Xiaomi's wireless headphones are some of the most popular on the market, thanks to a combination of price, sound quality and functionality. But even proven models like the Redmi AirDots, Mi True Wireless Earphones or Xiaomi Buds 3 sometimes have a typical problem: one headphone (usually the left one) stops working. This can manifest itself in different ways: complete silence, intermittent sound, inability to connect or constant shutdowns.
Before you bring a device to a service center or buy new headphones, you should try 7 proven recovery methods that work 80% of the time. It's important to understand that the algorithm of actions depends on the symptoms: for example, if the earphone does not turn on at all, this is one problem, and if it connects, but does not play sound, another. We will analyze all the scenarios, including the rare cases when the earphone is not the fault, but the smartphone or firmware.
In this article you will find:
- 🔍 Diagnosis of the problem - how to determine what exactly is the matter (earphone, case, phone).
- 🛠️ Step-by-step instructions for resetting, flashing and mechanical cleaning.
- 📱 Smartphone settings that can block the work of the headphone.
- 💰 Cost of repair in the service and when to use it.
1.Diagnostics: Why the left earphone is not working
The first step is to identify the source of the problem, and people often blame the earbud, even though the smartphone, the charging case, or even the app is to blame.
- 📵 Check your phone connection: turn off your headphones in your Bluetooth settings, then reconnect. Sometimes a simple phone reboot helps.
- 🔋 Case and headphone charge: Put both earphones in the case for 10-15 minutes. If the indicator on the case is not burning, the problem may be the charging connector or the battery.
- 🔊 Test on another device: try connecting your headphones to another smartphone, tablet or PC. If the left earphone is working, your phone is a problem.
- 🎧 Checking physical damage: inspect the headphone for moisture, dirt in the speaker or microphone, cracks in the body.
If the headphone connects to the phone but there is no sound, it is likely that the problem is in the settings of the sound balance (more on this below) or in the damage to the speaker. If the headphone is not detected at all, the Bluetooth module or firmware is to blame.
Pay attention to the indicators on the headphones:
- 🟢 Green flashing - headphone in pairing mode.
- 🔴 Red constant - low charge.
- 🟡 Yellow/orange: connection error or firmware failure.
What to do if the indicator does not burn at all?
2.Reset Xiaomi headphones to factory settings
Reset is the first method worth trying, which clears all pairing settings and returns the headphones to a "out of the box" state, and is suitable for most Xiaomi, Redmi and Haylou models.
For discharge:
- Place both headphones in the case and close the lid.
- Pull them out and hold the buttons on both headphones for 10-15 seconds (usually touchpads or physical buttons).
- The indicators should flash red, then white/blue – this is a signal of a successful reset.
- Reconnect the headphones to the phone via Bluetooth.
If the buttons don’t respond, try an alternative method:
1. Leave the headphones in the case with the lid open.
2 Press and hold the button on the case (if any) for 10 seconds.
3. wait for the indicator reset (blinking red + white).Make sure your headphones are at least 30% charged | Disconnect them from all devices in Bluetooth settings | Check that there are no foreign objects (dust, debris) | Prepare a second device for the test after reset-->
⚠️ Warning: After resetting, the headphones may lose touch with the Mi Earphones app (if you used it), you'll have to reconfigure your gestures and equalizer.
3. Smartphone settings: balance of sound and Bluetooth
Sometimes the problem is not the headphones, but the phone settings, especially if the left earphone is plugged in, but the sound is only going to the right.
Check these parameters:
- 🔊 Sound balance (on Android): Open Settings → Special facilities → Hearing settings. Find the left/right headphone balance slider. Make sure it's in the middle (if it's shifted to the right, the left earphone will be silent).
- 📱 Monosound mode: in the same hearing settings, turn off the Monosound option (it duplicates the sound only in one earphone).
- 🔄 Bluetooth Codecs: In Bluetooth settings, click on the icon ⚙️ Select the audio codec and try changing it from the headphones. SBC on AAC (vice versa).
On iPhone, the sound balance is adjusted in Settings → Universal Access → Audiovisual Content → Balance.
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If the codecs change, you get a bit of a slurring sound, you get the settings back, and AAC and aptX are better quality, but they can conflict with cheap headphones.
| Problem. | Possible cause | Decision |
|---|---|---|
| The left earphone is connected, but there is no sound. | The phone's sound balance is off. | Reset the balance in hearing settings |
| The headphone shuts down in 5-10 seconds. | Bluetooth Codec Conflict | Change the codec to SBC |
| The indicator flashes yellow. | Headphone firmware failure | Resetting or flashing |
| The headphone doesn't charge in the case. | Oxidation of contacts or battery damage | Cleaning contacts with alcohol or replacing the battery |
4. Contact cleansing and dynamics: if the earphone is contaminated
Dust, sweat, earwax and moisture are the main enemies of wireless headphones. If the left earphone wheezes, works quietly or is silent at all, the cause may be clogged speakers or oxidized contacts.
You'll need to clean:
- 🧴 Cotton swabs (better with a plastic rod).
- 💧 Isopropyl alcohol (70% or higher).
- 🧲 Soft brush (for example, for makeup).
- 🔦 Lights for inspection.