The situation when suddenly stopped working one wireless headphone Xiaomi, familiar to many owners of popular TWS-It usually happens at the most inopportune moment, whether it's a call, watching a video, or in the middle of a workout, and the left or right side of the headset just stops making sound, even though the light can keep on burning, signaling a charge. This does not necessarily mean a physical break in the speaker or battery failure.
Most of the time, the problem is that the software fails to sync between the two modules. The wireless headphones work in pairs, and if the communication between them is broken, the sound will only play on one device. Often users think that the gadget is broken, and bring it to the service, although you can restore it yourself in a few minutes by performing a series of simple reboot steps.
Before panicking or looking for a warranty card, you need to rule out the most trivial reasons. Perhaps the battery in the problem module has run out, or earwax has accumulated in the speaker grid, blocking sound. It is also worth checking the Bluetooth settings on the smartphone, as the device may have been “remembered” incorrectly. In this article, we will discuss all possible causes and ways to eliminate them.
Diagnostics: Why One Channel Is Silent
The first step should always be a thorough diagnosis. If you have one Xiaomi Redmi Buds or Mi True Wireless earphone stopped working, it is important to understand the nature of the malfunction. The sound may disappear completely, be very quiet or interrupted with a characteristic crackle. Sometimes the indicator on the problem side does not light up when removed from the case, indicating no contact with charging pins.
One of the common reasons is the out-of-synchronization. TWS-The True Wireless Stereo headphones have to work as a unit, and if the right module loses communication with the left, it can go into mono-calling mode or simply remain silent, which often happens if you didn't pull them out of the case at the same time or if one of them was removed too early.
Also, the physical condition of the device should be considered: moisture, impacts or just prolonged use without cleaning can lead to oxidation of the contacts or contamination of the speaker grid. In some cases, the problem lies in the smartphone itself, which improperly distributes the audio stream between channels.
- 🔋 Battery discharge in one of the headset modules.
- 📡 Programmatic synchronization failure between left and right channel.
- 🧹 Pollution of the sound grid with sulfur or dust, blocking the sound.
- 📱 Error in the operation of Bluetooth protocol on a smartphone.
Basic reset and cleaning contacts
The first and most effective thing you need to do is to completely reboot the device. Don't just put them in the case, which is to reset the current state. To do that, put both modules in the charging case and close the lid. Wait about 10-15 seconds, then open the lid. If the indicators don't catch fire, wipe the contacts.
The contacts often form oxide film or plaque, which prevents charging and normal operation. Take a dry lilaless fabric or cotton swab slightly soaked in alcohol, and gently wipe the golden contacts on the headphones themselves and inside the case. Make sure they are dry before putting them back in.
⚠️ Warning: Never use metal objects (needles, paper clips) to clean contacts inside the case, which can short-circuit and cause the charger to break permanently.
After cleaning, leave the headset in the case on charge for at least 30 minutes. Even if the indicator is on, a deep discharge could "sleep" the power controller. Prolonged charging will help "swing" the battery and start the system again. If after that one earphone still does not work, move to the next step.
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Use a soft bristling toothbrush to clean the speaker mesh carefully, but do so only on the device turned off and without pressing hard.
Full reset (Hard Reset)
If a simple reboot doesn't work, you need to do Hard Reset, which forcefully resets the headset to the factory and repairs the left and right channels together, and it solves 90 percent of the software problems with desynchronization.
The reset procedure can vary depending on the model. For most Xiaomi and Redmi models, the algorithm is: place the headphones in the case, leave the lid open. Find the function button on the case (usually one). Press and hold it for 10-15 seconds until the indicator flashes white or red (depending on the model).
Reset instructions for models without a button on the case:
1. Remove the device from the Bluetooth smartphone.
2. Remove both earphones from the case.
3. simultaneously touch the touch areas on both headphones 5 times quickly.
4. Wait for the lights to flash.After a successful reset, the indicators should light up, signaling readiness to (mating), now you need to reconnect them to the phone. Find the device in the Bluetooth list, click "Forget device" or "Delete", and then search again.
☑️ Complete reset algorithm
Smartphone settings and Mi Earbuds apps
Sometimes the problem isn't with the headset, but with the Android or iOS settings. Check the sound balance. In some MIUI shells or third-party launchers, you can accidentally shift the balance completely to one channel. Go to the special features settings and check the left-right-channel balance slider.
Xiaomi and Redmi device owners are particularly interested in the official Mi Earbuds app (or Xiaomi Earbuds), which not only tracks the charge, but also updates the firmware of the headphones, and often manufacturers release updates that correct connection errors.
You can also check touch control in the app, and one of the headphones may have a sensor calibration that's not responsive to touch, which makes it seem like it's not working. Try reassigning functions or resetting the control settings in the app.
| Model | Reset indicator | Retention time | Annex |
|---|---|---|---|
| Mi True Wireless 2 | White flashing | 10-15 sec. | Mi Earbuds |
| Redmi Buds 3 | Orange blinking | Up to 30 seconds. | Xiaomi Earbuds |
| AirDots Basic | Double blinking. | 5-7 seconds | Not required |
| FlipBuds Pro | Pulse. | 10 seconds. | Xiaomi Earbuds |
What to do if there is no button on the case?
Physical malfunctions and cleaning of speakers
If the software methods don't work, there's a high probability of a physical problem, the most common of them is contamination of the speaker's mesh, earwax, when it gets inside, hardens and tightly blocks the access of the sound wave, visually the mesh may seem clean, but the micro holes are clogged.
To clean, use a soft toothbrush or a special sticky tape (blu-tack). Carefully walk along the grid to remove contaminants. You can use isopropyl alcohol, but you need to apply it on the brush, not splash it on the earpiece. The moisture inside the speaker will cause corrosion of the membrane.
Another major problem is that the battery in one of the modules is dead, and if one earphone is discharged at times faster than the other, or stops working after 10 minutes, then its battery has degraded. TWS-Replacing a battery is technically difficult and often economically inexpedient.
⚠️ Attention: If the earphone fell into the water or hit hard, a self-opening can finally finish the device.
When a visit to the service center is required
There are times when you can't get your hands on it, and if you completely reset, clean and reconnect to different devices (try connecting to another phone), one channel is silent, which is a sign of a hardware breakdown, it could be a plume break, a Bluetooth module fails, or a speaker.
If the device is less than a year old and there are no signs of mechanical damage (scratches, dents, traces of moisture), safely carry it under warranty. Xiaomi usually changes faulty ones. TWS-Headphones for new ones, as their repair is unprofitable.
If the warranty is over, estimate the cost of repairs. Often the cost of a service recovery is 70-80% of the cost of a new headset, in which case it is easier to buy a new model, especially since technology has stepped forward, and new versions can offer better noise emitting and autonomy.
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If neither resetting, nor cleaning, nor reconnecting to other gadgets helped - the problem is hardware, and a replacement device or professional repair is required.