How to disassemble headphones Xiaomi Mi True Wireless Earbuds Basic: detailed instructions with photos and tips

Xiaomi Mi True Wireless Earbuds Basic is a popular model TWS-But over time, even these reliable devices can fail: the microphone stops working, the sound disappears in one earphone or problems with charging. In most cases, the cause of the malfunction is dust, contact oxidation or mechanical damage, and disassembling headphones allows you to diagnose the problem and often fix it yourself without going to the service center.

This article will explain how to disassemble Xiaomi Mi True Wireless Earbuds Basic at home without damaging fragile internal components. We will look at the necessary tools, step-by-step instructions with nuances, and give recommendations for safety and diagnosis of typical malfunctions. The feature of this model is the absence of screws in the headphone case, which makes it difficult to disassemble, but makes it possible with the right approach.

Preparation for disassembly: tools and materials

Before you start disassembling, make sure you have everything you need, and using the wrong tools can damage the plastic case or the internal contacts, and here's the minimum set you'll need:

• 🔧 Plastic mediator or spatula (to carefully separate parts of the body). Metal tools will not work - they leave scratches.
• 🧲 Thin screwdriver with a flat tip (for example, for watches) - for putting the cover of the battery compartment.
• 🔥 Hair dryer or thermo-air station (optional, for softening the glue) The temperature should not exceed 60°C, otherwise the plastic is deformed.
• 🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.
• 📦 Container for small parts (such as magnetic substrate) so as not to lose springs or seals.
• 📸 Smartphone for photography – fix each stage of disassembly, so as not to confuse the order of assembly.

Also, prepare your desk: clean, well-lit, and draft-free (small parts are easy to blow away). If you're taking your headphones apart for the first time, practice on unnecessary equipment, such as old wired headphones with similar designs.

⚠️ Warning: Do not use knives or sharp objects to open the case! even a small scratch on the plastic can cause moisture to enter the earphone after assembly.

Xiaomi Mi True Wireless Earbuds Basic: What’s Inside?

Before disassembling, it is useful to understand how these headphones work. Unlike more expensive models (for example, Xiaomi AirDots Pro), the Basic version has a simplified design:

• 🎧 The speaker is 7.2 mm in diameter, located at the top of the case, fastened to the board with flexible wires.
• 🔋 Battery - lithium-polymer, capacity ~40mAh Payable to the fee, no replacement (whole-unit only).
• 📶 Bluetooth antenna – integrated into the board, not separately replaced.
• 🎤 Microphone – located at the bottom of the headphone, next to the infrared sensor.
• 🔌 Charging contacts – gilded, often oxidized when sweat is ingested.

The earphone body has two parts glued together, no screws inside, it's mounted on latches and glue, and the challenge is to not damage the plume of the speaker and the microphone that goes from the board to the top of the body.

If the battery is a problem in the case (it doesn't charge the headphones), it's easier to replace it -- it's mounted on double-sided tape and it has a standard jack, but that's a topic for a separate article.

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

Now, to the most critical stage, follow the instructions carefully, without missing the steps, and start with the right earpiece (the left earpiece is similar).

1. Heat the case (optional). If the headphones are new or the glue is fresh, you can slightly heat the body with a hairdryer (temperature 50-60 ° C, distance 10 cm) for 1-2 minutes. This will soften the glue and make it easier to separate parts. Don't overheat - plastic can deform!
2. Separate the body. Insert the plastic mediator in the seam between the top and bottom of the body (see photo below). Carefully guide the tool around the perimeter, pressing the latches. Start from the side opposite to the charging contacts, there is less risk of damage to the plume.
3. Removal of the board. Once the body is disconnected, you'll see the board with the battery, carefully tuck it in with a thin screwdriver on the microphone side, be careful - the circuit board is soldered with a speaker plume (thin black wire). Don't pull it!
4. If you need to reach the speaker, carefully solder the plume (no more than 30 watts) or disconnect the connector (if any). In the Basic version, the plume is usually soldered.

Prepared workplace with good lighting

All the tools at hand

The original look of the headphone was photographed

The headphone is completely discharged (to avoid short circuit)

There are spare clasps or glue (in case of breakage)-->

If you need to get to the charging contacts, you can clean them without completely disassembling: moisten the cotton swab in isopropyl alcohol and gently wipe the contacts, often solving the problem of poor charging.

⚠️ Warning: Don't touch the board with your bare hands - static electricity can damage the chips. Use an antistatic bracelet or at least ground by touching a metal object.

Typical Problems and How to Resolve Them

Now that the headphone is disassembled, let’s deal with the most common malfunctions and ways to fix them.

1.The earphone is not charging in the case

Reasons:

• 🔌 Oxidation of charging contacts (clean with alcohol).
• 🔋 Failure of the headphone battery (replacement required).
• 📱 Case problem (check contacts in case nest).

If the headphone is not charged after cleaning the contacts, check the battery voltage with a multimeter. The normal value is 3.7-4.2 V. If the voltage is below 3 V, the battery is likely dead.

2.The sound is lost or distorted

Possible culprits:

• 🔊 Displays damaged (check membrane integrity).
• 🎛️ The plume has moved from the board to the speaker (you need to solder again).
• 📡 Poor Bluetooth antenna contact (reconnect headphones to phone).

Often the problem is solved by simply rebooting the headphones: put them in a case, close the lid for 10 seconds, then pull out and reconnect.

3. The microphone is not working.

First, check the phone's settings, and it's possible that the microphone is disabled in the Bluetooth settings.

• 🎤 Contamination of the microphone hole (clean with a needle).
• 🔌 Oxidation of microphone contacts on the board (clean with alcohol).
• 🔧 Microphone damage (replacement required).

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If the headphone gets worse after disassembly, check if the battery fits tightly to the board. Sometimes it is displaced during assembly, and contact deteriorates.

Assembly of the headphone after disassembly

Getting the headphone back together is often harder than disassembling, and the key is to make sure that all the parts are in place and the body latches are fixed.

1. Check the plumes, make sure the plume is not twisted and fits tightly to the board, and if you've soldered it off, check the soldering quality.
2. Battery stacking. The battery should lie flat, without any distortions. If it shifts, the headphone may not fit into the case or the contacts will disconnect.
3. If the latches are broken, use a thin layer of B-7000 or similar (not superglue!) glue. Apply it only to the joints, avoiding getting inside.
4. So, the test before the final assembly, put the headphone on your phone and check the sound, the microphone, and the charging, and if something doesn't work, take it apart again, and it's easier to fix the error right away.

After assembly, let the glue dry (if used) for 1-2 hours. Do not put the headphones in the case immediately - check if the case is warming (this is a sign of a short circuit).

⚠️ Warning: If the earphone becomes worse in the ear after assembly, check if the silicone earpiece has deformed. If necessary, replace it with a new one (suitable for the earpieces from Xiaomi AirDots).

When the Disassembly Will Not Help: Alternative Solutions

Not all problems can be solved on your own, but here are the cases when it is better to contact the service or buy new headphones:

• 🔋 Bloated battery - its replacement at home is dangerous (risk of fire).
• 📱 Bluetooth module problems (earphone not connected or permanently disconnected).
• 💧 Getting liquid inside - even after drying, oxides may remain, which will eventually destroy the board.
• 🔊 Mechanical damage to the speaker (membrane rupture).

If the headphones are guaranteed, the disassembly will cancel it, in which case you should contact the official Xiaomi service (the list of centers is available on the mi.com website), the cost of repair is often comparable to the price of new headphones, so weigh the pros and cons.

Prevention: how to prolong the life of headphones

To avoid having to disassemble Xiaomi Mi True Wireless Earbuds Basic too often, follow these tips:

• 🧼 Clean your headphones once a month – remove earwax and dust from the speaker’s mesh with a cotton swab soaked in alcohol.
• 🔋 Don't empty your headphones to zero -- try to put them in a case at 10-20 percent charge.
• 🌡️ Avoid overheating – do not leave headphones in the sun or near heat sources (e.g. on the dashboard of the car).
• 💦 Protect yourself from the water, despite what you say. IPX4, prolonged contact with water or later can cause corrosion.
• 📦 Store in a case – this protects not only from loss, but also from dust and mechanical damage.

If the headphones have not been used for a long time, before charging, let them lie down for 10-15 minutes at room temperature, which is especially true in the cold season.

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Regular cleaning of contacts and careful handling prolong the life of headphones 2-3 times. Most failures are not related to failure of components, but to pollution or oxidation.

FAQ: Answers to Frequent Questions