One Xiaomi headphone doesn’t work: A complete guide to diagnosis and repair

Why does one Xiaomi headphone stop working?

Xiaomi wireless headphones are a popular solution for music lovers and active users, but even they are not immune to breakdowns. The situation when one earphone stops playing sound is most common. The reasons can be both software (firmware failure, pairing error) and hardware (distoromic damage, break contacts).

In this article, we will look at all possible causes of malfunction and offer proven ways to fix them, from a basic reboot to disassembling the body. TWS-If you're not confident in your abilities, you should go to the service center, but most of the problems are solved at home.

Before you start repairing, answer the question: which earphone does not work, left or right? This will help narrow down the possible causes. For example, if the right earphone is silent, often the main microphone is to blame (it is usually located on the right), and if the left one, the problem may be synchronization with the smartphone.

Basic diagnosis: Checking the obvious

Start with the simplest steps, often the problem is solved in 2 minutes. First, make sure the headphone is charged. Even if the indicator on the case is green, it does not guarantee that both earphones have enough power. Take them out of the case and look at the charging indicators on the headphones themselves (if any). For example, Redmi AirDots 3 at low charge flashes a red LED.

Check the physical connection:

• 🔊 Clean the contacts on the headphone and in the case with a cotton swab dipped in alcohol. Oxidation or dirt can interfere with charging.
• 📱 Reconnect the headphones to your smartphone: forget the device in Bluetooth settings and pair again.
• 🔋 Try another case (if possible). Sometimes the problem is the charging connectors inside the case.

If the earphone is on but not making sound, try listening to music from another device (tablet, laptop) to help eliminate a smartphone problem, and check the sound balance in the audio settings, sometimes one channel accidentally dimmed to zero.

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Xiaomi headphones often "glut" after updating the firmware of the smartphone. Try to roll back the MIUI update or reset the network settings on the phone.

2. Resetting headphone settings to factory

If the basic check didn't work, the next step is hard reset, which removes all the pairing settings that you saved and returns the headphones to their original state. For Xiaomi models, the reset is done differently depending on the generation:

Redmi AirDots 1/2/3 and Mi True Wireless Earbuds Basic 2:

1. Put both headphones in the case and close the lid.
2. Press and hold the button on the case (usually located behind) for 15-20 seconds until the indicator flashes red and white.
3. Get the headphones out - they will automatically go into pairing mode.

For Xiaomi Buds 3/4 Pro and new models:

1. Get the headphones out of the case.
2. Press and hold the touchpads on both headphones simultaneously for 10 seconds until you hear the beep.
3. The indicators should flash alternately red and white.

After reset, try reconnecting your headphones. If one of them still doesn't work, move on to the next step.

3. Checking software settings on a smartphone

Sometimes the problem is not the headphones, but the phone settings. On devices running MIUI (Xiaomi firmware), there are several nuances that can lead to the failure of one of the headphones:

• 📵 One earphone mode. Some versions MIUI There's a feature that allows you to use only one headphone to save charge. → Bluetooth → Headphone settings → One-ear headphone mode (turn off if on).
• 🔊 Mono audio. In the special features settings, the monophone mode can be activated. → Special facilities → Rumor → Mono-audio.
• 🔄 Bluetooth codec conflict. Try changing the codec in the developer: Settings → The phone. → Version. MIUI (5 times to tap) → For developers → Bluetooth Audio Codec. Select the Bluetooth Audio Codec. SBC instead AAC or.

It's also worth checking if a third-party app is blocking the sound in one of the headphones, for example, some players (like Poweramp) have separate balance settings. Go to the audio player settings and reset all the sound settings to the factory.

Check One Headphone mode in MIUI| Turn off mono audio in special features | Change Bluetooth codec on SBC| Update the headphone firmware via Mi Home| Remove the Bluetooth app cache

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4. Update to the headphone firmware

Xiaomi regularly releases firmware updates for its wireless headphones to fix synchronization and sound errors.If one headphone stopped working after upgrading a smartphone or headphones, a rollback or forced upgrade may be required.

To check and update the firmware:

1. Install the official Mi Home app (available for Android and iOS).
2. Connect the headphones to the phone via Bluetooth.
3. Open Mi Home, find your headphones in the list of devices and go to their settings.
4. If an update is available, follow the instructions on the screen. Don't interrupt! This can cause the device to fail completely.

If the update doesn’t help or the headphones aren’t defined in the Mi Home, try resetting them (as described in Section 2) and repeating the procedure. For some models (such as the Xiaomi Buds 3 Pro), the firmware update is only possible through the Xiaomi Earbuds app – it’s also worth installing.

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If after updating the firmware one headphone stopped working, try rolling back the version through Mi Home. To do this, in the headphone settings, find the item "Restore the previous version" (available not for all models).

5. Hardware malfunctions: what can be done independently

If the software methods didn't work, it's probably hardware, and let's look at the most common breakdowns and how to fix them without going to the service.

To disassemble the headphones will need:

• 🔧 Plastic mediator or thin screwdriver.
• 🔥 Fryer (for softening glue).
• 🧲 Tweezers and soldering iron (if you need to repair contacts).

Attention! Disassembling headphones deprives you of warranty. If the device is warranty, you should contact the Xiaomi service center. For self-repair, we recommend watching the video instructions for your model on YouTube.

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Before disassembling, take a picture of each stage - this will help to properly assemble the earpiece back. Pay special attention to the location of the sealing rubber bands and microphones.

6. when you can not do without a service center

There are situations where self-repair is not possible or advisable.

• 💥 The headphone is physically damaged (cracks on the body, traces of fluid inside).
• 🔌 After disassembly revealed a break of tracks on the board or burned elements.
• 🔋 The headphone battery is swelling - it is dangerous!
• 📡 Bluetooth module problem (the headphone is not defined by any device).

The cost of repairs in official Xiaomi services varies:

• Dynamic replacement: 800–1500 ₽.
• Battery replacement: 600–1200 ₽.
• Toll repairs: 1500–3000 ₽ (depending).

If headphones are older than 2 years, it is sometimes cheaper to buy new ones. For example, Redmi AirDots 3 cost about 2000-2500. ₽, Before you visit the service, check if there are spare parts for your model - some components (for example, for old Mi AirDots) are no longer produced.

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Official Xiaomi service centers in Russia can be found on the website mi.com/ru/service. Always check the reviews of the workshop before visiting - this will save you from unscrupulous performers.

7. Prevention: how to prolong the life of wireless headphones

To avoid problems in the future, follow simple rules:

• 🚫 Do not store headphones in wet places (bathroom, kitchen next to the sink).
• 🔋 Charge the case every 2-3 months, even if you don't use headphones. Lithium batteries deteriorate from full discharge.
• 🧼 Clean your headphones 1 time a week with a dry soft brush (such as a toothbrush).
• 📵 Avoid extreme temperatures (do not leave in the car in the sun or in the cold).

You should also upgrade your headphone firmware to the latest version and avoid connecting to uncertified chargers. If you use headphones while exercising, buy hydrophobic cases that protect you from sweat and rain.

Frequently asked questions