One Xiaomi headphone does not work: what to do if wireless headphones stop playing sound

You've turned on your favorite playlist, but instead of stereo, you hear half the composition? One of Xiaomi's headphones is silent and the other one is working like nothing happened? This problem is familiar to many owners of wireless headphones Redmi AirDots, Mi True Wireless, Xiaomi Buds and other models. The reasons can be either software (sync failure, firmware error) or hardware (distormist, contact break).

In this article, we will analyze 7 working ways to return sound to a broken headphone - from simple (reboot, reset settings) to complex (disassembly of the case, soldering contacts). You will also learn how to diagnose a breakdown, when to contact the service center, and when you can cope independently. QCC3040 (For example, Redmi AirDots 3 Pro, where the problem is often associated with the firmware of the Bluetooth module.

Before you start repairing, check the obvious: it may be that the earphone is simply dead or out of range of Bluetooth. If the basic manipulations did not help, read on.

1. Diagnostics of the problem: why does not work one earphone

The first step is to determine whether the malfunction is software or hardware, and here are the key signs to look out for:

• 🔊 The sound disappears periodically (it appears, then disappears) - most likely, the problem in the contacts of the charging case or poor synchronization of headphones between themselves.
• 🔋 The headphone is not charged (the indicator does not burn) - a break in the wire inside the case or failure of the battery is possible.
• 📱 Phone doesn't see one headphone in Bluetooth device list - firmware failure or Bluetooth module damage.
• 🔇 There is a sound, but very quiet or with distortions - problems with the speaker are likely (moisture ingestion, mechanical damage).

If Xiaomi's headphone doesn't respond to button presses, doesn't make sounds when you turn on/off, and isn't detected by the device, it's a hardware breakdown, and otherwise you can try software recovery methods.

2. Software solutions (without disassembly)

In 60 percent of cases, the problem is solved without opening the case.

Resetting and resetting settings

The easiest way is to force the earphones to reset.

1. Place both headphones in the charging case.
2. Close the lid and wait 10 seconds.
3. Open the lid and hold the button on the case (if any) for 15-20 seconds until the indicators start flashing red and white.
4. Take out your headphones and try to connect again.

For models without a button on the case (for example, Xiaomi Buds 4 Pro) use reset via touch panels:

1. Press and hold the touchpad on both headphones for 10 seconds.


2. wait for a double beep (squeak).




3. Connect to the headphones via Bluetooth again.

Updating firmware

Outdated firmware can cause earphones to desynchronize, and update it through the official Mi Home or Xiaomi Wear app:

1. Put the headphones on the phone.
2. Open the app and go to the Devices section → [Your model] → Settings → Firmware update.
3. If a new version is available, install it.

Important! Don't interrupt the upgrade process. If the headphones run out during firmware, it could cause a complete failure.

2.3 Reset Bluetooth settings on the phone

Sometimes the problem isn't with the headphones, but with the Bluetooth cache on your smartphone.

• 📱 On Android: Go to Settings → Connected devices → Bluetooth → ⚙️ (setting) → Forget the device.
• 🍎 On iPhone: Settings → Bluetooth → ⓘ headphone → Forget this device.

Then, re-interpret the snail.

💡

If the headphones are connected, but the sound goes only one, try in the Bluetooth settings of the phone to turn off the option "High quality audio" (AAC/aptX). Sometimes codec causes conflicts.

3. Cleaning contacts and checking the charging case

One of the most common causes of a broken earpiece is oxidation or contamination of contacts in the case or on the headphones themselves, and dust, sweat, moisture over time form a coating that prevents charging and synchronization.

3.1 How to Clean Contacts

You'll need:

• 🧴 Cotton swabs (preferably wooden, without plastic rods).
• 💧 Alcohol (isopropyl 90% or medical).
• 🔍 Lupa (optional, for accuracy).

Instructions:

1. Soak the cotton swab in alcohol and gently wipe the contacts on the headphone and in the case.
2. Let dry for 5-10 minutes (you can use a dryer in cold air).
3. Check if the headphone has started charging (the indicator should burn red).

If the contacts are highly oxidized (green or black), use an eraser for mechanical cleaning, and then wipe with alcohol.

Case-testing for operational performance

Sometimes the problem isn't the headphone, it's the charger case.

Attention! If the case is swelling or makes extraneous sounds (hisping, crackling), don't use it. It's a sign of a faulty battery that might ignite.

4. Hardware breakdowns: when you need disassembly

If the software methods didn't work, the problem is probably hardware, and let's look at the typical hardware malfunctions and how to fix them.

Breaking of the wire inside the headphone

Frequent breakdown after falling or bending cable (in neck strap models, such as Xiaomi Mi Neckband)

• 🔊 The sound appears at a certain position of the wire.
• 🎧 One earphone only works if you pull the cable.

The repairs will require:

• 🔧 Stolen iron (power 20-30 W).
• 🧲 Solder and flux.
• 🔍 Microscope or magnifying glass (optional).

Instructions:

1. Carefully open the headphone case (usually it is on latches or glue).
2. Find the cliff site (most often at the base of the speaker or connector).
3. Clean and solder the wires, insulate with thermal shrinkage.

Dynamic malfunction

If the headphone is turned on, connected, but does not emit a sound, it is possible:

• 💦 Moisture intrusion (corrosion of the membrane).
• 🔊 Mechanical damage to the speaker (membrane rupture).
• 🔌 Disconnecting contacts from payment.

For diagnosis:

1. Take the earpiece apart and examine the speaker for damage.
2. Call the multimeter contacts speaker (resistance should be 16-32 ohms).
3. If the membrane is torn, the speaker must be replaced.

Attention! The speakers in Xiaomi headphones are often glued to the body. When disassembling, use a plastic mediator to avoid damaging the membrane.

Battery problems

If the headphone does not hold a charge or discharges quickly:

• 🔋 Bloated battery – requires immediate replacement.
• 📉 Fast discharge - possible wear of the battery (capacity below 60% of the nominal value).

For battery replacement:

1. Buy a similar battery (for example, a Redmi AirDots 2 battery is suitable). 3.7V 40mAh).
2. Seal off the old battery, solder a new one, observing polarity.
3. Check the work after assembly.

5. Features of repair of popular models

The design and typical breakdowns vary depending on the model, and let’s look at the nuances for Xiaomi’s most common headphones.

For models with active noise cancellation (ANC), For example, Xiaomi FlipBuds Pro, additional problems may be associated with the use of the:

• 🔇 Microphone malfunction ANC.
• 🔊 Failure of the noise reduction chip.

In such cases, you can not do without specialized equipment.

6. When to contact the service center

Not all breakdowns can be repaired by yourself.

• 🛠️ The earphone is physically damaged (cracks, dents, traces of oxidation inside).
• 🔥 After disassembly, you found burned elements on the board.
• 🔄 All software methods have been tried, but the headphone is not determined by devices.
• 💰 The cost of repair does not exceed 50% of the price of new headphones (otherwise it is more profitable to buy new ones).

Official Xiaomi service centers in Russia:

• 📍 Moscow: Lysa Chaykina St., 1 (in the shopping center "Gorbushkin Dvor").
• 📍 St. Petersburg: Marshal Govorov str., 35 (in the shopping center "Okhta Mall").
• 📍 Regions: Addresses can be specified on the website mi.com/ru/service/location.

Attention, before you visit the service:

1. Take a photo. IMEI (on the box or in the headphone settings).
2. Check if the warranty card is saved (the warranty on Xiaomi headphones is usually 12 months).
3. If the headphones hit the water, don’t hide it – traces of corrosion will still be visible, and lying will void the warranty.

7. Prevention: how to prolong the life of headphones

To avoid repeated breakdowns, follow these recommendations:

• 🚫 Do not store headphones in wet places (bathroom, kitchen near the bucket).
• 🔌 Charge the case with the original cable (cheap cables can damage the charging controller).
• 🧴 Clean your headphones 1 time a month with a cotton swab with alcohol.
• 📦 Store in a case – this protects against dust and mechanical damage.
• 🔊 Do not turn on the maximum volume – this reduces the life of the speakers.

For touch-controlled models (Xiaomi Buds 4, Redmi AirDots 3 Pro) avoid:

• 👆 Pressing with dirty or wet fingers.
• 💥 Strong impacts on the body (touch panel can move away from the board).

💡

Regular cleaning of contacts and careful handling prolong the life of headphones 2-3 times, most of the breakdowns occur due to moisture and mechanical damage.

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