)
If the TV goes into an endless restart even after it's reset, it's likely that the firmware is damaged.
- 🔄 Interrupted update (for example, turned off the light during installation of OTA).
- 📥 Incorrectly downloaded firmware file (if updated manually).
- 🛠️ Conflict after rooting or modifying system files.
Recovery will require:
- 🖥️ Computer with Windows/Mac/Linux.
- 📁 Official firmware for your model (you can download on the official website of Xiaomi).
- 💾 Empty flash drive (FAT32, 32GB).
- ⚡ Cable OTG (for some).
Instructions for remediation:
- Download the firmware: Go to Xiaomi Support page. Select your model (e.g. Mi). TV 4X 55) Download the latest stable firmware version (file with.zip extension).
- Prepare the flash drive: format it into FAT32 (not exFAT or NTFS!). Create an update folder (all letters are small!). Place the downloaded.zip file in this folder (do not unpack!).
Launch recovery
- Put the flash drive in the port. USB 2.0 on a TV (usually marked as a Service or OTG).
- Hold the Menu. + Volume Down on the case and connect the power.
- Hold the buttons for 10-15 seconds until the recovery menu appears.
- Select Apply update from USB → specify the firmware file.
It takes 5-15 minutes to update, and don't turn off the power or remove the flash drive, even if the screen is out or the TV is silent, and the TV should automatically restart when the TV is finished.
What to do if the firmware is not installed?
4. Power supply problems: how to check and what to do
If Xiaomi TV is not showing signs of life (no indication, does not respond to buttons), the power supply (PD) may be to blame. TV 4A Redmi Smart TV X, released before 2021.Symptoms of faulty PD:
- 🔌 The TV does not turn on at all (no reaction to the power button).
- 💥 You can hear the relay clicks when you try to turn on.
- 🔥 Smells like a smelted plastic or a smelted fire.
- 🔄 The TV is only turned on after multiple attempts.
To diagnose the power supply:
- Visual inspection: Turn off the TV and remove the back cover (a cross screwdriver will be required). Check the power supply for bloated capacitors, burnt tracks or melted elements. Check the fuse (usually marked as F1 or FUSE) — If it burns out, it needs to be replaced.
Multimeter check
- Set the multimeter in constant voltage measurement mode (DC 20V).
- Connect the TV to the network and measure the voltage at the output of the PD (usually a connector with 4-6 contacts, marked as a PD). PWR OUT).
- Normal values: +12V, +5V, +3.3V (allowable ±5%).
If the power supply is faulty, you have two options:
- 🔧 Repair: Replace capacitors, diodes or transistors (requires a soldering iron and skills) Parts cost 200-500 ₽.
- 🔄 Replacement: Purchase of a new PD (1,500 to 4,000) ₽ The block number is usually indicated on the sticker (e.g, DPS-180AB-1 A).
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If you're not sure about your brazing skills, don't risk repairing the power supply yourself. Mistakes can damage the motherboard or even fire. In service centers, it costs 300 to 500 times a PD diagnosis. ₽, and repairs from 1,000 ₽.
5. Problems with motherboard and screen illumination
If the power supply is working, but the TV still does not turn on, the problem may lie in:
- 🧠 Motherboard (damage to the south bridge, memory chips or processor).
- 💡 Screen illumination (failed) LED-light-driver).
- 🔌 Shoeing (oxidation of contacts or break of connection between boards).
How to diagnose:
- 🔦 Backlight: Light up the flashlight at an angle on the screen. If you see a dim image (menu, logo), then the backlight is not working, but the motherboard and matrix are working. Check the voltage on the backlight connector (usually marked as BL_ON or LED_PWR). It has to be. +24V–+60V model-wise.
- 🖥️ Motherboard: Check for chips, burnt elements or traces of liquid. Check if the capacitors near the processor are inflated (usually marked as Amlogic or MStar). If you have access to the oscilloscope, check for signals on the processor. HDMI, eMMC and DDR.
Home-based motherboard or lighting repairs are possible, but require specialized equipment, such as replacements. LED-tape:
- 🔧 Set of screwdrivers (including TORX T5 frame-break).
- 🔥 Dryer for softening double-sided scotch (temperature 60–80)°C).
- 💡 New LED-ribbons (cost from 800) ₽ metre).
- 🧲 Antistatic bracelet (so as not to damage the matrix with static electricity).
⚠️ Warning: When changing the lights, never turn on the TV with the lights disconnected. LED-This can cause the backlight driver on the motherboard to fail. Always check polarity when you connect.
6. When to contact the service center
Not all breakdowns can be repaired by yourself. Contact the service center if:
- 💥 Xiaomi TV won’t turn on after falling or mechanical damage.
- 🔥 On boards you can see traces of burns, melted elements or burned tracks.
- 💾 Reset and flashing did not help, and artifacts appear on the screen (strips, broken pixels).
- 🔧 You have no experience in soldering or electronics diagnostics.
- 📄 TV for warranty (self-repair cancels warranty).
Cost of repairs in service centers:
| Type of breakdown | Cost (₽) | Duration of repairs |
|---|---|---|
| Replacement of the power supply | 1 500–3 500 | 1-2 days |
| Mainboard repair (replacement of capacitors, chips) | 2 000–6 000 | 3-5 days |
| Replacement of illumination (LED-ribbon + driver) | 3 000–8 000 | 2-4 days |
| Recovery of the firmware (if it does not help) USB-method) | 1 000–2 500 | 1 day |
| Replacement of the matrix (for physical damage) | 10 000–25 000 | 5-7 days |
Before contacting the service:
- Take a picture of the TV serial number (on the back sticker).
- Write down the symptoms of a breakdown (what exactly isn’t working, after which the problem appears).
- Check if the warranty is maintained (check the check or Mi Account).
- Compare prices in 2-3 service centers (the range can be significant).
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If the TV is warranty, don't open it yourself! Xiaomi can refuse free repairs if it finds signs of interference. The warranty period for most models is 12 months, for the matrix - up to 36 months.
7 Prevention: How to avoid problems in the future
To make your Xiaomi TV last longer without crashes, follow these guidelines:
- ⚡ Stable power: Use a network filter or UPS (uninterruptible power source) to protect against power surges. Do not connect the TV through an extension cord - only directly into the socket.
- 🔄 Updates: Install updates only through the official menu (Settings) → On TV. → Update system. Do not interrupt the update process (even if it takes more than an hour). USB-device.
- 🛠️ Operation: Do not overheat the TV - provide ventilation gaps (minimum 10 cm from the walls); Avoid humidity (optimal humidity - 40-60%). Do not press the screen - this can damage the matrix or backlight.
- 📁 Annexes: Do not install APK from unverified sources (virus and conflict risk) Clean the cache regularly (Settings) → Annexes → Clear cache. Do not use the TV as your primary mining or rendering device.
If you often encounter hangings, install the application TV Optimizer (available on Google Play for Android) TV). It'll help:
- 📊 Monitor loading CPU memory.
- 🧹 Automatically clean the cache.
- 🔋 Optimize energy consumption.