Why Xiaomi’s right-hand earphone doesn’t work: full diagnostics and repairs

The problem with one broken headphone in Xiaomi wireless headsets is one of the most common complaints users. According to service centers, up to 40% of calls on the gadget Mi True Wireless Earbuds, Redmi Buds or Xiaomi AirDots are associated with the failure of the right module, and the fault can be both banal settings of the smartphone and serious hardware malfunctions. In this article, we will analyze all possible causes, from software failures to physical damage, and give step-by-step instructions for restoring the functionality.

It's important to understand that the symptoms of right-hand earphone silence can vary from no sound to periodic communication interruptions or distortions. Some users experience the earphone plugging in but not playing audio, others experience it not being detected at all by the system, and we'll look at each scenario separately so you can accurately identify the problem and choose the best way to fix it.

Before carrying the headset to the service center (where repairs can cost you) 30-70% If you're looking at the cost of new headphones, try to diagnose the malfunction yourself. 5-15 So let's start with the simplest and most obvious reasons, and gradually move on to the more complex ones.

1. Check basic settings and connections

The first thing you need to do is make sure that the problem is not in the settings of your smartphone or tablet. Often users accidentally change the parameters of the sound without even knowing it. Start by checking the stereo balance: in some firmware MIUI Android or it may get lost after updates.

Open the Settings. → Sound. → Stereo balance (or settings) → Special facilities → Sound settings depending on the version MIUI). Make sure that the slider is in the middle, and if it's shifted to the left, the right earpiece will make the sound quieter or silent.

Also check if the mono sound mode is activated (sometimes switched on accidentally through gestures or voice commands).

• 🔊 Go to Settings. → Special facilities → Hear and disable the option "Monoaudio".
• 📱 On some Xiaomi models (such as the Mi 11 or Redmi Note 10), this option may be hidden in Settings. → Additionally. → Developer settings.
• 🎧 If you use a headset with an app (such as Mi Earphones), open it and reset the sound settings to the factory.

A critical mistake many users make is to try to reconnect the headphones through the Bluetooth menu without removing them from the list of devices first, which leads to profile conflict and exacerbates the problem. If the right earphone doesn't work, forget the device in the Bluetooth settings first, then complete the sync again.

2. Resetting headphones to factory settings

If the basic settings didn't work, the next step is to reset the headset hardware, which cleans all the stored connection profiles and returns the headphones to their original state, and the instructions vary depending on the model, but the general principle is the same.

For most people. Xiaomi/Redmi Buds algorithm is like this:

1. Place both headphones in the case and close the lid.
2. Press and hold the button on the case (usually located behind or below) for 10-15 seconds until the indicator flashes red and white.
3. Open the case cover - the headphones will automatically go into pairing mode.
4. Connect them to your smartphone as a new device.

For touch-controlled models (e.g. Xiaomi AirDots 3 Pro):

• 🔄 Touch the touchpad on both headphones simultaneously for 10 seconds until you hear the reset beep.
• 📲 After the reset, the headphones will appear in the list of available Bluetooth devices as "Mi True Wireless...".

Important! After reset, you may need to update the headphone firmware through the official Mi Home or Xiaomi Earphones app. Without the update, you may have problems syncing the right and left modules.

Make sure the headphones are charged (>30%).

Close all applications that use Bluetooth.

Remove the headset from the list of associated devices.

Prepare a second phone for testing (optional).-->

3. Problems with charging and battery of the right earphone

One of the most common reasons for the right earphone to be silent is because it's running out of battery or has a problem with charging contacts, because in the case, each earphone is charged separately, and if the right earpiece isn't getting power, it may not turn on.

How to diagnose:

• 🔋 Look at the charging indicators in the case: if only one LED (left) is lit when connecting the power, then the right earphone is not charged.
• 🔍 Look at the contacts on your earphone and in your case: they should be clean, free of oxidation or contamination.
• ⚡ Try charging the case from another cable/power supply – sometimes the problem lies in a faulty adapter.

If the headphone does not charge even after cleaning the contacts, the reason may be:

Battery wear (typical for headphones older than 2 years).

Damage to the power controller (requires repair).

- A rupture of the plume inside the earpiece (often after falls).

⚠️ Warning: Do not use abrasive materials (paper sandpaper, metal objects) to clean your contacts, this will cause further damage.

You can use the AccuBattery app to check the battery status (if the headphones support the display of the charge level of each module separately). If the capacity of the right earphone has dropped below 60% of the nominal one, it is time to change it.

4. Software failures and firmware updates

Xiaomi's headphone firmware is their "operating system" that controls synchronization, sound and connectivity. If the firmware is damaged or outdated, the right earphone may not work properly. ANC (Active noise reduction, where software bugs are more common.

How to update firmware:

1. Install the official app: - For most models: Mi Home (available on Google Play and App Store). - For Redmi Buds 3 Pro and newer: Xiaomi Earphones.
2. Connect the headphones to the smartphone via Bluetooth.
3. Open the app, find your model in the list of devices and check for updates in the “Firmware” section.
4. If the update is available, follow the instructions on the screen. Don't turn off the headphones during the process!

If the update doesn’t help or the app doesn’t see the headphones:

• 📱 Try connecting the headset to another smartphone (preferably on iOS if you have Android, and vice versa).
• 🔄 Reset your headphones (see Section 2) and try again to update.
• 💻 On some models (for example, Mi True Wireless Earbuds 2), you can update the firmware via PC using the Mi Flash Tool utility, but this requires skills.

⚠️ Warning: Do not install firmware from unverified sources! This can cause the headset to become completely unusable.

Physical damage and repair

If all software methods have been tried, but the right earbud still doesn't work, it's probably a hardware problem.

Self-repairing Xiaomi headphones is possible, but requires precision and minimal soldering skills. e.g., changing the speaker in Redmi Buds 3 near 30-40 minutes with tools available:

• 🔧 You will need: soldering iron, solder, tweezers, plastic mediators for opening the body.
• 📦 Speakers and plumes can be ordered on AliExpress (cost - from 200 rubles.).
• 🎥 We recommend watching the disassembly on YouTube for your model (for example, search on request "Redmi Buds 3 disassembly").

When disassembling Xiaomi headphones, be careful with:

- Battery locker tape (it is easy to break).

Microphone module (thin wires are often detached).

- Control buttons (attached to glue, with a careless opening can fall off).

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Before disassembling, take a picture of each step on your phone, which will help you put the earpiece back together correctly, especially remembering the location of the sealing gums and the direction of the plumes.

6. Case and synchronization problems

Xiaomi's headphone case is not just a storage case, it's a charging and synchronizing device. If the case is faulty, the right earphone may not be switched on or connected to the left.

• 🔌 Failure of charging contacts in the nests of the case (right earphone is not charged and is not synchronized).
• 📡 Bluetooth controller failure in case (earphones can’t see each other).
• 🔋 Case battery discharge (if the indicator does not burn when connected to charging).

How to check the case:

1. Connect the case to the charger and observe the indicator: it should burn red (charging) or green (full charge). USB-C power-controller.
2. Try connecting the case to another cable/power supply, sometimes a faulty adapter is the fault.
3. If the case is charged, but the headphones are not synchronized, reset the case: hold the pairing button 20-30 seconds before flashing the indicator purple.

If the case does not respond to charging or buttons, it will have to be repaired or replaced. the cost of repairing the case controller is from 1000 rubles., battery replacement is from 800 rubles. In some cases it is cheaper to buy a new case (for example, for Redmi Buds 3 it costs about 1500 rubles.).

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If the headphones are still out of sync after the case is reset, the problem may be the controller's firmware, in which case only flashing through ST-Link or replacing the case board will help.

7. Compatible with Bluetooth devices and codec

Sometimes the right-hand Xiaomi headphone doesn't work because of incompatibility with the sound source. For example, some Samsung or iPhone smartphones may conflict with the codec. AAC Or aptX, which is used by headphones, and as a result, one of the modules (most often the right one) can turn off or play back a latency sound.

How to check:

• 📱 Connect your headphones to another device (e.g. Xiaomi if you tested on your iPhone).
• 🔊 In Bluetooth settings on Android, open the connected device and see which codec is used — SBC or AAC.
• 🎵 If the sound is only in mono mode, try manually switching the codec to the Developer Settings (optional "Bluetooth Codec").

Problems can also arise when connecting to:

Older versions of Android (below 8.0) – no dual audio support

Devices with custom firmware (for example, LineageOS) – there may be bugs in the Bluetooth stack.

- Laptops/PCs – some Bluetooth adapters do not support a profile HFP 1.7 required for stereo sound.

⚠️ Note: Xiaomi headphones are optimized for working with devices on MIUI. When connecting to iOS, there may be audio delays or communication interruptions. For iPhone, it is recommended to disable the option “High-quality audio” in Bluetooth settings.

8.When to contact the service center

If all of the above methods have not worked, most likely, the problem requires professional intervention.

• 🔧 The earphone is physically damaged (cracks, dents, traces of oxidation inside).
• 🔋 After battery replacement or repair, the sound did not recover.
• 📡 Headphones are not defined by any device, even after resetting.
• 💦 There was moisture (earphone "crunchy" or not included).

The cost of repairs in official Xiaomi services (for 2026):

Diagnosis: free of charge (if repairs are carried out in the same center).

Replacement of the speaker: 1200-1800 rubles. (depending on the model).

Repair of the plume / contacts: 800-1500 rubles.

Replacement of the battery: 600-1200 rubles.

- Flashing of the controller: 500-1000 rubles.

Before you go to the service,

Check if the center works with your headphone model (some services do not take on repairs Redmi Buds older than 2 years).

Ask about original spare parts (in informal workshops, low-quality counterparts are often used).

If headphones are warranty, do not open them yourself - this will cancel the warranty obligations.

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Official Xiaomi service centers in Russia can be found on the website mi.com/ru/service/location. Before visiting, check by phone whether they are engaged in headphone repair (some centers specialize only in smartphones).

FAQ: Frequent questions about Xiaomi's broken right earphone