Xiaomi’s modern wireless acoustics are famous for their minimalist design and compact dimensions, but it is the lack of visible screws that often baffles users who have experienced a breakdown. Disassembling the Mi True Wireless Earphones model without special knowledge and tools is extremely difficult, since the company’s engineers use adhesives to protect against moisture and dust. If you plan to replace a failed battery or clean the speaker of earwax, you will need not only accuracy, but also an understanding of the internal architecture of the device.
In this article, we will take a closer look at the dismantling process to minimize the risks of damage to fragile plumes and plastic latches. Self-repair always involves the risk of loss of warranty, so weigh the pros and cons before starting work. The right sequence of actions and the use of quality tools will help you successfully complete the recovery procedure.
It is worth noting that the design TWS-Headset implies a high density of layout of elements. Inside the case Xiaomi Mi True is often missing the classic circuit board in the usual sense, and the controllers soldered directly on flexible plumes. Any careless tweezing can cause contacts to break, so prepare the workplace in advance.
Essential tools and precautions
Before you start dismantling, you need to assemble a specialized set of tools, because a regular screwdriver will not help here. TWS-Headsets require a thin metal scalpel, a plastic shovel and a suction cup to neatly separate the covers. You will also need a hair dryer or thermophene to soften the glue that seals the device's body.
It is important to ensure good lighting and no static electricity in the workplace. It is recommended to use an antistatic bracelet, as electronic components are sensitive to static discharges that can imperceptibly damage the charge controller or Bluetooth module. Do not ignore this stage of preparation to avoid fatal errors.
⚠️ Warning: Before disassembly, be sure to completely discharge the headphones to 0% and turn them off. Working with lithium polymer batteries under voltage increases the risk of short circuit and fire if the body is accidentally punctured.
To fix small parts, use a magnetic mat or containers with cells. The screws in these devices can vary in length, and entanglement in places during assembly can damage the internal filling.
- 🛠️ Thin scalpel or blade for cutting glue
- 🔧 Plastic mediators for opening the body
- 🌡️ Hair dryer for sealant heating
- 🧲 Magnetic screw-sorting mat
- 🔍 A magnifying glass or microscope for working with small details
☑️ Checking readiness for repair
Analysis of design and entry points
Xiaomi Mi True has a monoblock design where the main entry points are the outer ends and the junction between the upper and lower parts of the body. Unlike full-size headphones, there are no obvious screws hidden under the embushures. The adhesive layer runs along the entire perimeter of the connection, which requires uniform heating for safe opening.
Visually inspect the case for microcracks or traces of previous intervention. If the device has already been opened, the adhesive layer may lose its properties, and the risk of damage to the plastic when reheated increases, be especially careful in the area where the touch panels are located, as they often pass plumes under them.
Heat treatment should be done carefully: the temperature should not exceed 80-90 degrees Celsius, so as not to melt the internal plastic holders or damage the battery. Keep the hair dryer at a distance of 3-5 cm from the body and constantly move the flow of hot air. This will soften the glue without overheating the electronics.
| Body element | Type of attachment | Risk of damage | Tool. |
|---|---|---|---|
| External cover | Glue + latches | Tall (cracks) | Hair dryer + sucker |
| Dynamic grid | Clay. | Medium (deformation) | Thin blade |
| Charging contacts | Pouring/Pushing | High (cliff) | Tweezers |
| Battery | Adhesive tape | Critical (fire) | Plastic spatula |
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Use isopropyl alcohol (99%) to dissolve glue residues after heating – this will greatly simplify the opening process and reduce the force required to separate parts of the case.
The process of opening the headphone case
Start by carefully heating the joint between the halves of the body. Once the plastic is warm, insert a thin scalpel blade into the gap and make a light rotation to create the initial slit. Don't try to separate the parts immediately, act gradually, moving in a circle. The plastic in this model is quite fragile and can burst when a sharp jerk.
Once the gap is clear, replace the metal blade with a plastic mediator so that you don't scratch the internal components or damage the plumes that run along the perimeter. Slowly guide the mediator along the connection line, listening to the characteristic crackling of the adhesive that breaks off. If the resistance is too high, repeat the heating procedure.
When you split the halves, be very careful: often one part of the body is connected to the main board by a thin wire of a speaker or microphone. A sharp opening can lead to an instant break in the contact. The plumes in such devices have no margin of length, so all movements must be smooth and controlled.
⚠️ Warning: Never use metal tools to pick inside the case after opening.The metal can easily close contacts on the board, which will lead to irreversible failure of the power controller.
Battery Dismantling and Dynamics
When you successfully open the case, you'll see the internal layout of the device, which is usually mounted on double-sided tape or pasted in a special compartment, and to extract it, gently tuck the edge of the battery with a plastic blade, trying not to damage the battery shell.
The speaker is usually located in the front and can be further fixed with glue. It is important not to damage the membrane when it is dismantled, because even a microscopic puncture will lead to wheezing and loss of bass. The speaker is rarely required to replace the speaker, most often only cleaning the mesh from contamination.
If you are planning to replace the battery, make sure the new cell has identical dimensions and voltage. Using batteries with different characteristics can cause the charge controller to malfunction or even bloat the cell. Always check the marking before installing.
- 🔋 Carefully unplug the old battery by heating its base
- 🧹 Clean the seat from glue residues with alcohol
- 🔌 Check the integrity of the contacts before soldering a new item
- 🔊 Make sure the speaker channel is free of sulfur
Working with electronics and plumes
The Xiaomi Mi True internal board is a complex system with miniature components. Avoid physical pressure on the chips when working with it. If you need to disconnect the plume, use a plastic tool and bend the connector lock if it is provided by the design, and then pull at the metal connector, not the cable itself.
A common problem is the oxidation of contacts due to moisture, in which case it is recommended to wash the board of the ultrasonic bath using a special liquid or isopropyl alcohol.
When you reassemble, make sure that all the plumes are packed into their channels and not clamped by the case. Any wire hall will cause the device to work unstable or complete failure of functions. The microphone and antenna also require careful positioning to maintain communication quality.
What to do if the plume is broken?
Assembly and sealing of the device
The final step is to assemble all the components in reverse order, make sure the speaker and battery are sitting tight and not hanging around inside the case, and before connecting the halves, check the device's health by connecting it to a charger or smartphone.
To restore tightness, use a special B-7000 adhesive or similar adhesive for electronics. Apply it with a thin strip around the perimeter, avoiding hitting the speakers and charging contacts. After connecting the parts, fix the earphone with a rubber band or clip for the time of drying the adhesive (usually 2-4 hours).
Don't turn the device on immediately after assembly, let the glue and components settle down, and it's better to start the first run 12 hours after the work is done, so you can make sure that the connections are reliable and that there are no short circuits.
⚠️ Attention: Excess glue during assembly can be squeezed into the body and block the course of the speaker membrane or fill the microphone.
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Quality sealing is not only protection from moisture, but also a guarantee that the bass in the headphones will sound right, without losing low frequencies through the slits of the case.