How to disassemble headphones Xiaomi Mi True Wireless Earphones 2: detailed instructions with photos and videos

Xiaomi Mi True Wireless Earphones 2 (codenamed TWS 2) remain among the most popular wireless headsets due to the price-performance ratio. However, over time, even they can fail: the microphone fails, the sound in one earphone disappears or the battery dies, in which case disassembly of the device becomes necessary — whether for cleaning contacts, replacing the battery or diagnosing the board.

In this article, you will find step-by-step disassembly instructions that take into account all the nuances of the Mi True Wireless Earphones 2 design, including a list of necessary tools, possible difficulties and tips for preventing damage. We will also discuss which parts can be replaced yourself and in which cases it is better to contact the service center. If you have never disassembled electronics, do not worry: with the right approach, the procedure will take no more than 30 minutes.

Preparation for disassembly: tools and precautions

Before you start disassembling, make sure you have everything you need. Xiaomi Mi True Wireless Earphones 2 are assembled on glue and latches, so you can not do without specialized tools.

• 🔧 Plastic blade (or mediator) - to disconnect the body without scratches.
• 🔨 Thin screwdriver (cross, 0.8-1.0 mm) - for unscrewing screws.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 🔥 Hair dryer or thermo-air station - for softening the glue (optional).
• 📸 Smartphone - for photographing the dismantling stages (useful when assembly).

⚠️ Warning: Do not use metal blades or knives - they will damage the plastic case and can close contacts on the board. Also avoid excessive heat with a hairdryer: temperatures above 60°C deforms plastic.

Before disassembling, completely discharge the headphones (up to 0%) and leave them in this state for 1-2 hours. This minimizes the risk of short circuit in accidental contact with the board. If you are planning to replace the battery, prepare a new element in advance - the appropriate models are C103452 or BL-5B (capacity 55 mAh).

Step 1: Removal of the upper body cover

So, to start with, the hardest part is to separate the top of the earphone from the bottom, and the body of the Mi True Wireless Earphones 2 is glued around the perimeter, so you have to be careful.

1. Place the headphone on a flat surface with a button down.
2. Insert the plastic blade into the gap between the top and bottom of the body (start from the side opposite the button).
3. Carefully swipe the perimeter with a spatula, gradually disengaging the latches. When resisting, do not press harder - it is better to heat the body with a hairdryer (temperature 40-50 ° C) for 10-15 seconds.

If the lid fails, check if there are any unconnected latches left, most often located near:

• 🔊 Dynamics (from the lattice side).
• 🔋 Charging contacts (lower part).
• 🎤 Microphone hole.

⚠️ Warning: Do not try to open the case by inserting a blade on the side of the button - there is a plume that is easily damaged.

Step 2: Disconnect the button plume and the battery

After removing the cover, you will see:

• 🔋 Battery (stick to the body).
• 📱 The main board with a chip BES2300.
• 🎛️ The button plume (thin flexible cable).

First thing you do is unplug the button plume. It's attached to the board using the help of a button. ZIF-The connector (white plastic latch) to release it:

1. Then, put the slap right up (it will be turned off).
2. Then, pull the rod out of the black (not the wires!).

Critical: if you damage the plume, the button will stop working, and it will cost 30-50% of the cost of new headphones. If the plume is not removed, check if the latch is completely reclined, sometimes it jams.

Then disconnect the battery. It's glued to the body with double-sided tape. Put it on the side of the shoulder blade and pull it out carefully. Don't pull the wires -- they're soldered to the board and they can come off!

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If the battery is swelling, don't try to puncture or bend it. Place the headphone in a sealed container and contact the service - the risk of fire is too high.

Step 3: Dismantling the main board

The main board is attached to the body in two ways:

1. Screwdrivers (2 pieces, under the cross screwdriver).
2. Glue (on the edges, for fixing the speaker).

First, unscrew the screws. They can be hidden under stickers or a heatpast -- remove it with a cotton swab dipped in isopropyl alcohol. Then gently tuck the board into a spatula. If it doesn't lend itself, heat the body with a hairdryer (maximum 50°C) and try again.

When dismantling the fee, pay attention to:

• 🔌 Charging contacts – they are soldered to the board and can come off.
• 🎤 Microphone - attached to glue, do not pull the wires.
• 🔊 Dynamics - glued to the body, do not tear it off by force.

Diagnosis and replacement of components

Now that the earphone is disassembled, you can start diagnosing or replacing parts. Below is a table with typical malfunctions and ways to fix them:

If you are planning to replace the battery, consider:

• The new battery should have similar dimensions (30×20×3.5 mm).
• Before soldering, clean the contacts on the board and battery.
• After replacement, fully charge the earphone before first use.

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The most common cause of breakdown after disassembly is improper assembly. All plumes and contacts must be securely fixed, and the screws twisted with a force of no more than 0.5 Nm (do not drag!).

Assembly of headphones: step-by-step instructions

The assembly is carried out in reverse order, but taking into account several nuances:

1. Make sure all the plumes are connected to the connectors (latches must click).
2. Check the polarity of the battery - red wire to "+", black to "-".
3. Apply a thin layer of glue to the edges of the case before closing the lid (use a B-7000 or similar glue).
4. Twisting the screws cross-cross to avoid skewing the board.

After assembly:

• 🔋 Charge your headphones within 2 hours.
• 🎧 Check the sound and microphone.
• 🔄 Reset the settings (press the button for 10 seconds) if the headphones are not synced.

⚠️ Warning: If the headphone doesn't turn on after assembly, check: Integrity of button plume (frequent reason after disassembly). Battery polarity (muttled "+" Charging contacts (they may have left when assembled) If you suspect a short circuit, immediately disconnect the earphone from charging!

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen make mistakes when disassembling Mi True Wireless Earphones 2. Here are the most common ones and ways to prevent them:

• 🔧 Damage to the button plume – use only plastic tools and do not pull the plume off the end.
• 🔥 Overheating the body with a hairdryer - keep the temperature not above 60°C and warm in short intervals (10-15 seconds).
• 🔋 Installing an incompatible battery – check the model (C103452 or BL-5B) and capacity (55 mAh).
• 🧲 Loss of screws or springs – use a magnetic mat and take photos of each stage.
• 🎛️ Incorrect speaker assembly – make sure the membrane doesn’t touch the body (this causes wheezing).

If you break a latch of the case or damage a plume, don't despair. Parts can be ordered on AliExpress or in specialty stores (for example, repair-universe.com).

• Body cover - 100-150 ₽.
• The button plume - 200-300 ₽.
• Management fee - 500-800 ₽.

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If the headphone is worse to hold after disassembly, it may be not only the battery, but also the power controller on the board, and replacing it requires soldering and better trust the professionals.

FAQ: Answers to popular questions