When a Xiaomi Mi True Wireless Earbuds or Redmi Buds pair stops sounding one channel, it's quite common and can knock anyone out of the rut, usually suddenly: you take the gadget out of the case, plug it into the smartphone, but the sound goes only on the left or right, and the second headphone is silent or makes quiet crackles. This does not always mean a physical break in the speaker or the battery failure.
Most of the time, the problem is software failure, channel desynchronization, or contact contamination that can be fixed on your own without going to a service center. Wireless headphones are complex microcomputers, and sometimes they need to reboot or reconnect to restore normal operation.
In this article, we will take a closer look at all the possible reasons why one Xiaomi headphone doesn’t work, and provide step-by-step instructions for restoring the functionality of your audio device.
Main causes of dissynchronization and lack of sound
The first thing to understand: modern TWS-True Wireless Stereo is paired, where one channel often acts as a master transmitter to the other, and if this connection is broken, there is a "lone" effect.
The second common cause is different levels of charge, so if one earphone was in the case longer or its contact was contaminated, it could be discharged to zero while the other one was conserving energy, in which case the device simply does not turn on.
Bluetooth interference from other devices, routers or microwave ovens can block the transmission of audio stream to one of the channels, creating the illusion of breakdown.
⚠️ Attention: If the earphone is in the water or has been hit hard, software methods may not help, and in such cases, there is a high risk of physical damage to the board or speaker.
- 🔋 Different battery levels in the left and right channel.
- 📡 Software failure of the connection between the headphones themselves (TWS Link).
- 📱 Error Bluetooth stack in the smartphone to which the device is connected.
- 🧹 Oxidation or contamination of charging contacts on the case and in the case.
Diagnostics and verification of charging contacts
Before you go to complex resets, you need to eliminate the banal lack of power. Often the user thinks that the earphone is charged when he puts it in the case, but because of the pile, dust or oxidation, the contact areas do not close.
Carefully examine the bottom of the headphones and the indentations in the charging case. Even a microscopic layer of earwax or dust can isolate the contacts. Use a cotton swab lightly soaked in isopropyl alcohol to clean the contacts, but keep fluid out of the speaker.
After cleaning, put both earbuds in the case and close the lid. The indicators should light up, signaling the start of charging. If one of them does not respond, try to press it slightly with your finger to make contact. Charging is the foundation of any electronics.
☑️ Contact and charging checks
If there is no visual contamination, but the earphone is not charging anyway, the problem could be deeper, perhaps the battery inside the earphone itself has failed, requiring a replacement of the power in the service.
Full reset (Hard Reset) headphones Xiaomi
The most effective way to fix desynchronization is to reset the headphones to factory settings, a procedure that causes the headphones to forget all previous connections and re-get to know each other. The process can be slightly different for different Xiaomi and Redmi models.
In touch-button models (such as Mi True Wireless Earbuds Basic 2), you need to pinch the touch panels on both headphones simultaneously. Hold them for about 10-15 seconds until the indicators start flashing red and white (or a different color depending on the model).
For models with physical buttons on the case case (such as Mi True Wireless Earphones 2 Pro), the algorithm is different: Put the headphones in the case, open the lid, and press the reset button on the back or inside of the case. Hold it until the indicator flashes white.
What if the reset doesn’t help the first time?
⚠️ Warning: After resetting, you will have to re-connect your headphones to your smartphone, as the old connection settings will be removed.
Fixing Connection Problems via Bluetooth
Often the root of the problem lies not in the headphones themselves, but in your smartphone’s Bluetooth cache. Android and iOS operating systems may not correctly store device profiles, leading to conflicts when transmitting sound. Deleting the device is the first step to solving it.
Go to the Bluetooth settings on your phone, find your Xiaomi Buds in the list, and click “Forget” or “Disable.” Then turn off the Bluetooth on your phone, restart the smartphone itself, and only then turn on the communication module again.
When pairing again, make sure both headphones are in the case and the cover is open (for models with auto-patch) or they are in mode (for buttons).
- 📲 Remove the headphone profile from the list of associated devices.
- 🔄 Reboot your smartphone to clean up your Bluetooth cache.
- 🔌 Perform the pairing again by following the instructions for your model.
- 🔇 Check the sound balance in the settings of the special. capabilities of the phone.
💡
If the sound appears but it is very quiet or distorted, check the Monoaudio settings or channel balance in the Special Features section of your Android smartphone.
Comparison of models: features of resetting different series
Xiaomi’s wireless acoustics lineup is extensive and its management methods vary, and understanding your model will help avoid errors when trying to “fix” your device.
| Model | Type of management | Resetting method | Indication of discharge |
|---|---|---|---|
| Mi True Wireless Earbuds Basic | Sensor/Button | 10 seconds retention | Blink 3 times |
| Redmi Buds 3 Pro | Sensor | The button on the case | White flashing |
| Mi Air 2 / 2S | Sensor | The button on the case | Orange blinking |
| Xiaomi Buds 3T | Sensor/Steam | 10 seconds retention | Red/White |
As you can see from the table, having a physical button on the case makes it much easier to do this. In models without a button (budget segment), you have to rely on precise sensor retention, which requires skill. Time is critical here: let go too early, nothing happens, hold on, the headphones go into pairing mode.
If you have a model with Mi Buds or Xiaomi Earbuds, try updating the firmware through it. Sometimes bugs are fixed software, and updating Firmware can bring back the life of a dead channel.
Physical damage and when repairs are needed
Unfortunately, not all problems are solved software-based: If the headphone has been in water (even if it has IPX4 protection), moisture could oxidize the internal contacts of the speaker or battery, in which case the sound may disappear intermittently (periodically) or disappear completely.
Mechanical damage, such as a fall from a height or a strong impact, can unstick the plume of the speaker or damage the membrane itself. If the sound appears or changes the nature of the cod when tapping on the earpiece, it is almost certainly physical contact inside the housing.
In the case of physical wear and tear, when one earphone discharges in 10 minutes and the other runs for hours, only replacing the battery will help, which is difficult to do on your own due to the miniaturization of parts and the use of glue in the assembly.
💡
If after cleaning, charging and complete reset, one headphone is still silent - a hardware malfunction is likely, requiring the intervention of specialists.