Previous articleMissing sound on Xiaomi TV: full manual for recovery

Did you play your favorite TV show, but instead of dialogue, is it a death silence? Or is there a sound, but it is interrupted, distorted or heard only through external speakers? TV, Redmi Smart TV Xiaomi TV A Pros are more common than they seem, and the causes may be software failures (e.g., after an update). MIUI TV), and hardware problems - from oxidized contacts to failure of the audio chip.

It's important to determine if it's a local problem (e.g., sound is lost in only one app) or a global problem (no sound at all anywhere), the first is the software or settings, the second is the possibility of serious breakdowns, and we've put together all the working ways to recover sound, including hidden settings and diagnostic codes that you won't find in the official documentation.

Xiaomi doesn't always report well-known firmware bugs honestly. MIUI TV 3.0.12 for models 2021 was a massive failure with a lost sound when connected to the HDMI ARC. And in Redmi Smart. TV X55 The sound may be "muffled" due to a conflict with the Dolby Audio function, these nuances should be considered before bringing the equipment to the service.

Basic diagnosis: exclude the obvious

Before you go through the settings, make sure that the problem is not external factors. 50% of the cases of missing sound are due to banal user errors.

Pay special attention to the remote control. on Xiaomi Mi models TV 4A redmi TV 70 is a bug when the Mute button sticks when pressed due to moisture:

1. Remove the batteries from the remote for 30 seconds.
2. Press and hold the Mute button for 10 seconds (discharge the residual charge).
3. Put the batteries back in and check the sound.

If the sound is not only in a particular app (like Netflix or YouTube), the problem is in the app itself. Update the app through the App Store or reinstall it. TV use the command:

adb uninstall com.android.tv.youtube

Then set it up. APK official website.

2. Sound settings: what could have gone wrong

Often the sound disappears after updating the firmware or resetting settings. TV There are hidden parameters that can block audio:

Path: Settings → Sound. → Additional settings

• 🔊 Sound mode: Must be Stereo (not Mono or Home Theater).
• 🎵 Audio format: for HDMI ARC choose PCM (If you are using Auto or Dolby Digital, you may have problems).
• 🔇 Volume normalization: Turn off this feature – it sometimes “eats” the sound.
• 🔄 Digital output: if external speakers are connected, select HDMI ARC Optical, depending on the interface.

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On Xiaomi models TV Q1 and Q2 there's a function bug AI Sound. If it's on, the sound may disappear when you switch channels. Turn it off in Settings. → Sound. → AI Sound.

If you see gray text or unavailable options in the audio menu, it's a sign of a firmware failure. Try resetting the audio settings to factory:

1. Go to Settings → System → Resetting settings.
2. Select Reset only the sound settings (if there is no such option, make a full reset).
3. After restarting, reset the sound.

⚠️ Attention: On Xiaomi TVs with Android TV 9+ After the sound reset, the option may disappear HDMI ARC To get it back, disconnect the TV for 5 minutes, then turn it back on.

3.Problems with HDMI ARC and external devices

If you connect the TV to the soundbar or receiver through HDMI ARC (Audio Return Channel, the sound may be lost due to protocol conflict:

For diagnosis. HDMI ARC:

1. Turn off the cable. HDMI port-of-port ARC TV and soundbar.
2. Reboot both devices.
3. Connect the cable back, making sure it is inserted before the click.
4. In the TV menu (Settings) → HDMI) turn on the option HDMI-CEC (It could be called AnyNet.+ or BRAVIA Sync depending on the model).

⚠️ Attention: On the TVs Xiaomi Mi TV 4S (2019–2020 model year) port HDMI ARC It can conflict with Game Mode. If you play the console through that port, the sound will disappear. HDMI-port.

4. Firmware reset and update

If the sound is gone after a system update or a new app is installed, the firmware is to blame. Xiaomi regularly releases patches for audio bugs, but they are not always installed automatically. Here's how to return the sound through an update:

Method 1: Update via the Internet

• 🌐 Go to Settings. → On TV. → Updating the system.
• 🔄 Click Check for Updates.
• 📥 If a new version is available, install it (the TV will restart automatically).

Method 2: Manual installation of firmware (if there is no Internet)

1. Download the firmware for your model from the official Xiaomi Support website (choose a version marked Stable).
2. Copy the.zip file to a flash drive (FAT32 format).
3. Put the flash drive in. USB-port.
4. Go to Settings → About TV → Update via USB.

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If the sound doesn’t appear after the update, reset to factory settings. On Xiaomi TVs, this does not delete personal data (as on smartphones), but only returns system settings to default.

For full discharge:

1. Open Settings → System → Resetting settings.
2. Select Reset all settings (you will need to enter) PIN-code, if it is installed).
3. After restarting, reset the TV.

⚠️ Attention: On Redmi Smart models TV X50 and X65 After the reset, the Dolby Audio option may disappear from the audio menu. That's OK, the feature will return after the first Internet connection and license checks.

5. Hardware malfunctions: when without service can not do

If none of the software methods worked, the problem is probably hardware. Here are the typical breakdowns and their signs:

You can check only the condition of the connectors and the connection of the speakers:

1. Turn off the TV and remove the back cover (on Xiaomi Mi models) TV 4 it's attached to the latches).
2. Check whether the plumes of the speakers are tightly connected to the motherboard.
3. Check the connectors. HDMI Optical for oxidation or damage.

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If you're unsure of your skills, don't try to disassemble the TV yourself. - Xiaomi models TV A Pro and the latest QLED We use fragile plumes that are easily damaged.

On Xiaomi Mi TVs TV 4S 55" (2020 release) meets a mass defect - the dump of the audio chip RT5651 Signs: the sound disappears after 10 to 30 minutes of operation, repairs are possible only by replacing the chip in the service center.

6. Hidden service menus and diagnostic codes

Xiaomi TVs have hidden audio diagnosing menus that help you determine if there's a problem with the software or hardware, and here's how to open them:

Method 1: Dynamics test

1. Turn off the TV remote.
2. Press and hold the Menu buttons. + Volume Down on the remote.
3. Without releasing buttons, turn the TV on the network.
4. After 5 seconds, release the service menu.
5. Select Speaker Test and check each speaker.

Method 2: Audio chip verification (for experienced ones only)

1. Enter the code ##3646633## on the remote (like on your phone).
2. Go to the Audio section.
3. Check the status of Audio IC — If there is an Error or No Device, the chip is defective.

⚠️ Warning: Do not change the settings in the service menu unless you know what they mean! Incorrect settings can cause complete loss of sound or even failure of the motherboard. For example, changing the Audio Gain value above 100% can burn the amplifier.

7. Alternative solutions: if nothing has worked

If the sound never came, but the TV is still guaranteed, contact the Xiaomi service center.

• 📄 Prepare a check or a warranty card.
• 📱 Install the Mi Service app to record for repairs.
• 🚚 If the TV is large (55" or more), call the courier at home.

If the warranty is over and the repairs are too expensive, consider alternatives:

• 🎧 Connect Bluetooth column or headphones (in the Settings menu) → Bluetooth).
• 🔊 Buy the outside. USB-A sound adapter (like the Creative Sound Blaster) and connect it to the port USB TV.
• 📺 Use the Android console TV (Xiaomi Mi Box S with separate audio output.

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On Xiaomi models TV A Pro and Q2 There is a hidden Audio Mirroring feature that duplicates audio to connected Bluetooth devices## → Audio Settings).

FAQ: Frequent questions about the sound on Xiaomi TV