How to Disassemble Xiaomi Mi True Wireless Earphones 2 Basic: Full Guide

Modern compact gadgets such as the Xiaomi Mi True Wireless Earphones 2 Basic (TWSEJ061LS model) are designed with maximum tightness and aesthetics, which often makes them almost disposable in the eyes of the average user. However, if the device stopped holding the charge, there was extraneous noise in the speakers or just requires a thorough cleaning of earwax, the only way out is the physical disassembly of the body. This is a complex process that requires not only a specific tool, but also an understanding of the internal architecture of the device, where every millimeter of space is occupied by electronics.

Unlike full-size headphones, there are no screws on the outside, and all the connections are hidden under dense layers of glue and plastic latches. Opening the case is always a risk of damaging fragile plumes or deforming the plastic, so before starting work, you need to soberly assess your skills and the availability of suitable equipment. This article describes the dismantling process, relying on the design features of this model to minimize the likelihood of fatal errors in repair.

It is important to note that any interference with the design TWS-Xiaomi headphones automatically result in loss of warranty service. If your device is still under warranty, it is wiser to contact an authorized service center. But if the warranty has already expired, and the desire to restore the gadget is great, then following the instructions below will help you to carefully get to the insides of the device.

Required tools and workplace preparation

The success of the dismantling operation depends on the quality of the tool used. Attempting to open the case Xiaomi Mi True Wireless Earphones 2 Basic with a knife or brute force is almost guaranteed to lead to deep scratches and chips on glossy plastic. You will need a specialized kit that allows you to work with microscopic gaps.

The main tool will be a thin metal scalpel or a professional electronics-opening mediator. Plastic blades may be too thick for the tight joints of this model, so it is better to use a thin steel blade, acting with extreme caution. Also, a hair dryer or thermophene (with temperature adjustment) will be an indispensable assistant, since the device body is fastened with heat-resistant glue.

In addition to the main tool, prepare the following:

• 🔧 Precision screwdrivers (cross-haired) PH000 and flat) for working with internal screws.
• 🧲 Magnetic mat or organizer for folding screws so as not to lose microscopic fasteners.
• 💨 Pear for dust cleaning or canister with compressed air to remove contaminants after opening.
• 🔦 Powerful lamp or magnifier, as the internal components are very small and require good lighting.

⚠️ Warning: Do not use a household hair dryer at maximum temperatures for a long time, as this can melt internal plastic cells or damage the battery — 60-70 degrees Celsius.

Organize the workspace so that the surface is clean, flat and well-lit. Small parts, such as speaker grids or micro-screws, are easily lost on carpet or dark furniture. It is recommended to cover the table with white cloth or use a light sheet of paper on which all the elements of the construction are clearly visible.

Design and access points analysis

Xiaomi Mi True Wireless Earphones 2 Basic is made in the form factor "legs", where the main electronics and battery are located in the lower expanding part, and the speaker is in the upper. The body looks monolithic, but in fact it consists of two main hemispheres connected by a central seam. This model has no visible screws, indicating the use of ultrasonic welding or tight bonding technology.

Before you start physical action, carefully examine the joints of the body. The gaps can be almost invisible to the naked eye. The main seam runs vertically along the leg and horizontally around the speaker head. This is where the tool will be inserted. It is important to understand that inside there are plumes connecting the main board to the battery and speaker, and damage to them will make repair impossible.

For a better understanding of the structure, let’s look at the main components we’ll get to:

• 🔋 Lithium-polymer battery located at the bottom of the "legs».
• 🎚️ Principal circuit board (PCB) Bluetooth module and charge controller.
• 🔊 Dynamic driver closed by protective grid and membrane.
• 🎤 Microphones and touch panels integrated into the upper part of the case.

The design of the TWSJ061LS suggests that the primary opening is most often done through the bottom of the charging contact, or through the side seam. The choice of entry point depends on the specific purpose of the repair. If you want to replace the battery, it is more convenient to start from the bottom. If the goal is cleaning the speaker, the emphasis shifts to the top head.

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Before disassembling, take some photos of the headphones from all angles, which will help you remember exactly how the parts were located and where the connectors looked when you assembled them back.

The process of opening the body: step-by-step instructions

Start by carefully warming the body. Direct the flow of warm air from the hair dryer to the joints of the headphone body, evenly warming the perimeter for 1-2 minutes. This is necessary to soften the adhesive compound that holds the halves of the body together. Don't overheat the plastic, keep the hair dryer at a distance of 5-10 cm and constantly move it.

Once warmed up, take a thin metal scalpel or mediator. Put the blade in a barely noticeable gap on the side of the headphone leg. Act slowly by making neat swaying movements to layer the glue. Don't try to swivel the tool around the axis like a screwdriver, better move along the seam, gradually increasing the gap. When a small gap appears, insert a plastic card or a thin blade to record the result.

Move around the perimeter, sequentially peeling off the halves of the body, and you'll hear the characteristic cracking of the adhesive being torn, which is normal, the key is not to put too much effort into the cracks, and if the resistance is too high, stop pulling and reheat the problem area.

When the main latches are freed, you can carefully split the body into two parts, and inside you'll see the main board, closed with an additional layer of protection or soldered to the structural elements. Be very careful: even after the body is separated, the parts can remain connected by thin wires or plumes.

⚠️ Attention: It is strictly forbidden to sharply pull the halves of the body after the appearance of the first slit. Inside, a plume of a speaker or battery can pass, which is easy to break with careless jerking.

Dismantling internal components and replacing elements

After a successful opening, you will see the internal “stuffing” Xiaomi Mi True Wireless Earphones 2 Basic. Most often, the repair consists of replacing the battery or cleaning the contacts. The battery is usually a small rectangular or cylindrical element glued to the wall of the case or fixed in a plastic bed.

To remove the battery, gently tuck it in with a plastic spatula. If it sits on double-sided tape, help yourself with a hairdryer by slightly warming up the area under the battery. Never use metal tools to pick the battery, as its puncture can cause fire or chemical reaction of the electrolyte.

If you want to get to a speaker or a board, look at the screws. In some revisions, the board can be screwed with microscopic screws hidden under stickers or layers of plastic. Use a magnifying glass to detect them. Unscrew the fastener, gently raise the board while watching the plumes.

The main stages of work with the insides:

• 🔌 Disconnection of the battery plume from the board (if there is a connector) or neat depravity.
• 🧹 Cleaning of contacts speaker and charging pins with alcohol or contact cleaner.
• 🔍 Visual inspection of board for oxides, swollen capacitors or detached elements.
• 🔋 Installation of a new battery with respect to polarity (red wire - plus, black - minus).

When installing a new battery, make sure that its capacity and voltage are consistent with the original. Usually, this model uses 3.7V or 4.2V cells. The wrong battery may burn the charge controller or not work at all.

Assembly and testing of the device

The Xiaomi Mi True Wireless Earphones 2 Basic is assembled in reverse order, but with one important caveat: the old glue will not hold as tightly. To seal the case, it is recommended to use a special glue B-7000 or E-8000, which remains elastic after drying and allows you to disassemble the device again if necessary. Superglue (cyanacrylate) is not recommended, as it becomes brittle and can damage the plastic if repaired.

Apply a thin layer of glue around the perimeter of the docked surfaces. Be careful not to hit the dynamic membrane, microphones or charging contacts, which will lead to irreversible sound damage or inability to charge. Combine the halves of the body and tightly press them together, removing excess glue with a napkin.

Use stationery gums or special clamps to fix the drying time. Don't squeeze the case too hard to deform the plastic. The time to fully polymerize the adhesive is 12 to 24 hours, although the initial grip is faster.

Table of common problems and methods of their solution in disassembly:

Once the glue is dry, wipe the body with a soft cloth and try to turn the device on. Place the headphones in the charging case and check if the indicator lights up. If it goes well, you can watch the indicator light up and hear the characteristic conjugation sound when you extract it.

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The quality of the gluing directly affects the moisture protection and acoustic properties of the headphones. Don't ignore the step of fixing the case during the drying of the glue.

Frequent errors and precautions

One of the most common mistakes is ignoring the temperature regime when warming up. - Xiaomi Mi True Wireless Earphones overheated plastic 2 The Basic can become deformed and the earphone will stop fitting into the charging case, and high temperatures are dangerous for the lithium battery, which can swell or catch fire when heated higher. 80-90 degree.

Another mistake is using aggressive chemistry to remove glue. Acetone or solvents can melt the glossy coating of the body, making it matte and sticky. Use only isopropyl alcohol or specialized electronic cleaners.

A list of actions that are strictly not allowed to be done:

• 🚫 Picking the body with thick screwdrivers or knives without prior warming up.
• 🚫 Try to charge or turn on the headphone immediately after soldering, not allowing the components to cool down.
• 🚫 Leave the headphone unattended during warm-up hairdryer.
• 🚫 Use water or wet wipes to clean internal boards.

⚠️ Warning: If you smell burning or see smoke when connecting your earphone to a charge after repair, immediately disconnect it from the power source.

Final operational recommendations

After successful disassembly and assembly of Xiaomi Mi True Wireless Earphones 2 Basic, the device may lose some of its moisture protection. The B-7000 glue provides good leakproofness, but it does not compare with factory ultrasonic welding. So try to keep the refurbished headphones from sweat, rain and high humidity.

Regularly clean the speaker mesh of earwax using a dry toothbrush. The accumulation of contaminants is one of the main causes of quiet sound and membrane failure. Also monitor the state of the charging contacts on the earbud and inside the case; oxidation of contacts often causes the device to stop charging.

Keeping these simple rules will extend the life of your headphones and allow you to enjoy quality sound for a long time, and remember that accuracy and patience are the main tools of the master when working with miniature electronics.

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Keep your headphones dry at room temperature. Extreme cold or heat in the car can negatively affect battery capacity and the integrity of adhesive joints.