Why there is no sound on Xiaomi: a full analysis of the problems with sound on phones and TV

You've played the video on the Xiaomi Redmi Note 12, but the speakers are silent. TV Q2, And the sound disappeared after the upgrade, and the situation is different, but the result is the same: the lack of sound makes even top-end equipment a useless brick. This problem occurs in 30% of service center calls, and in 70% of cases it can be solved independently.

We analyzed 150.+ We have identified 10 main reasons why the sound on Xiaomi devices is missing - from banal settings to hardware malfunctions:

• 🔍 Diagnosis by symptoms (sound is in headphones, but not in speakers; the sound disappears periodically, etc.)
• 🛠️ Step-by-step instructions for smartphones (Redmi, POCO, Mi) and TVs (Mi) TV, Xiaomi TV A)
• ⚠️ Warnings that will prevent the problem from worsening (for example, why you can not reset your settings on Mi) TV backup)
• 📊 Accessories compatibility table (which headphones/columns work with Xiaomi without any problems)

If you're not a techie, don't worry. We've broken down solutions by difficulty level, from "check the volume control" to "how to solder the speakers' contacts." Let's start with the simplest.

1. Software failures: when there is sound, but it is "not heard"

In 40 percent of cases, the sound is lost because of software failures, not because of hardware failures, and the first thing you need to do is eliminate the "soft" problems, and they fall into 3 categories:

• 📱 OS failures (MIUI Android TV) — The sound is there, but not played in specific applications (YouTube, Netflix)
• 🔊 Sound settings – system sound is turned off, Do Not Disturb mode is activated or monosound is turned on
• 🔄 Conflict updates – after the update, the sound in the speakers disappeared, but remained in the headphones

Let's start with a basic check.

1. Make sure the volume control is not at zero (press the physical volume button up).
2. Check the Settings. → Sound and vibration → Media volume – slider should be above 50%.
3. Turn off Settings. → Do not disturb or in your pocket (on some models) POCO he's blocking the sound).

On the Mi TV:

1. On the remote, press Settings (cogs) → Sound. → Sound mode – select Standard (not Deaf or Night).
2. Check if it's activated. HDMI ARC (if external speakers are connected – it can redirect sound to a non-existent device.
3. Go to Settings. → System system → Reset → Resetting sound settings.

If you don't get the sound after this manipulation, move on to the next section. If you've solved the problem, remember that 90% of the time, Xiaomi's audio failures are due to incorrect settings or application conflicts.

2 App conflicts: why there's sound on YouTube but not on Netflix

A typical situation is that the sound is running in a standard player, but disappears in TikTok, Instagram or Movie Search, caused by codec conflict or app restrictions. For example, Netflix blocks the sound on uninstalled devices (unless your Redmi is certified for the use of a video game). HD-content).

How to diagnose:

Instructions for cleaning the cache of media services (for smartphones):

1. Go to Settings → Applications → Application Management.
2. Click on the three points at the top → Show the system.
3. Find Media Storage (com.android.providers.media) and Audio Service (com.android.media).
4. In each application, click Storage → Clear the cache.
5. Reboot the phone.

💡

If the sound is lost in only one application (for example, in the VK Music, try removing it and reinstalling it. Often, resetting the permission to access the microphone/speakers in the app settings helps.

For Mi TVs, TV with a sound problem in specific applications (e.g. MEGO or Okko):

• 🔄 Reinstall the app through the Mi App Store.
• 📦 Clear the application data in Settings → Annexes → [Title of the annex] → Clear the data.
• 🔊 Check the sound settings inside the app itself (sometimes there’s a separate volume control there).

Hardware problems: when speakers are physically silent

If the software methods didn't work, it's time to check the hardware. Xiaomi's smartphones are more likely to fail:

• 🔈 Lower speaker (on Redmi Note models) 10/11/12 It is located next to the Type-C connector and is clogged with dust).
• 🎧 3.5mm connector (if any) – oxidation of contacts leads to “deception” of the system (it “thinks” that the headphones are connected).
• 📶 Antenna module (on POCO X3/X4 It can affect sound when a bad network signal is used).

For Mi TVs, TV quirky:

• 🔊 Sprayed speakers contacts (especially after falling or transporting).
• 🔌 Damaged. HDMI-if the sound is going through it).
• 📡 Faulty audio chip (on Mi models) TV 4S mi TV Q1 he's overheating a lot).

How to check the speakers on your smartphone:

1. Connect the headphones – if there is sound in them, the problem is in the phone’s speakers.
2. Call the phone from another device – if the interlocutor hears you, and you do not, the upper speaker (conversational) is to blame.
3. Run the speaker test through the engineering menu: ##4636## → Audio → Speaker Test

For TVs:

1. Turn off all external devices (soundbars, speakers).
2. Turn on the built-in radio or Mi Music – if there is no sound, the problem is with the speakers or audio track.
3. Light a flashlight into the speakers’ holes – if dust or foreign objects are visible, they must be carefully removed with a vacuum cleaner (at minimum power!).

⚠️ Warning: Don't try to disassemble the Mi TV You can do it yourself if you don't have experience. TV QLED The speakers are soldered to the board, and careless handling can damage the matrix.

4. Problems after the update: why the sound was lost MIUI 14/15

Updates MIUI Android TV They often break the sound, for example, after updating to MIUI 14 Xiaomi 12T And people were complaining massively about the loss of sound in their calls, and that was because they were not able to make a sound. audio_policy.conf, file responsible for routing sound.

How to fix it:

• 📱 For smartphones: Reset the sound settings: Settings → System system → Resetting settings → Reset sound settings. If it doesn't work, roll back the update (if available) or wait for a patch.

For TVs:

1. Go to Settings. → System system → Update of the PO → Remove the update (if the option is active).
2. If a rollback is not possible, reset to factory settings (but back up first!).

For advanced users (root or ADB):

adb shell su


mount -o rw,remount /system




rm /system/etc/audio_policy.conf




reboot

This command removes the problem sound configuration file, and the system will recreate it when you reboot it. Risk: If you're not sure what you're doing, you'd better not use this method, you might get a brick.

💡

If the sound is gone immediately after the update, do not rush to bring the device to the service. In 80% of cases, the problem is solved by rolling back or resetting the sound settings.

5. External devices: headphones, speakers and HDMI

Often, the sound is lost not in the device itself, but when external accessories are connected.

For Mi. TV troubled HDMI ARC:

1. Make sure the cable supports ARC (should be inscribed on the connectors).
2. In the settings TV Select Settings → Sound. → HDMI ARC → Included.
3. On the soundbar, activate the mode ARC or TV Sound.
4. If there is no sound, try another one. HDMI-port TV Q2 ARC It only works through the port. HDMI 3).

For smartphones with Bluetooth audio problems:

• 🔄 Reboot your phone and headphones.
• 📱 In Bluetooth settings, click on the gear icon next to the device. → Forget this device. → plug in again.
• 🔊 Check the codec in Settings → Bluetooth → [Headphone name] → Codec (select) AAC instead SBC pitch-wise).

⚠️ Note: On the Xiaomi 13 Pro and Mi 11 Ultra there is a bug with Bluetooth 5.2, which can cause the sound in the headphones to disappear when active Wi-Fi 6.

6.Water, falls and other physical injuries

If your Redmi falls into the water or Mi TV I was in the trunk without packaging, the sound could have gone missing:

• 💧 Corrosion of contacts (even after drying, oxidation can occur after months).
• 🔨 Disconnection of plumes (dynamics on POCO F3 squirt).
• 🔥 Overheating of the audio chip (on the Mi) TV 4A It is located next to the power supply).

What to do:

1. For smartphones: If your phone falls into the water, don't turn it on, bring it to the service. Even if it works, corrosion can occur later. If it falls from a height, check the speakers for cracks (carefully tuck the speaker grid with a plastic card).

For TVs:

• If Mi TV not switched on after transportation, check if the speakers have disconnected (when transported in a horizontal position, they can move).
• If the sound wheezes or is interrupted, the speaker membrane may have been damaged (replacement is needed).

How to check if there is a problem with water:

• Light a flashlight into the headphone jack and speakers - if white or green spots are visible, it's corrosion.
• Smell the Type-C connector – if you smell a faint smell of vinegar, it’s a sign of oxidation.

⚠️ Attention: On Xiaomi 12S Ultra speakers are located next to the Leica camera. If the phone falls, the sound may disappear due to damage to the flexible plume connecting the upper and lower parts of the body.

7.When to contact the service: signs of malfunction

If you’ve tried all the techniques in this article, but still no sound, it’s probably a hardware problem. Here are 5 signs that it’s time to get the device repaired:

• 🔊 The sound disappears completely (even in headphones and after resetting).
• 📱 The screen displays a message saying "Audio device not found" (on Mi). TV) or "Dynamic damaged" (on smartphones).
• 🔥 The device is overheated in the area of the speakers (on the POCO X3 Pro audio chip is located next to the processor).
• 💥 The sound is accompanied by wheezing or crackling (a sign of a damaged membrane).
• 🔌 After connecting the headphones, the sound is not restored even after they are turned off (the connection detector fails).

The cost of repair in official Xiaomi services (in Moscow, 2026):

Where to repair:

• 🏠 Official service centers - guarantee 6 months, but more expensive 20-30%. List on the site mi.com/ru/service/location.
• 🔧 Unofficial workshops are cheaper, but the risk of running into poor-quality parts (especially for Mi). TV).
• 📦 Self-repair – only if you have experience in soldering and diagnostics (youtube has disassemblies for Redmi Note 10 and Mi). TV 4A).

💡

If your device is warranty-free, don't open it yourself! 90% of the time, it will void the warranty, even if the problem isn't related to your actions.

FAQ: Frequent questions about Xiaomi sound