One Xiaomi Redmi headphone does not work: full instructions for repairing wireless headphones

Xiaomi Redmi wireless headphones are a popular solution for music lovers and active users, but even they are not immune to breakdowns. One of the most common problems is that one earphone stopped working — does not connect, does not make sound or periodically turns off. The causes can be due to software failures and hardware malfunctions. In this article, we will analyze all possible scenarios from the banal discharge of the battery to damage to the board, and give step-by-step instructions for diagnosis and repair.

It is important to understand that Xiaomi wireless headphones (whether it is Redmi AirDots, Buds) 3/4 Pro or other models built on Bluetooth technology 5.0+ protocol-enabled AAC/SBC. This means that connectivity or sound problems are often associated with synchronization between headphones or a source device. Before you carry your gadget to a service center, try to identify the cause for your own. 80% In some cases, it can be eliminated without specialists.

If you’re faced with a left or right Xiaomi Redmi headphone not working, start with simple steps: check the charge, restart the device, reset the settings. Next, we’ll take a detailed look at each method, including hidden firmware features and tips for disassembling the case (if necessary).

1.Primary Diagnosis: Why One Headphone Doesn't Work

Before you start repairing, you need to determine whether the problem is hardware (physical breakdown) or software (firmware failure, Bluetooth settings).

• 🔋 Are both earbuds charged? Check the indicators on the case or in the Mi app Home/Xiaomi Often one earphone discharges faster due to a faulty battery.
• 🎧 Does the broken earphone connect separately? Try pairing it to your phone manually (more on this below).
• 📱 Is it just one device? Connect your headphones to another smartphone/PC — if the problem persists, the headphones are to blame.
• 🔊 Is there sound in mono mode? Turn on the phone to Mono Audio mode in the accessibility settings.

Critical: If the headphone does not respond to charging at all (the indicator does not burn) and is not determined by the system, there is a 90% probability that the charging connector or the power controller is to blame, in which case disassembly will be required.

Also pay attention to the symptoms:

• 🔴 The earphone is plugged in, but there's no sound. → plume-problem.
• 🟡 The earphone flashes, but it doesn't connect. → failure of synchronization between headphones.
• 🟢 The earphone is working, but with interference → Bluetooth interference or antenna damage.

2. Software solutions (without disassembly)

60 percent of the time, it's software-based, start with the simplest methods and gradually move on to the more complex ones.

Resetting and resetting headphones

Any failure in the work of Xiaomi Redmi begin to eliminate with a forced reboot:

1. Put both earphones in the case.
2. Close the lid and wait 10 seconds.
3. Open the lid and take out the headphones - they should turn on automatically.

If this does not help, reset to factory settings:

Make sure your headphones are charged more than 30 times%|

Place both headphones in the case and close the lid.|

Press and hold the button on the case for 15-20 seconds (before the indicator flashes in red/white)|

Get your headphones out and connect them back to your phone.-->

After resetting Redmi headphones AirDots/Buds will appear in the list of Bluetooth devices as new. If one of them still does not connect, move to the next step.

Updating firmware

Xiaomi regularly releases updates for its headphones, fixing bugs with connection. You can check the relevance of the firmware through the Xiaomi Wear app (for Redmi Buds). 3/4 Pro or Mi Home (for older models).

Instructions:

1. Put the headphones on the phone.
2. Open the app and go to the Devices section → Headphones → Update of the PO.
3. If a new version is available, click Update and wait until it is completed (don’t turn off Bluetooth!).

⚠️ Note: If you interrupt the connection during the update, the headphones may stop turning on. In this case, you will need to flash through Fastboot (only for power users).

2.3. Bluetooth settings on the phone

Sometimes the problem isn't with the headphones, it's with the smartphone settings.

• 📱 Forget the device in Bluetooth settings and connect again.
• 🔄 Reboot Bluetooth module: turn off / turn on the aircraft mode or restart the phone.
• 🎵 Disable audio effects (such as Dolby Atmos or Equalizer) that may conflict with headphones.
• 🔗 Check Compatibility: Some Redmi models don’t work well with iPhones due to limitations AAC-codec.

💡

If the headphones are connected but the sound is interrupted, try turning off the "Absolute Volume" function in Settings. → System system → Developer (on Android).

3. Hardware malfunctions: what can be done independently

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

3.1 Oxidation or contamination of contacts

Contact areas on headphones and in the case become oxidized or contaminated over time, leading to poor charging and unstable operation.

1. Take a cotton swab dipped in isopropyl alcohol (at least 70%).
2. Gently wipe the contacts on the headphones and inside the case.
3. Let it dry for 5-10 minutes and try to reconnect.

If the contacts are damaged (blackened, have traces of corrosion), they can be restored with a pencil eraser (easy to rub the surface) or a special paste for contacts (sold in radio stores).

Battery problems

If one headphone is discharged in a few minutes or does not hold the charge, the battery is to blame. Xiaomi Redmi headphones use lithium-polymer batteries with a capacity of 40-60 mAh, which eventually degrade.

Check the status of the battery can be according to the following signs:

• 🔋 The headphone discharges quickly (less than 1 hour of operation).
• 🔌 Does not charge to 100% (the indicator flashes red).
• 🔥 Heated when charged or used.

Replacing a battery at home is extremely difficult due to its miniature size, but if you are willing to take the risk, follow the instructions:

Damage to speaker or plume

If the headphone is connected, but there is no sound, the following breakdowns are possible:

• 🔊 A broken plume between the board and speaker (a common problem after falls).
• 🎛️ Faulty speaker (checked by multimeter).
• 📶 Damaged Bluetooth antenna (earphone connects, but the sound is interrupted).

For diagnosis:

1. Connect the headphone to the phone and call it – if the tube hears a sound, but in the headphone is not, the problem is in the dynamics.
2. Shake the headphone - if you hear rattle, perhaps soldered off the magnet speaker.

⚠️ Warning: Home speaker repair is virtually impossible due to the microscopic size of the parts. If the diagnosis is confirmed, contact the service or consider buying a new headphone (the cost of repair can exceed 50% of the price of the device).

4. Disassembly of headphones Xiaomi Redmi: step-by-step instructions

If you decide to disassemble the headphone to clean contacts or replace parts, follow this instruction.Warning: warranty will be lost, and improper actions can bring the device down.

Tools required:

• 🔧 Plastic mediator or guitar mediator.
• 🔥 Fryer (for softening glue).
• 🧲 Tweezers and screwdrivers. T3/T4.
• 📏 Double-sided tape or glue B-7000 assemble.

Step-by-step process:

1. Heat the case: Direct the hair dryer to the earpiece seam (temperature ~60°C) for 1-2 minutes to soften the glue.
2. Partitioning: insert the mediator into the slot and gently separate the front and back panels. Start from a place near the LED.
3. Removal of the board: disconnect the speaker plume (if any) and take out the board. Be careful with the Bluetooth antenna - it is glued to the case.
4. Diagnostics: Check the integrity of the tracks, battery contacts and soldering speaker.

The assembly is done in reverse order. Use sealing. B-7000 or heat glue, but do not overdo it - the excess can get on the speaker.

💡

If you are not sure about your soldering skills, it is better to contact the service. The cost of disassembling one headphone in the workshop is from 500 to 1500 rubles (depending on the model).

Table: Frequent breakdowns and their solutions

6. When to contact the service center

Not all breakdowns can be repaired by yourself.

• 💥 The headphone is physically damaged (cracks, dents, water intrusion).
• 🔧 After disassembly, the problem did not disappear or new symptoms appeared.
• 🔋 The battery is swelling (it is dangerous!).
• 📡 The headphone is not defined by any device (even after resetting).

Official Xiaomi service centers in Russia:

• Mi Service (Moscow, St. Petersburg, Yekaterinburg, etc.) - warranty repair.
• Authorized partners (list on the website) mi.com/ru/support).

Average repair prices (2026):

• Battery replacement is 800-1500 rubles.
• Repair / replacement of the speaker - 1000-2000 rubles.
• Flashing - 500-1000 rubles.
• Replacement fee - 1500-3000 rubles. (often unprofitable).

⚠️ Warning: If the headphones are warranty (usually 12 months), don't disassemble them yourself! this will void the warranty.

7. Prevention: how to prolong the life of headphones Xiaomi Redmi

To avoid any future damage, follow these guidelines:

• 🔋 Charge correctly: Use the original cable and don’t leave your headphones on charge for more than 2-3 hours.
• 🧼 Clean regularly: remove earwax from speaker mesh with a cotton swab (no alcohol!).
• 🌡️ Avoid extreme temperatures: Do not leave your headphones in the sun or in the cold (optimum: 0-35)°C).
• 💧 Protect from moisture: even if the model has protection IPX4, Do not wash your headphones underwater.
• 📦 Store in a case: This protects against dust and mechanical damage.

Also note firmware updates — they often fix plug-in bugs. Enable auto-update in the Xiaomi Wear app.

FAQ: Frequent questions about broken headphones Xiaomi Redmi