The situation when one headphone Xiaomi suddenly stops working, familiar to many owners of budget and flagship audio equipment. This can happen at the most inopportune moment: during a run, in a crowded subway or on an important call.
You should not panic in this case, because in 90% of cases the problem lies not in the physical damage to the speaker, but in the software synchronization failure. Wireless devices based on Bluetooth protocol often lose communication with each other, especially if they have been in the case for a long time without charging or one of the modules has discharged more than the other. You can restore the performance yourself by performing a series of consecutive actions.
In this article, we will look at all the possible reasons why one wireless headphone does not work, and provide step-by-step instructions for eliminating them. We will look at methods from a simple restart to deep resetting and working with the engineering menu.
The main reasons for the desynchronization of Bluetooth headset
Before we get into action, we need to understand the nature of the malfunction, and most often, the problem is that the right and left modules stop seeing each other, turning into two independent devices, and the smartphone can only connect to one of them, ignoring the other.
One of the most common causes is battery discharge in one of your ears, and if you haven't used a headset in a long time, one module could be zero faster than another because of natural self-discharge or differences in power controllers, and in this state, the device may be on, but it doesn't have the power to maintain a Bluetooth connection.
Software conflicts should also be considered: Updating the operating system on a smartphone (for example, switching to a new version of Android or MIUI) sometimes leads to incorrect operation of old pairing profiles. The accumulated cache of Bluetooth services may contain errors that prevent proper channel switching.
Physical factors can't be discounted either: Moisture, sulfur or dust on the charging contacts in the case can prevent one of the modules from charging normally, visually it may be invisible, but the electrical contact will be disrupted, causing the problem side to be permanently discharged.
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Regularly wipe the charging contacts on the headphones themselves and inside the case with an alcohol napkin - this will prevent 80% of charging problems.
Basic diagnosis and primary reset
The first step in troubleshooting is simple diagnostics, so you don't have to take the device apart or bring it into service right away. Start by checking the basics: make sure that both modules are lighted up as they're removed from the case. If one of them is silent, put it back and make sure that the charging process is underway.
If the lights are on but there is no sound, try a basic reset. For most Xiaomi models (AirDots, Redmi Buds, Mi True Wireless), the procedure looks similar. You need to place both headphones in the charge case, open the lid, and press the touch pads (or physical buttons) on both modules at the same time.
Hold the buttons for 10-15 seconds. The indicators should start flashing red and white (or another color depending on the model), signaling a reset. Then remove them and try to reconnect.
- 🔋 Check the charge level of the case and the modules themselves through the widget on the smartphone screen.
- 📱 Remove the device from the Bluetooth list on your phone ("Forget the device»).
- 🔄 Reboot the smartphone itself to clear temporary Bluetooth stack files.
In this case, they're going to be looking for the phone, not each other, and to avoid that, don't connect them to the phone right away. 5-10 lay outside the case next to each other so they can create TWS-The pair (True Wireless Stereo) are each other.
☑️ Primary reset algorithm
Full reset procedure for different models
If the soft restart didn't work, you need to reset the settings to factory settings, which erases all the saved profiles and forces the microcontrollers to reset, and the technique may vary slightly depending on the series of devices.
For the popular Redmi AirDots and Mi True Wireless Earbuds Basic series models, triple-on is often used. While the headphones are in the case (or out of it, depending on the revision), you need to quickly press 5 times on the touch areas. Indicators should blink three times, which will confirm a successful reset.
More advanced models, such as the Xiaomi Buds 3 or Redmi Buds 4 Pro, often require the use of a charging case. Put the headphones in the case, open the lid, but do not remove them. Find a functional button on the case case case (usually round, between the indicators). Press and hold it for about 20 seconds until the indicator on the case flashes orange or white.
⚠️ During the reset procedure, do not bring your headphones close to a working microwave or powerful sources of radio interference.
Once you've done Hard Reset, you need to re-mating the pairing procedure, take both of the headphones out of the case at the same time, wait for one of them (usually the right one) to blink fast, and the other to blink slowly or not at all, which means they've found each other, and now you can search for the device in the phone settings.
What if the reset didn't help?
Setup via Mi Home and Xiaomi Earbuds
Many users ignore specialized software, but it is in vain. Official applications Xiaomi Earbuds or Mi Home allow you to manage firmware (firmware) headphones. Often it happens that one headphone runs on the old version of the microcode, and the second, updated, stops interacting with it correctly.
To start, download the app from Google Play or the App Store. Connect your working headphone to your smartphone. Go to your device settings in the app and check for updates. If the update is available, install it by putting both headphones in your case and connecting the case to charge (some models require a current connection).
The app also has a control and equalizer setup feature, and sometimes the problem of a broken earphone is solved by simply calibrating the sound, go to the Sound Effects or Equator section and reset the settings to Default, which will eliminate the software conflicts of audio codecs.
| Model headphones | Type of discharge | Indication of success | Annex |
|---|---|---|---|
| Redmi AirDots 2 | 5 taps on the sensor | Triple flashing. | Xiaomi Earbuds |
| Mi True Wireless 2 | The button on the case (20 seconds) | Blinking white | Mi Home |
| Xiaomi Buds 3T | Hold the sensors down (10 seconds) | red-and-white flashing | Xiaomi Earbuds |
| Haylou GT1 Pro | 4 taps on the sensor | Double blinking. | Haylou |
Use the app to check the charge of each module individually. Sometimes the interface shows the total charge, but the detailing on each ear can reveal that one of them holds a charge for only 2 minutes, which causes it to turn off.
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Updating your firmware through an official app is the most effective way to fix synchronization software errors that cannot be fixed by simply reconnecting.
Problems with charging and physical contact
Often the phrase "one earphone doesn't work" means it just doesn't charge. TWS-Headsets are faced with the fact that one module discharges faster or does not charge at all, the reason lies in the design: charging is through magnetic contacts (pogo pins) or induction.
If you have a model with contacts, carefully examine the golden areas, which may form an oxide layer, sweat or cosmetics, and clean carefully using a dry cotton swab or a stick slightly moistened with isopropyl alcohol.
In induction-charged models (without visible contacts), the problem may be the displacement of the coil inside the case or a foreign object (metal shavings, accumulated dust) between the earpiece and the case. Try to gently move the earpiece in the case nest - if the indicator catches fire, then the contact has been broken.
- 🧹 Wipe the contacts on headphones and in the case with a dry soft cloth.
- 🔌 Check the charging cable and power supply - they may be lacking in current.
- 🌡️ Make sure the ambient temperature is not lower. +10°C (lithium stops charging in the cold).
It's also worth checking the case itself. If it's discharged to zero, it won't be able to charge the headphones even if it's connected to the network. Leave the case with the headphones inserted on charge for at least 1-2 hours without intervention.
⚠️ Attention! Don't use metal objects (needles, paper clips) to clean contacts. You can close contacts inside the case and knock the electronics out of action forever.
Hardware malfunctions and when to go to the service
If all software methods are exhausted, the indicators do not light up even after a long charge, and resets do not help, most likely there is a hardware breakdown. Xiaomi wireless headphones most often fail batteries, they have a small capacity and eventually degrade, especially if the device has been long dead.
Another common problem is the drift of the speaker plume or microphone inside the case, which often happens after falls. The earphone may turn on (the diode lights), but there will be no sound because the signal does not reach the speaker.
Xiaomi's low-end models often have a nominal moisture protection (IPX4). Getting a lot of moisture or sweat can lead to corrosion of the board. If the headphone has been in water, you can't dry it with a hair dryer - hot air will drive moisture deeper. You need to put the device in a bag of silica gel or rice for 24-48 hours.
The repairability of these devices is extremely low, they're glue-based, and it's almost impossible to open the door without damaging the body, so if the warranty period has expired, it's often cheaper to buy a new model than to try to replace the battery in the service.