Why does not work one headphone in wireless Xiaomi: diagnosis and repair

Why Xiaomi has stopped playing: the main reasons

You have pulled out of the case headphones Xiaomi AirDots, Redmi Buds or Mi True Wireless, but the sound comes from only one – the classic situation faced by owners. TWS-There are dozens of reasons, from a simple battery discharge to a serious break in the speaker, and in this article we will examine all possible scenarios for why the left or right earphone is silent, and what to do about it, from simple smartphone settings to disassembling the body.

First, determine which headphone is not working: the main (usually the right one, it connects to the phone directly) or the secondary (left one, connects to the right one via Bluetooth), which determines the diagnostic algorithm, and also note whether the indicator flashes on the non-working earphone when removed from the case, which will tell you whether there is a power problem or a connection problem.

If the headphone is completely dead (it doesn't blink, it doesn't make sounds, it doesn't detect the phone), it's probably the hardware that's at fault -- the battery is dead, the contact is gone, or the controller is burned. If the light is on but there's no sound, the problem may be the phone settings, the headphone firmware, or the mechanical damage to the speaker.

1. Checking the phone's sound balance and settings

The first thing to rule out is the software settings on your smartphone, and often users accidentally knock the balance of sound between the left and right channels or activate monosound.

• 🔊 Sound balance: on Android go to Settings → Special facilities → Hearing settings → The stereo balance. The slider should be in the middle. On the iPhone: Settings. → Universal access → Audiovisual content → Balance.
• 🎧 Monosound: In the same sections, disable the option "Mono Audio" (on iOS) or "Monosound" (on Android). It brings the stereo to one channel, and it may seem that one earphone does not work.
• 📱 Bluetooth settings: remove the headphones from the list of associated devices (Settings) → Bluetooth) and reconnect. Sometimes it helps to reset Bluetooth on your phone.

If you don't have a sound after this manipulation, the problem isn't with the phone. Move on to the next step.

2. Battery discharge and charging problems

Xiaomi wireless headphones have small batteries (usually 40-60 mAh) that discharge unevenly. If one earphone doesn't turn on or immediately shuts off, it's likely to be dead. Here's how to check this:

• 🔋 Case Indication: Put your headphones in your case and look at the LEDs. If the headphone indicator doesn't flash red (charging), the problem is with the contacts or battery.
• ⚡ Direct charging: try charging the headphone separately by connecting to the charger via cable (if the model supports, for example, Xiaomi AirDots Pro 2).
• 🔌 Contact oxidation: inspect the metal contacts in the case and on the headphone - if they turn dark, wipe with alcohol or eraser.

If the headphone doesn't charge even after cleaning the contacts, the power controller or the battery may have failed, and only repairs will help.

💡

To extend the life of batteries, do not keep headphones discharged for more than a week - this leads to deep discharge and degradation of the battery.

3. Resetting headphone settings

If one earbud plugs in but there's no sound, try resetting it to factory settings. For most Xiaomi models, the procedure is the same:

1. Put both headphones in the case and close the lid.
2. Press and hold the button on the case (usually located behind) for 10-15 seconds until the indicator flashes red and white.
3. Remove the headphones from the case – they should automatically enter the pairing mode (the indicator flashes white).
4. Put them back on the phone.

For some models (for example, Redmi Buds 4 Pro) reset is performed differently:

1. Get the headphones out of the case.


2. Press the touch panels on both headphones for 10 seconds.




3. Wait for the double beep.

If the reset didn't work, the problem could be the firmware of the headphones.

Make sure your headphones are charged at least 30 times%|

Close all applications using Bluetooth|

Remove the headphones from the case before reset |

After reset, remove them from the list of devices in the phone-->

4. Firmware updates and software failures

The firmware in Xiaomi headphones is responsible for synchronizing sound, gesture control and power consumption. If one earphone is connected, but the sound is delayed or interrupted, you may need an update. Here's how to do it:

• 📲 Download Mi Earphones (for AirDots) or Xiaomi Earbuds (for Redmi Buds) from Google Play/App Store. It has a section called "Firmware Update".
• 🔄 Manual firmware: For some models (for example, Mi True Wireless 2) you can find firmware on forums (for example, for example, 4PDA) and thread through ADB.
• 🚨 Synchronization failure: if one headphone stopped working after the update, try rolling back to the previous firmware version.

If the headphones aren't determined by the app, try connecting them to another phone or PC. If the problem persists, it's a hardware glitch.

Mechanical damage and repair

If all the software methods have been tried and one earphone still doesn't work, it's hardware failure.

Xiaomi headphone repairs are possible if you have experience with soldering and microelectronics. To replace the speaker or battery, you will need:

• 🔧 Open the case (usually it is on the latches, but some models are glued together).
• 🔍 Check the circuit with a multimeter (resistance speaker should be ~32 ohm).
• 🛠️ Replace the faulty component (speakers for Xiaomi can be found on AliExpress at the request "replacement speaker for [model]").

⚠️ Attention: when disassembling headphones, it is easy to damage the plumes or membrane of the speaker. If you are not confident in your abilities, you should contact the service. The cost of repairs usually does not exceed 1500-2000 ₽, What is cheaper than buying new headphones.

6. Bluetooth and compatibility issues

Sometimes one earphone doesn't work because of Bluetooth conflicts or phone incompatibility.

• 📱 Bluetooth Version: Xiaomi Headphones Require Bluetooth 5.0+. Older phones (such as Bluetooth 4.2) may have stereo issues.
• 🔄 Low Latency Mode: Some phones (e.g. Xiaomi, Realme) have the option of “Dual Connection” or “Low Latency” in Bluetooth settings – turn it on.
• 🎵 Bluetooth Codecs: In Android Developers (Settings) → System system → For developers → Bluetooth codec) select AAC or SBC ptX.

If the problem is with only one phone, try connecting the headphones to another device. If both headphones are working on the second phone, the problem is with the settings or firmware of the first smartphone.

💡

Xiaomi headphones often conflict with Huawei and Honor phones due to different Bluetooth implementations, in which case only the firmware of the headphones or changing the phone will help.

7. When there's only a service center left

If you have tried all the ways, but one earphone never worked, there are two options:

1. Warranty repair: If you bought the headphones less than a year ago, contact the official Xiaomi service, you will need a check and a box, and under warranty, usually change the faulty earphone or the entire set.
2. Non-warranty repairs: in service centers or electronics repair shops Average prices: Diagnostics - 300-500 ₽. Replacement of the speaker - 800-1500 ₽. Battery replacement: 600–1000 ₽. Repair of fees - 1000-2000 ₽.

Before you carry your headphones for repair, check if it is cheaper to buy new ones. For example, Redmi Buds 4 cost about 2000-2500. ₽, If the repair costs half that amount, it makes sense to consider a replacement.

⚠️ Warning: Don't buy Xiaomi headphones "hands-on" without checking. Often sell devices with a faulty speaker or a dead battery that does not hold a charge. Before buying, ask the seller to shoot a video showing the work of both headphones.

FAQ: Frequent questions about Xiaomi's broken headphone