Previous articleMissing sound on Xiaomi TV: what to do if the TV does not make a sound

Why Xiaomi TV suddenly stopped making sound?

You turned on your favorite TV, and the Xiaomi Mi TV, Redmi Smart TV or model from the A Pro series suddenly “numbed”? There can be dozens of reasons – from accidentally pressing a button on the remote to serious hardware breakdowns. 90% of sound problems are solved in 5-15 minutes without calling the wizard, but it is important to act systematically: first check the obvious, then move to complex settings.

In this article, we'll look at all possible scenarios, from software failures to physical speaker malfunctions, how to diagnose a problem by proxy (e.g., whether the sound is working through the headphones), what MIUI TV settings are responsible for the audio, and when to bring the TV to the service. For convenience, we've compiled a table of typical code errors and added interactive checklists to keep things in mind.

Let’s start with the simplest – check connections and basic parameters.

1. Check connections and external devices

Before you dig into the settings, make sure that the problem is not due to external factors. In 30% of cases, the sound is lost due to improper cable connection or a failure in peripheral devices.

Follow this algorithm:

• 🔌 Disconnect all external devices (configures, sound panels, receivers) from HDMI/optical-Connect the signal source directly to the TV, for example, insert a cable from an antenna or router into the connector. HDMI 1 (ARC).
• 🎧 Check the headphones: if the sound is going through them, the problem is with the settings of the output audio device (more on this below). TV Q2 And the newer headphone jack can automatically turn off the built-in speakers.
• 🔄 Reboot the TV with a button on the case (not the remote!) Hold it for 10-15 seconds, this will reset the temporary errors of the sound processor.
• 📺 Change the signal source: switch from HDMI on TV (antenna USB. If the sound appears, the problem is in the cable or external device.

If after these manipulations the sound did not return, proceed to the system settings.

2. Sound settings in MIUI TV: what could have gone wrong

The MIUI TV interface hides several pitfalls that can make the sound disappear.For example, the Xiaomi TV P1 and Redmi X50 models have a separate setting for the output audio device, which sometimes gets lost after an update.

How to check:

1. Open Settings → Sound.
2. Make sure that the TV Dynamics section selects the Output section, not HDMI ARC or Optical.
3. Check the volume slider – it could have gone off to “0” after connecting Bluetooth devices.
4. In the Additional Settings → Sound Mode, select Standard (sometimes users accidentally activate the Hearing-impaired mode, which distorts the sound).

On Android TV 10+ models (like the Mi TV Q1 2023), the Digital Sound section has been added, so if you have Dolby Digital on and your receiver doesn't support it, there's no sound. Try switching to PCM.

3. Resetting sound settings to factory

If manual tuning didn’t work, return the audio settings to the out-of-the-box state.This won’t affect other TV settings (Wi-Fi, apps, etc.), but it will reset all audio settings.

Instructions:

1. Go to Settings → All settings → Sound.
2. Scroll down and select Reset Audio Settings (on some models, the item is called Reset by default).
3. Confirm the action. The TV will reboot.

After reset, check the sound on a variety of sources: the built-in player, YouTube, the HDMI device, and if the problem persists, the causes go deeper.

⚠️ Note: On Xiaomi TVs with firmware older than 2021 (e.g. Mi) TV 4S 55") The sound reset can also return the factory volume to 50 percent. If you wanted a different volume, you'd have to reset it.

4. firmware update: when the sound disappears after the update

Redmi Smart TV X55 and Mi TV A55 users often experience sound loss after an automatic firmware update, due to bugs in the audio driver that Xiaomi fixes in future versions.

How to manually update:

• 📥 Download the latest firmware for your model from the official Xiaomi website (select the section). TV).
• 📁 Save the file (usually with the.zip extension) to the flash drive formatted into FAT32.
• 🖥️ Put the flash drive in. USB-TV port, then go to Settings → On TV. → Updating the system → Update through USB.

If the sound didn't appear after the update, try rolling back to the previous firmware version.

1. Download the archive with the desired version (for example, V12.0.4.0 instead of V12.0.5.0).
2. Rename the file to update.zip and place the USB drive at the root.
3. In the update menu, select Update via USB and confirm the rollback.

⚠️ Warning: Firmware rollback will reset all TV settings to factory settings.Pre-record Mi Account details and Wi-Fi passwords.

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Before upgrading via USB, disconnect the TV from the Internet (Wi-Fi or cable) so that the system does not block the installation of “old” firmware.

5. Hardware malfunctions: when without service can not do

If all the software methods have been tried and the sound has not appeared, the problem is probably the hardware. Here are the typical hardware breakdowns of Xiaomi TVs and their signs:

It is not recommended to repair the hardware on your own, and without experience it is easy to damage the board or speakers, but you can do a preliminary diagnosis:

• 🔊 Speaker vertebrae: disconnect the TV from the network, remove the back cover and check the speaker circuit with a multimeter (resistance should be 4-8 ohms).
• 🔍 Visual inspection: Look for bloated capacitors or burnt tracks on a sound board (usually located next to connectors) HDMI).
• 🔥 Overheating test: Turn on the TV and after 15 minutes touch the radiator of the sound chip (located near the speakers) – if it is hot, this confirms the problem with cooling.

If you are not sure of your abilities, take a picture of the board and show the photo to the master - this will help to more accurately diagnose the problem.

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Xiaomi TVs older than 2019 (e.g. Mi) TV 4A) often fails sound chip TAS5707. Its replacement costs 2,500-3,500 ₽, It solves the problem forever.

6. Alternative methods of sound output

While the TV is being repaired or you're waiting for parts, you can temporarily output the sound through external devices.

• 🎵 Bluetooth Column or Headphones: Connect them through Settings → Bluetooth, on Mi models. TV Q2 AptX is supported for high sound quality.
• 🔊 Sound panel through HDMI ARC: Connect the panel to the port HDMI ARC and in the sound settings, select Exit through HDMI ARC.
• 📡 Optical cable (TOSLINK): If your TV is equipped with optical output (there is on Mi). TV P1 and older), connect it to the receiver or active speakers.
• 💻 Analog output (3.5 mm): on some models there is a headphone jack - you can connect active speakers with it AUX-entrance.

To connect to HDMI ARC or Optical, you may need to adjust the sound delay (lipsinc).

1. Open Settings → Sound → Additional settings.
2. Find the item Sound Delay (or AV Sync).
3. Set the value from 0 ms to 200 ms until the sound is synchronized with the image.

7. Frequent errors and their codes: decryption

Xiaomi Android TVs sometimes display audio-related error codes, and here are the most common ones:

If an error code appears on the screen, take a picture of it and check with Xiaomi support via the chat app Mi Home. Sometimes errors are associated with regional restrictions - for example, on TVs for the Chinese market (Mi TV ES) can block sound when connecting to European services.

Frequently asked questions