What to do if one headphone Xiaomi does not work: full instructions for diagnosis and repair

If you suddenly have one Xiaomi earphone, don't rush to throw it away or carry it to the service center. 80 percent of the time, you can solve the problem yourself in 10-30 minutes without having special skills. This problem is relevant for all models, from the budget Redmi AirDots to the flagship Xiaomi Buds 4 Pro, and the causes of failure are often the same.

In this article, we'll look at all the possible reasons why your left or right earphone is silent, from a simple battery discharge to hardware malfunctions. You'll learn how to diagnose without tools, what settings to check on your smartphone, and when it's really time to contact the service. And if the headset is still guaranteed, we'll tell you how to not lose the right to free repairs.

First, determine whether you have wired headphones or wireless (TWS), which determines the algorithm of actions, and also note whether the earphone is completely silent or the sound is distorted (wheezing, interruptions), which will help to determine the cause more accurately.

1. Checking the underlying causes: what to do first

Before you disassemble your headphones or reset your settings, eliminate obvious problems.These steps take no more than 5 minutes, but often solve the problem.

• 🔋 Battery charge: Xiaomi's wireless headphones can turn off one channel when charged low. check the indicator on the case - if only one LED is on, charge the headset 10-15 minutes and try again.
• 🎧 Connect to the device: Make sure the headphones are connected to the smartphone/PC as a stereo device, not as a mono-earhead. Bluetooth settings should display the model in its entirety (e.g. Redmi Buds 4 Lite, not LE-Redmi Buds 4 Lite).
• 🔊 Sound balance: In your device's sound settings, check if the balance slider is shifted left/right. On Android: Settings → Sound. → Balance of sound.
• 📱 Reboot device: Sometimes a glitch occurs on the side of the smartphone.Reboot the phone and reconnect the headphones.

If after this manipulation, the earphone is still not working, go to a deep diagnostic.

2. Diagnostics of Xiaomi wireless headphones (TWS)

Xiaomi wireless headphones (AirDots, Buds, FlipBuds) are more likely to fail due to synchronization problems with each other or with the sound source.

Resetting headphones to factory settings

If one earbud plugs in and the other doesn't, or it only sounds in mono mode, do hard reset.

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 of the case – they should automatically turn on and synchronize with each other (the indicators will flash alternately).
4. Connect to them via Bluetooth again.

For models Xiaomi Buds 3/4 Pro with touch control reset is performed differently:

1. Hold the touch panels on both headphones for 10 seconds.


2. Wait for the double beep.




3. Place the headphones in the case for 5 seconds, then pull out.

Make sure your headphones are charged (>30%)

Disable them from all devices in Bluetooth settings

Use the original case (non-third-party charging stations)

Reconnect only after full synchronization (indicators burn the same way)-->

Checking synchronization between headphones

If one earphone doesn't connect after reset, the problem may be the interchannel synchronization.

• 🔄 Take both earphones out of the case. They should flash white/blue at the same time.
• 🎵 If only one flashes, place both back in the case, close the lid for 10 seconds, then pull out.
• 📵 If the indicator on the problem headphone does not burn at all - this is a sign of hardware malfunction (breaking contacts or failure of the battery).

For models that support Mi Earphones (such as Xiaomi Buds 3 Pro), check the connection status in the program. If only one headphone is displayed, update the firmware through the application.

3. repair of Xiaomi wired headphones

In wired models (Mi Basic, Mi Hybrid, Mi In-Ear), the reasons for the silence of one earphone are usually due to damage to the cable or oxidation of the contacts. Diagnosis is easier than TWS, but requires accuracy.

Checking the cable for the break

The most common problem is a wire fracture at the base of a plug or an earpiece, to check this out:

1. Connect the headphones to the device and turn on the music.
2. Gently bend the cable in different places (especially at 3.5mm and USB-C connectors).
3. If the sound appears/disappears when bending, it is 100% a sign of a vein break.

For a temporary solution, you can fix the cable in the "working" position with tape, but it is better to solder or replace the plug. If you can not solder, contact the workshop (repair cost from 300). ₽).

Cleaning of connector and contacts

Oxidation or contamination of contacts is the second most common cause.

• 🧴 Cotton swab dipped in alcohol (for a 3.5 mm connector and headphone contacts).
• 🪛 Toothpicks – to carefully remove dirt from the nests.
• 🔌 WD-40 (Only for metal contacts! Apply minimally, then wipe dry).

After cleaning, check the headphones on another device. If the problem persists, the speaker or microphone (in models with a microphone on the wire) is likely to malfunction.

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To check the speaker, connect your headphones to your PC and use the Audio Tester program, which will show you whether the signal is being sent to both channels.

4. Problems with connection to the device

Sometimes the problem isn't with the headphones, but with the sound source -- the smartphone, the tablet, the PC.

4.1. Bluetooth settings on Android/iOS

On Android:

1. Open Settings → Connected devices → Bluetooth.
2. Find your headphones in the list and click ⚙️ (gear).
3. Make sure that options are included: 🎵 Used for media audio 📞 Use for calls (if supported)

Remove the device and reconnect.

On the iPhone:

1. Go to Settings → Bluetooth.
2. Click on the i next to the headphones name.
3. Select Forget this device, then plug it back in.

If the headphones are warranty (usually 12 months), do not disassemble them yourself - this will void the warranty.

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Xiaomi's warranty does not cover mechanical damage (dents, cracks, traces of moisture) and self-repair. Always keep the box and check!

6. Recovery after moisture is injected

If the earphone stops working after raining, sweating or washing, act quickly. Moisture can cause contacts to corrosion within hours.

Emergency measures (first 30 minutes)

1. 🚫 Turn off the headphone immediately (if there is a power button).
2. 🧻 Wet the moisture with a napkin or toilet paper.
3. 🌬️ Blow holes (microphone, speaker) with a dryer in cold air (keep at a distance) 20 centimeter, 2-3 minute).
4. 💊 Place the headphone in a silica gel bag (boxes of shoes/electronics) for 12–24 hours.

What can't be done:

• ❌ Dry with a hair dryer in hot air (plastic can deform).
• ❌ Put in rice (particles can get inside).
• ❌ Turn on the headphone to check until completely dry.

6.2. Cleaning after drying

After a day, take out the headphone and check:

1. Appearance: Is there plaque or rust on the contacts?
2. Connect to the device - if the sound appeared, but with wheezing, then moisture remained inside.
3. When wheezing, repeat drying for another 12 hours.

If the earphone didn't work after drying, it probably did a circuit on the board, and in this case, only repairs to the service will help.

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To prevent moisture, apply a hydrophobic spray (such as WD-40 Specialist Contact Cleaner) to the joints of the headphones, which will not make them waterproof, but reduce the risk of corrosion.

7. Breakdown prevention: how to prolong the life of headphones Xiaomi

Following simple rules will help avoid most of the problems:

• 🔋 Charging: Use only the original cable and power adapter. Don't leave your headphones on charge for more than 24 hours - this shortens battery life.
• 🧴 Clean: Once a month, wipe the speakers and microphone with a cotton swab dipped in alcohol. Use a soft brush (such as a toothbrush) to remove earwax).
• 🎧 Storage: Keep your headphones in your case when not in use. Avoid high temperatures (do not leave them in the sun or near the battery).
• 💦 Moisture: Do not use headphones in the rain or under the shower, even if they have protection. IPX4 (It only protects against splashes).
• 🔊 Volume: Don’t listen to music at maximum volume – this causes the speaker membrane to rupture.

For wireless models, it is also important:

• 🔄 Regularly update the firmware through Mi Earphones.
• 📱 Connect your headphones to only one device (don’t switch between your phone and PC often).

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The average life of Xiaomi headphones is 2-3 years when properly operated, and the battery starts to lose capacity after 300-500 charging cycles.

FAQ: Frequent questions about Xiaomi headphones that don't work