Xiaomi TV glitches: what to do if it slows down, turns off or does not turn on

Xiaomi TVs (Mi series) TV 4/4A/4S/5/5X/Q1/Q2 And others are known for their combination of price and functionality, but even they're not immune to failure. If your Xiaomi TV is getting glitzy, it's slowing down the interface, it's turning off spontaneously, it's not responding to the remote or it's stuck on the logo, don't rush it to the service. 80% In some cases, the problem can be solved independently. 10-30 minute.

In this article, we will discuss the top-10 causes of malfunctions and give step-by-step instructions taking into account the features of the firmware MIUI TV Google TV (You'll learn how to diagnose a problem, what settings to check first, and when to actually go to the wizard. Particular attention will be paid to the hidden functions of the engineering menu, which help restore performance even after the "brick" after an unsuccessful update.

1. Diagnosis: how to determine the cause of glitches

Before you start repairing, it is important to understand what is wrong with the TV.

• 🔄 Cyclical reboot – TV turns on, shows Xiaomi logo and switches off again.
• 🐢 Interface brakes – lags when navigating the menu, long loading of applications.
• 📵 Responds to the remote – buttons don’t work, although the batteries are good.
• 🔊 Sound/image problems – no picture, sound interrupted, artifacts on screen.
• 🔌 Unintentional shutdown – the TV is turned off through 5-30 minute.

Each symptom indicates its own group of causes:

If the TV is turned on but is glitchy, start by checking your settings → On TV. → Software version: Outdated firmware is one of the most common causes of failure. TV (for example, Xiaomi TV Q2 2023) current version at the time of writing — ATV 12.0.1 or later.

2. Software failures: update, reset and cleanup

Most of the glitches are software related. Start with the safest methods:

Update of firmware

Outdated firmware can cause lags, application errors and unstable work.

1. Go to Settings → About TV → System Update.
2. Click Check for updates.
3. If a new version is available, download it and install it. Don't turn off the TV during the process!

For Google models TV (for example, Xiaomi TV A2 43) Updates come through Settings → System system → Software Update: If the TV doesn’t find updates via Wi-Fi, try connecting via Ethernet cable – sometimes Xiaomi servers restrict the distribution of updates over the wireless network.

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If the TV does not turn on, but reacts to the power button (indicators are on), try updating the firmware through the USB. Download the current version for your model from the official Xiaomi website and follow the instructions in Section 4 of this article.

Reset to factory settings

If the update didn’t help, do a soft reset (without data loss) or a full reset (remove all apps and settings).

Soft reset (reboot of the system):

1. Press the Power button on the remote (or on the TV) on the 10-15 seconds.
2. Wait for the reboot. This is a method that helps with temporary failures.

Full reset (Hard Reset):

1. Go to Settings. → The device → Resetting settings (or Settings) → System system → Reset for Google TV).
2. Choose Delete all data and confirm.
3. After resetting, the TV will reboot and prompt you to set it up as new.

⚠️ Note: Full reset will delete all installed apps, accounts and settings. If you used Mi Account to sync, some of the data can be restored after you log in to your account.

Clearing the cache and application data

If the TV is only slowing in certain apps (like YouTube or Netflix), clear their cache:

1. Go to Settings → Applications → Application Management.
2. Select the problem app.
3. Click Clear the cache and Clear the data.

For Google. TV The other way: Settings → Annexes → Installed annexes → [name] → Warehouse → Clear the cache.

3.Control and control problems

If the TV doesn't respond to the remote, but the buttons on the device are working, the problem is probably the connection between the remote and the TV.

3.1 Reconnecting the remote

For Bluetooth remotes (models of Mi) TV Stick or new TVs):

1. Go to Settings → Remote and accessories → Add an accessory.
2. Press and hold the Menu buttons. + OK remotely within 5 seconds.
3. Wait for the remote to appear in the list of devices and confirm the connection.

For infrared (IR) remote:

• 🔋 Check the batteries (even if they seem to work, replace them with new ones).
• 📸 Check the remote's IR transmitter through your smartphone camera, point the remote to the camera and press any button. If the transmitter is running, you'll see a flashing light.
• 🔍 Make sure there are no obstacles between the remote and the TV.

Resetting the remote settings

If the remote is connected but the buttons are not working properly (e.g. Volume)+ Open the menu, perform the reset:

1. Remove the battery lid.
2. Press and hold the Reset button (usually next to the batteries) for 10 seconds.
3. Reconnect the remote via the TV menu.

⚠️ Note: On some models (Xiaomi Mi) TV 4A) The Reset button is hidden under the sticker. Be careful not to damage the body.

Alternative control methods

If the remote does not work at all, use:

• 📱 Mi Remote (available for Android and iOS) connects via Wi-Fi or Bluetooth.

4. Flashing the TV through USB (if nothing helps)

If the TV is not turned on, hovers on the logo or cyclically reboots, forced flashing through the logo may be required. USB. This method is suitable for most Xiaomi models, including the Mi. TV 4/4A/4S/5.

Preparation of the firmware file

Download the official firmware for your model from the Xiaomi website:

1. Go to the support page of Xiaomi.
2. Choose your own TV model (e.g., Mi TV) TV 4A 32").
3. Download the latest stable firmware version (file with.zip extension).
4. Unpack the archive and copy the update.zip file to a flash drive formatted in FAT32.

⚠️ Note: Do not use flash drives larger than 32 GB – some Xiaomi models do not support large firmware drives. USB 3.0 (blue connectors) – they may not work.

The flashing process

Put the flash drive in. USB-TV port and follow the instructions:

1. If the TV is on, go to Settings. → On TV. → Updating the system → Update through USB.
2. If the TV isn't turning on, turn it off the socket. Press the Menu button on the case (not the remote!) and, holding it, plug the power in. 10-15 The recovery menu will appear. Select Apply update from USB and confirm installation.

Wait until the process is completed (around) 5-10 The TV will restart automatically.

If the TV doesn’t turn on after firmware or gives an error, repeat the process with another flash drive or check the integrity of the file. update.zip (The size of the device must match the size indicated on the Xiaomi website).

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Flashing through USB — It's an extreme method, but it restores 90 percent of the time, and the key is to use the official firmware for your model!

5. Hardware problems: when iron is to blame

If the software methods didn't work, it could be the hardware, and let's look at the typical malfunctions and their signs.

Nutrition problems

Symptoms:

• 🔌 The TV is not turned on at all (no indication).
• ⚡ It is turned off a few seconds after switching on.
• 💥 You hear clicks or crackles from the power supply.

What to do:

• 🔌 Check the power outlet and cable (try another cable).
• 🔋 If the TV is connected through a network filter, try turning it directly into the socket.
• 🔧 If the power supply is external (for example, the Mi) TV Stick, check it with a multimeter (voltage must match the one on the sticker).

If the power supply is faulty, you can replace it yourself (for models with an external unit) or contact the service.The cost of replacing the power supply for Xiaomi Mi TV 4A — near 1500-2500 ruble.

Malfunctions of the matrix or backlight

Symptoms:

• 🖥️ The screen doesn't light up, but there's sound.
• 🌈 Artifacts (stripes, spots, flickering).
• 🔦 Lighting flashes or works unevenly.

Diagnosis:

• 🔦 Light a flashlight on the screen – if the image is visible, the problem is the backlight.
• 🔌 Connect the TV to another signal source (e.g., via a different signal source). HDMI) — If the artifacts remain, the matrix is to blame.
• 🛠️ Check the matrix plumes (disassembly required).

⚠️ Warning: Matrix or backlight repairs at home are extremely complex and require special equipment. If the TV is guaranteed, contact the Xiaomi service center. The cost of replacing the matrix can reach 70% of the price of a new TV.

5.3 Overheating

Symptoms:

• 🔥 The TV is off through 15-30 minute.
• 🌡️ The body is hot (especially in the upper part).
• 💨 The fan (if any) operates at maximum speeds.

What to do:

• 🪟 Make sure the TV is in a well-ventilated place (not in a niche, not near the battery).
• 🧹 Clean the air vents of dust (use a vacuum cleaner or compressed air balloon).
• 🔧 If the TV is disassembled, check the heatpast on the processor (experience required).

For models without active cooling (e.g. Mi) TV 4S) The overheating can be caused by a dried-up thermopaste, and it's only going to help if you change the paste at the service center.

6.Sound and image problems

If the TV is turned on but there are problems with sound or picture, check the following points:

No sound.

Possible causes and solutions:

• 🔇 Check the volume level (sometimes the sound is turned off accidentally).
• 🔌 Make sure that the TV is not connected to the sound bar or receiver through the HDMI ARC — The sound can be sent to an external device.
• 🎵 Go to Settings. → Sound. → Output sound and select Integrated speakers.
• 🔄 Restart the TV – sometimes the sound disappears after the update.

If there is sound but is distorted or intermittent, the problem may be with the speakers or audio processor. Check the sound through the headphones (plug them into a 3.5mm or Bluetooth connector).

6.2 No images or artifacts

Diagnostic algorithm:

1. Check the cable. HDMI — Try another cable or port.
2. Connect the TV to another source (such as an Android set-top box or laptop).
3. If you use HDMI-ARC, Turn it off and check the image without it.
4. Go to Settings. → Screen. → Permission and select Auto or manually set supported permission (e.g, 1920×1080@60Hz).

If artifacts only appear in certain apps (like Netflix), the problem may be codecs. Update the app or reset it.

Problems with Wi-Fi and network

If the TV is not connected to the Internet:

• 📶 Check if Wi-Fi is working on other devices.
• 🔄 Reboot the router.
• 🔐 Make sure that the plane mode is not turned on in the settings of the TV.
• 📡 Try connecting via Ethernet cable.
• 🔧 If Wi-Fi is connected but the internet is not working, check your settings. DNS (Try using 8.8.8.8 or 1.1.1.1).

For Google models TV (Xiaomi TV Q2 and newer) can help reset network settings: Settings → Network and Internet → Additionally. → Reset Wi-Fi, mobile network and Bluetooth.

7. Hidden functions of the engineering menu

Xiaomi TVs have a hidden engineering menu that allows you to diagnose and fix many problems.

7.1 How to Open the Engineering Menu

Method 1 (for most models):

1. Turn on the TV.
2. On the remote, press sequentially: Menu → Up. → Up. → Down. → Down. → Left. → Right. → Left. → Right.
3. There's a Factory Menu menu coming up.

Method 2 (for Google) TV):

1. Go to Settings. → The device → Information.
2. Click 5 times in a row on the Build Number (the message "You became a developer") will appear.
3. Go back to Settings → System → Developer settings.

⚠️ Warning: Do not change the settings in the engineering menu unless you are sure of their purpose! Incorrect settings can lead to complete failure of the TV.

7.2.Useful functions of the engineering menu

Here’s what you can do in Factory Menu:

• 🔍 Matrix Test – Checking for Broken Pixels and Artifacts.
• 🔊 Test of speakers – checking sound at different frequencies.
• 📡 Test Wi-Fi/Bluetooth — diagnostics of network modules.
• 🔄 Reset EDID — Helps with problems with recognition of permissions HDMI.
• 📝 Error Logs – Viewing System Journals for Diagnostics.

For discharge EDID (If the TV does not provide the source permission):

1. In the engineering menu, select HDMI EDID.
2. Press Reset. EDID.
3. Reboot the TV.

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The engineering menu is a powerful tool, but use it with caution. If you are not sure about the setting, it is better not to change it or take a photo of the current settings before changing.

8.When to contact the service center

If you have tried all the methods, but the TV is still glitzy, it may be that the problem requires professional intervention.

• 💥 The TV does not turn on at all (no indication, does not respond to buttons).
• 🔥 There are physical damage (cracks on the matrix, traces of burning).
• 🔧 After flashing, the TV does not load (even in recovery mode).
• 💦 Divorces or spots appeared on the screen (liquid crystals leaked out).
• 🔊 No sound even through headphones (failed audio processor).

Before the service visit:

• 📝 Write down a TV model (located on the back sticker).
• 📋 Make a list of symptoms (when they appeared, after which they have already tried to correct them).
• 🔄 If the TV is guaranteed, do not open the case - this will void the warranty.

The cost of repairs in official service centers Xiaomi:

If the TV is guaranteed, the repair will be free (provided that the breakdown is not your fault).The warranty on Xiaomi TVs is 12 months from the date of purchase.

FAQ: Frequent questions about the glitches of Xiaomi TVs