How to disassemble headphones Xiaomi Mi True Wireless Earphones: a detailed guide with photos and tips

Introduction: Why to disassemble Xiaomi headphones and when it is justified

Xiaomi Mi True Wireless Earphones (also known as Mi AirDots or Redmi AirDots depending on the version) are some of the most popular wireless devices in their price segment. However, like any technology, they require maintenance over time, from simple cleaning of speakers to changing the battery or repairing buttons. Disassembling headphones is not an easy task, but it is doable with the right approach.

Before you start a screwdriver, you should honestly assess the feasibility of the procedure. If headphones warranty, you should contact the service center. If the warranty has expired, and the problem interferes with comfortable use (for example, poor charging contact, wheezing in the dynamics or quick battery discharge), self-repair can save time and money.

In this article, we will discuss in detail the process of disassembling Xiaomi Mi True Wireless Earphones, list the necessary tools, show the internal circuitry and give practical tips to avoid typical mistakes, and learn which parts can be replaced yourself, and in which cases it is better to trust the professionals.

Preparation for disassembly: tools and security measures

Before you start dismantling, prepare the workspace and tools.

• 🔧 Plastic mediator or a special tool for disassembling smartphones (so as not to damage the case).
• 🔨 Thin screwdriver (cross or flat, depending on the screws in your model).
• 🧲 Magnetic substrate or container for small parts (screws are easily lost!).
• 📸 Smartphone with camera – take pictures of each stage so as not to confuse the order of the assembly.
• 🧴 Isopropyl alcohol (for cleaning contacts and boards).
• 🔥 Dryer or thermo-air station (if necessary to solder off the wires).

Important: Xiaomi Mi True Wireless Earphones have adhesive connections, so disassembling without damage is almost impossible.Be prepared for the fact that after repairing the headphones may lose leakage (for example, worsening protection from moisture). If you are not sure about your skills, you better contact the master.

⚠️ Warning: Do not use metal tools to tamper with the body, this can damage plastic latches. Also avoid heavy heating: overheating can damage the battery or microphone.

Step-by-step instructions: how to disassemble the headphone body

The disassembly process begins with the top of the body being separated from the bottom. In Xiaomi Mi True Wireless Earphones, both halves are glued together, so you need to proceed carefully.

1. Carefully insert the plastic mediator into the gap between the top and bottom of the case. Start at the place where the button is located (usually there is less glue).
2. Slowly drive the mediator around the perimeter, separating the latches. Do not make excessive efforts - if the body does not respond, slightly heat it with a hair dryer (temperature is not higher than 60).°C).
3. Once the latches are snapped, remove the top cover, and inside you'll see a circuit board, speaker, battery and microphone.

Inside the Mi True Wireless Earphones case, you’ll find several key elements:

• 🔋 Battery (usually on the 40-50 MAC, soldered to the pay).
• 🔊 Dynamic (fixed to glue or bilateral scotch).
• 🎤 Microphone (located on the button or on the back of the board).
• 📶 Bluetooth antenna (thin wire running from the board to the top of the case).

I turned off the headphones from the charging case.|

I took a picture of the original state.|

Prepared tools and workplace|

Checked the warranty card (if any)|

Wearing an antistatic bracelet (optional)|-->

If you need to get to the board, carefully disconnect the plumes (if any) and unfurl the battery wires. To do this, use a soldering iron with a thin sting and a temperature not higher than 300°C. Do not overheat the board – this could damage the Bluetooth module or charging controller.

Scheme of the internal device and the assignment of key details

To successfully disassemble and repair Xiaomi Mi True Wireless Earphones, it is useful to understand how the headphones are built from the inside. Below is a simplified layout of the main components:

And notice the control board, which is the brain of the earphone, and it has these:

• 📡 Bluetooth module (usually based on a Realtek or Qualcomm chip).
• 🔌 Charging controller (manages power from the case).
• 🎛️ Button control chip (responsible for sensor or mechanical button).

If the headphone is not turned on or charged, the problem is often in the board, and you can use a multimeter in vertebrae mode to check the power chains and contacts.

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If after disassembly the headphone stopped connecting to the phone, try to reset it to the factory settings. 10-15 seconds until the indicator flashes red and white.

Typical malfunctions and how to fix them

If you take a look at Xiaomi Mi True Wireless Earphones, you may encounter a few common problems, including how to repair them:

1.The earphone is not charging in the case

Reasons:

• 🔌 Oxidation of contacts (on the headphone or in the case).
• 🔋 Failed battery (blown, loss of capacity).
• 📉 Problems with the charging controller on the board.

Decision:

• Clean the contacts with isopropyl alcohol and cotton swab.
• Check the battery voltage with a multimeter (should be) ~3.7V).
• If the battery is swollen - replace it (you can buy a similar one on AliExpress).

2. Wheezing or a quiet sound

Reasons:

• 🔊 Pollution dynamics (dust, earwax).
• 📛 Damage to the dynamics membrane.
• 🔌 Poor contact wire speaker with the board.

Decision:

• Carefully remove the speaker's protective mesh and clean it with a brush.
• Check the integrity of the membrane – if it is torn, the speaker must be replaced.
• Re-sweeten the speaker wires if they have moved away from the charge.

3. The earphone is not switched on or connected

Reasons:

• 📡 Problems with Bluetooth module.
• 🔋 Discharged or defective battery.
• 🔧 Short circuit on board.

Decision:

• Try charging the headphone from an external source (for example, through a TP4056-module).
• Call the charge for short circuit.
• If a Bluetooth module burns out, replacing it may not be cost-effective.

⚠️ Warning: If after repair, the earphone starts to warm or discharge quickly, turn it off immediately.This may indicate a short circuit in the battery or board.

Replacement of the battery: step-by-step instructions

One of the most common reasons Xiaomi Mi True Wireless Earphones are disassembled is because of battery replacement, and over time, lithium polymer batteries lose capacity, and the headphones begin to run out in minutes, and the replacement process involves several steps:

1. Disconnect the battery from the board, carefully soldering off two contacts (+ Use a soldering iron with a thin sting and flux solder.
2. Remove the old battery. It's usually glued to the body with double-sided tape. Be careful not to puncture the battery!
3. Install a new battery (suitable models: 3.7V 40-50mAh Seal contacts with similar dimensions, observe polarity.
4. Secure the battery in place with tape or glue (for example, B-7000).
5. Gather the body, making sure all the wires and plumes are in place.

Important: when soldering, do not overheat the battery - this can lead to its bloating or even fire: 250-280°C.

Where to buy a battery to replace?

• 🛒 AliExpress (Buttery for Xiaomi Mi True Wireless Earphones»).
• 🛒 Local radio parts stores (check dimensions: usually) 20×15×3 mm).
• 🛒 Service centers (sometimes sell used parts).

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Replacing the battery is the most efficient way to restore the headphones to their previous autonomy, but after replacing it, it may be necessary to calibrate the battery: fully discharge and charge the earphone. 2-3 once.

Cleaning and prevention: how to prolong the life of headphones

Regular cleaning of Xiaomi Mi True Wireless Earphones will help avoid many problems. Here are some tips for care:

• 🧼 Clean speakers: use a soft brush or vacuum cleaner to remove dust!
• 🔌 Cleaning contacts: wipe the charging contacts on the headphone and in the case with a cotton swab soaked in isopropyl alcohol.
• 💧 Moisture protection: Avoid water even if the headphones are protected IPX4. After training, wipe them with a dry wipe.
• 🔋 Storage: Keep your headphones in your case when not in use, and this will protect them from dust and mechanical damage.

If the headphones began to hold the charge worse, try to “overclock” the battery:

1. Completely discharge the headphones (before turning off).
2. Charge them in the case to 100% (the indicator on the case should burn green).
3. Repeat the cycle 2-3 times.

This can temporarily improve battery capacity, but if the battery is worn out, it will still have to be replaced.

Assembly of headphones after repair: tips and warnings

Building Xiaomi Mi True Wireless Earphones after disassembly is a task no less important than disassembling.

• 🧩 Check all the latches, make sure they're in place, or the body will hang around.
• 🔧 Do not drag the screws: this can damage the plastic bushings inside the case.
• 📸 Check the photos taken before disassembly, which will help you to properly lay the wires and plumes.
• 🔥 Test before final assembly: connect the headphone to the phone and check the sound, microphone and charging.

If the headphone does not work after assembly, disassemble it again and check:

• The correct connection of the battery (polarity!).
• Integrity of plumes and wires.
• No short circuits on the board.

⚠️ Attention: If after assembly, the earphone starts to squeak or make extraneous sounds, most likely, the speaker is not connected correctly or the membrane is damaged.

If done correctly, your Xiaomi Mi True Wireless Earphones will last for years, but remember: after self-repair, the warranty is canceled, and improper actions can permanently disable the headphones.

FAQ: Answers to Frequent Questions