Did you turn on your favorite series on Xiaomi Mi TV, but instead of dialogue, a death silence? Or did the sound suddenly break in the middle of the movie and the volume control doesn't help? This problem is familiar to many owners of Xiaomi TVs - from budget models of Mi TV 4A to flagship QLED Q2. In 80% of cases, the malfunction is due to software failures or improper settings, but sometimes the hardware components are to blame.
In this article, we’ll look at all the possible causes of sound loss on Xiaomi TV, from trivial (like activated No Sound mode) to complex (damage to the audio chip), you’ll get step-by-step instructions with screenshots, a symptom table for quick diagnosis and answers to frequent questions, and if the problem turns out to be hardware, you’ll learn how to save on repairs.
We warn you right away: don't rush to bring your TV to the service center. In our experience, 9 out of 10 cases resolve themselves in 5-15 minutes. Start by checking the obvious - maybe the sound is simply redirected to Bluetooth headphones or turned off in the system settings.
1. Checking basic settings: 3 steps before in-depth diagnosis
Start with the basics, and users often spend hours looking for a fault when the problem is in the little things.
- 🔊 Make sure the sound is not physically turned off by pressing the Mute button on the remote (or side panel of the TV.
- 🎧 Check connected devices: if you have Bluetooth headphones, soundbar or AV-receiver, audio can be automatically redirected to them. → Bluetooth or Settings → Sound. → Output devices.
- 🔄 Reboot the TV: Pull the power cord out of the socket for 30 seconds, then turn it on again.
If you don't have a sound after this manipulation, move on to the next sections, and pay special attention to point 4, resetting the audio settings solves the problem in 40% of cases where other methods don't work.
2.The TV's audio settings: what could have gone wrong
Often, the sound is lost due to a system failure, such as a firmware update or a random push on the remote.
- Sound Mode: Go to Settings → Sound → Sound Mode. Make sure you choose Standard or Movie, not Deaf (this mode turns off sound for people with hearing impairments).
- Volume level: In the same menu, check the Volume slider - it could have gone as low as possible. Also turn off the Volume Auto Adjustment option if it is active.
- Output audio port: in Settings → Sound → Additional → Output port, select Built-in speakers (if you have a soundbar or receiver connected, the TV can automatically switch to them).
- Equalizer: Reset the equalizer settings to factory settings, as incorrect settings can "reset" the sound. To do this, click Reset on the equalizer menu.
If the sound never came back after the change, try resetting all the sound settings to the factory.
- Go to Settings → Sound → additionally.
- Select Reset sound settings.
- Confirm the action by entering PIN-code (default 0000 or 1234).
☑️ Diagnostics of sound settings
3. firmware problems: how software update or crash kills sound
One of the most common reasons for missing audio on Xiaomi TV is a firmware error, which can occur after:
- 🔄 Automatic updates (especially for Mi models) TV 4A mi TV 4S firmware older than 2022).
- 🛠️ Manual updates through USB (If the firmware file was corrupted or not suitable for your model).
- ⚡ Power failure during the update.
How to check if the firmware is to blame:
- Go to Settings → About TV → The version of the software.
- Compare your version to the latest official version on Xiaomi Support. If your firmware is older, you need to update it.
- Try to roll back to the previous version (if the sound is gone after the update). To do this, download the old firmware from the 4PDA forum and install it through Settings → Software Update → Update via USB.
If the TV doesn’t respond to commands or freezes when you try to upgrade, perform a forced reset:
- Turn the TV off the socket.
- Press the Menu button on the remote and the Power button on the TV body.
- Holding them, connect the power cord to the socket.
- Keep the buttons pressed for 10-15 seconds until the recovery menu appears.
- Select Wipe Data/Factory Reset (Reset to factory settings).
⚠️ Warning: Forced reset will remove all installed apps, accounts and personal settings. After the procedure, the TV will require initial setup, as after purchase.
How to find a firmware for your model?
4. Hardware malfunctions: when without repairs can not do
If the software methods didn't work, the problem could be the hardware, and here are the typical hardware breakdowns that make the sound on Xiaomi TV go missing:
| Malfunction | Symptoms | Possible causes | Cost of repair (2026) |
|---|---|---|---|
| Damage to the audio chip | There's no sound, not even on the menu. The speakers don't emit any signals. | Voltage drop, factory defect, physical damage to the board. | 3 000–8 000 ₽ |
| Breakdown of speakers' contacts | There's a sound, but it's very quiet or distorted, and when you tap the body, the sound can come in and disappear. | Mechanical damage, oxidation of contacts, factory defect soldering. | 1 500–4 000 ₽ |
| Maternity board malfunction | There's no sound, but there are other glitches: spontaneous reboots, artifacts on the screen. | Overheating, voltage surge, wear of capacitors. | 5 000–12 000 ₽ |
| Power supply problems | The sound disappears periodically, the TV can turn off itself. | Unstable voltage in the network, wear of the components of the block. | 2 000–6 000 ₽ |
How to diagnose a hardware malfunction:
- 🔧 Check the speakers: connect external speakers or headphones to the TV through 3.5 mm or HDMI ARC. If there is sound, the problem is with the speakers or their connection.
- 🔌 Test by other cable: if the sound is lost when connected through HDMI, Try another cable or port. HDMI-cable can block the audio signal.
- 📡 Checking on another source: connect another signal source to the TV (for example, a console or a laptop). If there is sound, there is a problem in the original device (for example, in a T2 receiver).
⚠️ WARNING: If you don't have experience in electronics repair, don't try to disassemble the TV yourself. - Xiaomi's modern models TV They have thin plumes and fragile attachments, and one wrong move can cause costly failure.
5.Sound problems when connecting external devices
If the sound is lost only when you connect a console, game console or soundbar, the problem lies in the settings of the external device or cable.
5.1.No sound when connected via HDMI
A common problem when using HDMI ARC/eARC or connecting to PlayStation/Xbox.
- Make sure the cable supports HDMI 2.0 or higher (for 4K@60Hz and multichannel audio).
- From the TV menu, go to Settings → HDMI → Sound Format and select Auto or PCM (if the sound is distorted).
- On an external device (such as Apple TV or NVIDIA Shield) select HDMI or Auto in the audio settings.
- Try another one. HDMI-port on the TV (for example, a port marked with a ARC).
5.2 Sound is available, but with a delay (lag)
Video audio delay is a common problem when connecting via Bluetooth or HDMI ARC.
- 🎵 For Bluetooth devices: in the settings of the TV, turn off the audio delay or set the value of 0 ms.
- 🔌 For HDMI ARC: Update the firmware of the TV and external device (such as the soundbar). → Sound. → HDMI ARC Turn on the option of synchronizing the lips.
- 🎮 For gaming consoles: in the console sound settings, select Exit through HDMI Turn off audio processing (e.g. Dolby Atmos on Xbox).
💡
If the sound is only lost when viewed via YouTube or Netflix, clear the app's cache: Settings → Apps → [Select App] → Clear the cache.
6.Resetting the TV to factory settings: Last chance
If all previous methods failed, you'll have a hard reset, which will return the TV to its original settings, but it will delete all the apps and accounts installed.
- Save important data: take a picture of your network settings (Wi-Fi password), list of installed applications and login from Mi Account (if linked).
- Perform reset: Settings → On TV. → Resetting settings → Reset all settings Enter PIN-code (default 0000 or 1234).
- Set up the TV again: after you reboot, go through the initial setup, like after you buy it. Don't restore the settings from the backup, it can return the problem.
If the reset didn't work, the problem is almost certainly hardware.
- Contact the official Xiaomi service center (warranty repair is free if you bought the TV less than 12 months ago).
- Check the TV on the 4PDA forum – it’s possible your model has a known defect that has a workaround solution for it.
💡
Resetting to factory settings solves the problem in 60% of cases when the sound disappeared after updating or changing the settings.
7 Prevention: How to Avoid Sound Problems in the Future
To prevent the sound from going out on your Xiaomi TV again, follow these guidelines:
- 🔌 Use a network filter: power surges are one of the main causes of failure of the audio chip. Connect the TV through a network filter or UPS.
- 🔄 Update your firmware regularly: install updates through the Settings menu → Update the software, but not through USB, If you are not sure about the source of the files.
- 🎛️ Do not change the sound settings at random: it is especially dangerous to edit the settings. HDMI ARC, Dolby Audio or Equator without understanding their purpose.
- 🛠️ Check the cables: every 3-6 months, inspect the cables HDMI And audio cables for damage, replace them at the first sign of wear and tear.
- 📦 Avoid overheating: Do not place the TV in closed niches or near heat sources.
If you frequently connect external devices (such as a soundbar or console), create a separate setting profile for each scenario.
- For the movie: HDMI ARC + Dolby Digital.
- For games: HDMI 2.1 + PCM (minimum latency).
- For music: Bluetooth + Equalizer with low frequency amplification.