One Xiaomi headphone does not work: full instructions for diagnosis and repair

Xiaomi wireless headphones are a popular solution for music lovers and active users, but even they are not immune to breakdowns. One of the most common problems is that one headphone stopped working, left or right. The reasons can vary from a trivial battery discharge to hardware damage. In this article, we will analyze all possible scenarios for why one Xiaomi earphone does not turn on, does not connect or does not play sound, and give step-by-step instructions for troubleshooting.

It is important to understand that the algorithm of actions depends on the model of headphones (for example, Redmi AirDots, Mi True Wireless Earphones, Xiaomi Buds 4, etc.), as well as on the symptoms: whether the earphone is completely silent, whether the indicator flashes, whether it is determined in the list of Bluetooth devices. We have collected proven methods – from simple (reboot, reset) to complex (disassembly, soldering contacts). If you are not sure of your abilities, some steps are better to trust the service center.

1. Diagnostics problem: why one Xiaomi headphone doesn't work

Before you start repairing, you need to determine exactly what is going on, and here are the key questions that will help narrow down the possible causes:

• 🔋 Is the headphone charged? Check if the light on the case is on when you connect to the charging case.
• 📶 Is the headphone detectable in Bluetooth? If so, the problem could be the sound settings or the firmware. If not, there could be a hardware malfunction.
• 🔊 Is there a sound in the other headphone? If both are silent, the problem is at the source (phone, PC). If only one is to blame for the earphone itself or its connection.
• 💥 Were there any physical injuries? Falls, moisture, severe blows often lead to contact breaks.

Pay attention to the headphone indicators:

• 🟢 Green/blue flashing – headphone in search mode.
• 🔴 Red – discharged or connection error.
• 🟡 Yellow/orange: low charge or synchronization problem.
• ⚪ White – the headphone is connected, but the sound may not be due to software settings.

If the indicator doesn’t burn at all, it could indicate a power failure or battery damage – one of the most difficult breakdowns requiring soldering or replacement of elements.

2. Software solutions (without disassembly)

In 70 percent of cases, the problem is solved without opening the headphones.

Resetting and resetting settings

The simplest method is forced reset.

1. Place both headphones in the charging case.
2. Close the lid and wait 10 seconds.
3. Open the lid and take out the headphones – they should automatically turn on and sync.

If this does not help, reset to factory settings:

1. Hold the button on the headphone (if any) for 15-20 seconds until the indicator starts flashing red and white.
2. For models without buttons (such as Xiaomi Buds 4), use a touchpad combination – usually touch 5 times in 3 seconds.
3. After reset, connect the headphones again via Bluetooth.

Updating firmware

Outdated firmware can cause synchronization problems.

1. Connect your headphones to your Xiaomi smartphone (or other device with the Mi app) Home/Xiaomi Wear).
2. Open the app and go to the Devices section → Headphones → Update of the PO.
3. If a new version is available, download it and install it.

⚠️ Warning: Do not interrupt the upgrade process! If the earphone goes off during firmware, it can lead to complete inoperability.

2.3. Check Bluetooth settings and sound

Sometimes the problem lies in the settings of the phone or PC:

• 📱 On Android: Go to Settings → Connected devices → Bluetooth, find your headphones and press Forget the device. Then plug in again.
• 💻 On Windows: Open the settings → Devices → Bluetooth, remove the headphones and perform re-pairing.
• 🔊 Check the sound balance: on Android in the player or sound settings can be moved slider left / right, because of which one earphone is silent.

If the earphone is connected but there is no sound, try:

• Switch audio output to Stereo (in Bluetooth settings).
• Disable functions like Mono-audio or low-latency audio.
• Check if the phone conversation mode is activated (sometimes it turns off the sound in the headphones).

3. Hardware malfunctions: when disassembly is needed

If the software methods didn't work, the problem is probably the hardware, and let's look at the typical hardware breakdowns and how to fix them.

Oxidation or break of contacts

A common cause is moisture or mechanical damage to the contacts inside the earphone.

• The earphone doesn't charge in the case.
• The indicator flashes red and goes out.
• The sound is interrupted or distorted.

The repairs will require:

1. Carefully open the headphone case (use a plastic shoulder blade or mediator).
2. Inspect the contact areas on the board and battery - if there is oxidation (green / white coating), clean them with an alcohol solution and a brush.
3. Check the integrity of the wires that go from the battery to the board, if the cliff is, solder them back (you need a soldering iron with a thin sting).

⚠️ Note: Use flux and low temperature (maximum 300) when soldering°C, so you don't damage the chips. If you've never soldered, you'd better take it to the service.

Battery discharged or bloated

The batteries in the wireless headphones last 2-3 years, after which they lose capacity.

• The headphone discharges in 10-15 minutes.
• It does not work even after a long charge.
• Case shows that the earphone is charged, but it does not work.

The solution is to replace the battery.

1. Open the earphone case.
2. Disconnect the old battery (usually glued or soldered).
3. Install a new battery of the same model (can be found on AliExpress by number, for example, BL-5B for Redmi AirDots).
4. Soften your contacts and collect your earpiece.

The cost of a new battery is from 200 to 500 rubles. If you are not sure about the model, compare the photo of your battery with the offers of sellers.

Damage to speaker or microphone

If the headphone is turned on, connected, but there is no sound or it is distorted, it is possible:

• 🔇 Breaking the speaker wire (often after falling).
• 💦 Water entering the membrane (sound becomes muffled).
• 🔊 Factory marriage dynamics (rare, but it happens).

Diagnosis:

• Blow into the microphone of the headphone – if you hear a noise in another headphone, the microphone works.
• Connect the headphone to another device – if there is no sound everywhere, the problem is it.

Repair:

• If the wire breaks, sell it back.
• If the speaker is damaged, replace it (you can buy it for spare parts from donor headphones).
• If you get water, dry the earphone in rice or silica gel for 24 hours.

4. table of errors and decisions for popular models

Below are the most common problems and ways to fix them for different Xiaomi models:

If your model isn't in the table, try the generic methods from the previous sections. Most problems are solved the same way for everyone. TWS-Xiaomi headphones.

5. When to contact the service center

Not all breakdowns can be repaired by yourself.

• 🔧 The headphone does not respond to reset and does not turn on (possible malfunction of the controller).
• 🔥 The board is blackened or there is a smell of burning (short circuit).
• 💧 The headphone fell into the water and does not work (you need professional cleaning).
• 🔊 The sound is distorted even after the speaker is replaced (problem in the amplifier).

The cost of repair in official Xiaomi services:

• The diagnosis is free (if you repair them).
• Battery replacement is 800-1500 rubles.
• Replacement of the speaker - 1000-2000 rubles.
• Repair of fees - from 2000 rubles.

⚠️ Note: If the headphones are warranty (usually 12 months), do not open them yourself - this will void the warranty.

💡

Before visiting the service, make a video that shows that the headphone is not working, which will help avoid arguing with the master about whether he was a worker in the beginning.

6. Prevention: how to prolong the life of headphones Xiaomi

To avoid any future damage, follow these guidelines:

• 🔋 Charge your headphones correctly: Don't leave them in a case for more than 24 hours. Use the original cable and power supply. Once a month, discharge the headphones to zero, then charge to 100%.
• 🚿 Protect from moisture: Even if the headphones have protection IPX4, Don't wash them under the tap. After exercise, wipe them with a dry wipe. Don't store them in wet areas (bathroom, pool).
• 📦 Store in case: Don't throw headphones on a table or in a bag without a case. Close the case lid to avoid getting dust.

Also, update your firmware regularly through Mi Home – this fixes bugs and improves connection stability.

💡

The most common cause of wireless headphone failure is mechanical damage (falls, bumps) and moisture. Compliance with the rules of operation prolongs their life by 2-3 times.

FAQ: Frequent questions about Xiaomi headphones that don't work