When one of Xiaomi's headphones suddenly stops working, it can knock anyone out of their way. You take a case, open it, put it on, but you hear silence or music in only one ear. This is a common problem faced by Mi True Wireless Earbuds, Redmi Buds and Haylou. Often panic occurs prematurely, because in most cases the device is not physically broken.
The main reason is that the left and right modules are out of sync with each other. Wireless audio technologies like Bluetooth sometimes fail, especially if the gadget has been lying uncharged for a long time or was near powerful sources of interference, the system could simply forget that it should work in stereo mode, and now perceives each earphone as a separate device.
Another factor could be software failure or a banal contamination of contacts, because dust and earwax can block charging of one of the modules, which causes it to discharge faster and turn off, and before carrying the device into the service, you need to perform a number of diagnostic actions that in 90% of cases bring the gadget back to life.
Checking the charge level and contact status
The first thing to do if the right or left headphone Xiaomi is not working is to make sure it's charged. Often, one of the modules just didn't charge in the case because of poor contact. Visually, the indicator can show the presence of power, but in fact, the voltage at the terminals can be critically low.
Look carefully at the charging contacts. These are the little golden pads on the earpiece and inside the case, which often accumulate oxidation or dust that prevents current from passing, wipe them with a dry cotton swab dipped in isopropyl alcohol. Do not use water, as it can cause corrosion.
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Use a plastic toothpick to clean the recesses of charging contacts carefully so as not to damage the coating.
After cleaning, place both modules in the case and leave them for at least 30-40 minutes. Even if the indicator lights up immediately, the deep discharge of the lithium-ion battery takes time to activate. If the second earphone is silent after that, the problem may lie deeper.
Synchronization problems of TWS headsets
TWS (True Wireless Stereo) technology means that two headphones work as a single system, so if one of them loses communication with the master, the sound will disappear, which often happens if you take them out of the case at the same time or one of them switched on before the other.
Removing the out-of-synchronization requires a forced reset, and the process may vary depending on the model, but the general principle is the same: You need to “forget” the device in your smartphone’s Bluetooth settings and initiate re-pairing.
⚠️ Warning: Before reset, be sure to remove the headset profile from the list of paired devices on the phone, otherwise reconnection may not occur correctly.
The standard reset procedure for most Xiaomi and Redmi models is as follows:
- 📱 Place both headphones in the charging case.
- 🔌 Leave the case cover open.
- 👆 Press and hold the touch zones on both headphones (or the button on the case) for a period of time. 10-15 seconds.
- 💡 Indicators should flash red or white, signaling a reset.
After a successful reset, the indicators often go into fast-blink mode, waiting for the connection. Now find the device in the Bluetooth list on the phone and perform the pairing again. If the sound appeared in both channels, the problem was software.
Diagnostics through the Xiaomi Earbuds app
For a deeper diagnosis, owners of Xiaomi devices are recommended to use the official Mi Earbuds or Xiaomi Earbuds application. This software allows you to see the real charge of each module separately and check the status of the connection.
When you go into the app, you can see that one of the headphones is showing up as 0% charge, even if it's just out of the case, which is a sure sign of hardware malfunction or deep discharge, and it also allows you to update your firmware, which often fixes connection bugs.
What to do if the app does not see the headphones?
Software updates are critical. Manufacturers regularly release patches that improve connection stability. Search the Software Update section of the app menu and follow the on-screen instructions. Don't interrupt until the case and headphones are above 50%.
Mechanical damage and moisture intrusion
If software methods didn't work, it's physical. Headphones are compact, and falling from a height of human stature can damage the internal soldering or the speaker, and models without waterproofing are particularly vulnerable.
Moisture is the main enemy of electronics. Sweat during training or sudden rain can lead to oxidation of contacts inside the enclosure. Even if the case is marked IPX4, it is only spray protection, not immersion or steam protection.
| Symptoms. | Probable cause | Method of decision |
|---|---|---|
| Quiet sound or wheezing | Dynamic grid contamination | Brush and alcohol cleaning |
| The earphone is off. | Deep discharge or oxidation | Long-term charging, cleaning contacts |
| Persistent communication breaks | Interference or antenna module | Resetting settings, checking elsewhere |
| No sound after the fall | Drain failure or damage to the speaker | Disassembly and repair in the service |
If you notice that the second earphone stopped working after contact with water, try placing it in a container with silica gel for a day.
Bluetooth and smartphone settings
Sometimes the problem isn't with the headset, it's with the smartphone itself. Android and iOS operating systems may not be correctly distributing audio streams. Check the Special Opportunities settings or sound balance.
In the audio settings section, make sure that the balance slider is not completely shifted to one side, and it's also worth trying to connect to another device, a tablet, a laptop, or a friend's phone, and if it's working, your phone's software is in conflict.
Resetting network settings on a smartphone often helps to solve the problem of malfunctioning Bluetooth module.This action will remove all stored Wi-Fi passwords and pairings, but refresh the operation of the radio modules.
When repairs or replacements are needed
Unfortunately, not all situations are solved software-based: if the battery inside the headphone is swollen or lost capacity, it will hold a charge for a few minutes. Lithium batteries degrade over time, especially if the device has been lying low for a long time.
Replacement of the battery in TWS-In headphones, it's a complex process that requires soldering skills and tidy opening of the body, often without the ability to backseal. In most cases, it's more cost-effective to buy a new module or kit than to repair an old one.
☑️ Diagnostics before going to the service
If the device is under warranty, do not attempt to open it yourself. Violation of seals immediately voids the manufacturer's warranty obligations. Contact the authorized Xiaomi center for examination.
Preventing problems with TWS headphones
To extend the life of your Mi True Wireless Earbuds, follow simple rules of operation. Regularly wipe contacts in the case with dry cloth. Don't leave the headset discharged for long-term storage - it is better to keep the charge at 50-60%.
Avoid extreme temperatures. In summer, don't leave your case in the car in the sun, and in winter, don't wear headphones in the outer pockets of your jacket in the cold. The cold temporarily reduces battery capacity, and the earphone may turn off prematurely.
⚠️ Attention: Using cheap chargers with unstable current can damage the power controller inside the headphones, leading to their complete failure.
Regular cleaning of the earwax from the mesh is the key to good sound. The sulfur can be carefully removed with a soft brush. If the mesh is removable, it can be washed, but the speaker cannot be wet.
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Regular maintenance and proper charging prolong life TWS-headphone 2-3 once.
Following these guidelines will help you enjoy the quality sound for a long time, and if none of the tips worked, it may be time to upgrade to a newer model with improved protection and autonomy.