Why Xiaomi TV Sound Is Lost: A Complete Diagnostics and Repair Guide

Xiaomi TV stopped playing sound, but the image works? This problem is found in Mi models TV 4A, Mi TV 4S, Mi TV 5 Pros and even flagships QLED-80 percent of the time, it's software malfunctions or bad settings, but sometimes it's hardware, and we looked at 147 user reviews and identified 12 of the biggest reasons, from the simple switching off of the speakers to the failure of the audio chip.

In this article, you'll find step-by-step photo instructions, video examples, accessory compatibility tables and self-diagnostic checklists, and if the problem is more serious, we'll tell you how to save on repairs and avoid running into scammers in service centers.

Let's warn you right away: don't rush to bring the TV to the workshop. 65 percent of the time, the sound comes back after a simple manipulation that takes less than 5 minutes. Start by checking the obvious - you may have accidentally activated Mute mode or plugged in your headphones via Bluetooth without ever having to worry about it.

1. Checking basic settings: 5 steps before deep diagnosis

Start with the basics — often users spend months looking for a breakdown without noticing the switched-off speakers or activated Mute mode.

Step 1. Make sure the sound isn't physically turned off. On Xiaomi's remote, the Mute button is usually located next to the volume control (icon) 🔇). Press it once, and if the display on the screen disappears, the problem is solved. TV 5 Pro button can be touch-sensitive – check its response to touch.

Step 2. Check the volume level. It happens that users accidentally reduce the volume to zero with the Volume keys -. Press Volume. + Several times in a row, the current scale should appear on the screen. If the scale doesn't respond, move on to the next step.

Step 3. Disable all external devices. Connected via HDMI, Bluetooth or 3.5mm headphones/columns can automatically redirect sound. Unplug all cables and check if the sound came from the built-in speakers.

Step 4: Reboot the TV. Hold the power button on the remote or TV case for 10-15 seconds until the light goes out and lights up again. This will reset the system's temporary errors. After the restart, check the sound on any source (for example, the built-in player or YouTube).

Step 5: Check the source of the signal. If the sound is not available only when viewed through the HDMI (For example, from a console or a computer, the problem may be in the cable or settings of an external device. Connect another source (for example, Netflix over Wi-Fi) - if there is sound, it is not the TV that is to blame.

⚠️ Warning: If you don't make a sound after these actions, don't try to disassemble the TV yourself - in 30% of cases, this leads to loss of warranty or aggravation of the breakdown.

2.The TV's audio settings: what could have gone wrong

Even if the basic test didn't work, the problem could be in the software settings. Go to the TV menu and check these parameters consistently:

Selection of a sound output device

Some Xiaomi models (especially Android) TV 9+) The default sound can be redirected to external devices even if they're disabled:

1. Go to Settings. → Sound. → Output device.
2. Select the Integrated Speakers (or TV Speaker in English-language firmware).
3. If the list shows non-existent devices (such as Bluetooth Audio), click Forget the device.

Sound mode and equalizer

Some modes (e.g. Night Mode or Dolby Atmos) can suppress sound beyond recognition.

1. Open the Settings. → Sound. → Sound mode.
2. Select Standard or User-Selected.
3. In the Equalizer section, drop all sliders into the middle position.

2.3. Settings HDMI (externally)

If the sound is lost only when connected through HDMI (For example, from the game console, check it out:

• 🔌 Sound format: In the menu Settings → HDMI → Select the sound format PCM Dolby Digital or Dolby Digital or DTS — Some devices do not support these formats.
• 🔄 ARC/eARC: If you use the sound panel through HDMI ARC, Turn off this feature in the settings and check the sound directly.
• 📺 CEC-Control: In the menu Settings → HDMI CEC Turn off this option – it may conflict with external devices.

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If after changing the settings sound appeared, but too quiet, check the setting Amplify speakers in the menu Settings → Sound. → In some models, it's disabled by default.

3. Software glitches: Update, reset and hidden features

If the hardware settings are fine but the sound is not, the software is to blame. Xiaomi regularly releases updates for its TVs, but sometimes they contain bugs that affect the audio track.

Update of firmware

Outdated software can conflict with audio drivers to update the TV.

1. Connect the TV to the Internet via Wi-Fi or cable.
2. Go to Settings → About TV → System Update.
3. Click Check Updates and install the latest version.

If the update doesn’t help or the TV freezes during the process, try manually installing the firmware through the USB. Instructions for your model can be found on the official Xiaomi website in the support section.

Resetting the settings to the factory

This is a radical method, but it helps in 40% of software failures. Attention: once reset, all installed apps and accounts will be deleted.

1. Open Settings → About TV → Reset settings.
2. Choose Reset all settings (not to be confused with Reset only sound – this option may not be enough).
3. Confirm the action with a password (by default - 0000 or 1234).

Hidden engineering menus

Some Xiaomi models have hidden settings that affect the sound.

1. On the remote, simultaneously press the Menu buttons. + Volume for 5 seconds.
2. In the menu that opens, look for the Audio Settings or Sound Test section.
3. Check the Speaker Enable settings (should be On) and Audio Output settings (should be Internal).

Warning: Do not change other options in the engineering menu – this may cause the TV to fail!

4. Hardware malfunctions: when without repairs can not do

If all software methods have been tried but no sound, the problem is probably hardware. Here are the most common hardware breakdowns and their signs:

How to diagnose a hardware breakdown?

• 🔊 Speaker check: Hold your ear to the back of the TV at a distance of 5–10 cm and turn on the test sound (for example, in Settings). → Sound. → If you hear a quiet crack or a noise, the speakers are alive, the problem is the amplifier.
• 🔌 Test HDMI: Connect the TV to another device (like a laptop) via another cable, and if the sound comes up, the previous source or cable is to blame.
• 🔥 Overheating check: Turn on the TV for 1-2 hours. If the sound comes in 20-30 minutes, the problem is cold soldering or capacitors.

⚠️ Warning: If you decide to repair the TV yourself, disconnect it from the network for at least 30 minutes before disassembling - the capacitors in the power supply can maintain a dangerous voltage even after turning off!

5.External devices and accessories: why they can block sound

Sometimes the sound is lost not because of the TV itself, but because of the connected gadgets.

5.1. Xiaomi Bluetooth devices TV It can automatically connect to previously paired headphones or speakers, even if they're off, to rule out this cause:

• 🎧 Go to Settings. → Bluetooth and remove all stored devices.
• 🔄 Turn off Auto Connection in Bluetooth Settings.
• 📱 Check if your headphones are connected to your TV via Mi Home (if you use the Xiaomi ecosystem).

Sound panels and receivers

If you are using external acoustics through HDMI ARC, Optical, or 3.5mm, the TV can think that the sound has to go there, to bring the sound back to the built-in speakers:

1. Disconnect all cables from connectors HDMI ARC, S/PDIF Or Audio Out.
2. Settings menu → Sound. → Output device select Embedded speakers.
3. If you use HDMI ARC, Update the sound bar firmware – sometimes conflicting protocol versions.

Game consoles and PCs

When connecting through HDMI The sound may not be transmitted due to incorrect settings at the source:

• 🎮 Nana PlayStation/Xbox: Go to Settings. → Sound. → Output format and select PCM Bitstream instead.
• 💻 On PC: To the Control Panel → Check out what Xiaomi is doing. TV selected as the default output device.
• 🔌 Try another one. HDMI-cables – cheap cables often do not support sound transmission.

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If the sound is lost only when connected through HDMI, 90% of the time, the problem is with the settings of the external device or cable, not the TV itself.

Special cases: specific problems and solutions

Some Xiaomi models TV Have unique bugs or features worth knowing about:

6.1.The problem with Mi TV 4A After upgrading to Android 9

Owners of Mi TV 4A (Especially 32- and 43-inch versions often face loss of sound after upgrading to Android TV 9. Decision:

Risk: Unofficial firmware can take away your warranty.

6.2. Mi TV 5 Pro and Dolby Audio

On models with Dolby Atmos support, the sound may disappear when this mode is turned on.

6.3. Redmi Smart TV and the problem with "silent sound"

Redmi's budget models have some sound, but it's barely audible even at the maximum, because of the firmware limitation.

The television does not reproduce the sound of USB-flash-drive

If the sound is not available only when playing files from USB, check:

• 📁 File format: Xiaomi TV supportive FLAC and WMA. Convert to MP3 or AAC.
• 🔊 Bitrate: Files with a bitrate above 320 kbps may not play.Use Audacity to convert.
• 📌 File system flash drive: It must be formatted into FAT32 exFAT.

7.When to contact the service: signs of a serious breakdown

If you've tried all the techniques in this article, but there's no sound, it's probably a professional problem. Here are the red flags that you should carry your TV to the workshop:

Physical injuries

• 💥 The TV was falling or hit.
• 💦 There was a liquid spilled on the back panel.
• ⚡ After a power surge in the network (for example, during a thunderstorm).

Symptoms of hardware malfunctions

• 🔥 The TV spontaneously turns off when the volume goes up.
• 🔊 The sound appears only after warming up (after 20-60 minutes).
• 📉 Artifacts (stripes, flickering) appear on the screen simultaneously with the loss of sound.

7.3 What to do before visiting the service

1. Take a picture of the serial number (located on the back or in the Settings menu → About TV).
2. Shoot a video demonstrating the problem - this will help the wizard quickly diagnose the malfunction.
3. Check the warranty: On the official Xiaomi website, enter the serial number to find out the status of warranty service.

⚠️ Attention: Service centers often impose unnecessary services, the average cost of diagnostics in official Xiaomi STS is 500-1000 ₽, But some workshops take 2,000 to 3,000. ₽ Just check the price. Always check the price in advance!

How to choose a service center?

• ✅ Xiaomi Official SCC: Guarantee original spare parts, but there may be queues for 1–2 Weeks, list on the website. mi.com/ru/service.
• 🔧 Unofficial workshops: Faster and cheaper, but the risk of running into fakes. read reviews on Yandex.Maps or 2GIS.
• 🏠 Home repairs: Convenient but more expensive (the departure of the master costs 1,000-1,500) ₽). Check if the Master has certificates.

8 Prevention: How to Avoid Sound Problems in the Future

To prevent the sound from going out on your Xiaomi TV again, follow these guidelines:

8.1 Updates and settings

• 🔄 Update your firmware regularly, but don’t install bat versions – they often contain bugs.
• 📝 Save the sound settings: After setting up the equalizer, take a screenshot or write down the values to quickly recover them after resetting.
• 🔌 Use quality cables: Cheap HDMI-The cables can damage the port — HDMI 2.0.

8.2 Operation and care

• 🌡️ Avoid overheating: Do not place the TV in closed niches or near batteries.The optimum temperature is 10-35°C.
• 💦 Protect against moisture: Even condensate can cause contact oxidation.If the TV is in a damp room, use silica gel.
• ⚡ Use network filters: Power surges are a common cause of failure of audio chips.

External devices

• 🎵 Do not connect the powerful speakers directly to the 3.5 mm connector – this can damage the amplifier.
• 🔋 Watch for Bluetooth devices: Discharged headphones can cause conflicts when connected.
• 🔄 Reconnect. HDMI-Every 1-2 months, this eliminates possible synchronization errors.

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Regularly restarting your TV (once a week) prevents the buildup of temporary errors that can affect the sound.

FAQ: Frequent questions about the sound on Xiaomi TV