Modern wireless headsets from Xiaomi and Redmi deservedly popular due to excellent sound and affordable price, but their monolithic design often becomes an obstacle during repair. The owner may face a situation when one of the headphones stopped holding the charge, began to wheez or completely lost contact with the phone.
The dismantling process requires high accuracy and understanding of the internal electronics, as Chinese engineers often use adhesive joints instead of screws. Wrong actions can lead to irreversible damage to the case or failure of the motherboard. In this article, we will look in detail at the stages of opening popular models. TWS-Headsets, necessary tools and hidden nuances, which are silent in service centers.
Before you start taking action, you need to evaluate the feasibility of repairs and prepare the workplace. It is important to understand that the warranty on the device will be lost immediately after the integrity of the seals or enclosure is violated. If you are not confident in your abilities, you should contact professionals, but if the goal is to restore the gadget yourself, follow the instructions below.
Workplace preparation and necessary tools
So, the way electronics are disassembled starts with arranging space. You'll need a clean desk with good lighting to see small screws and plumes. Dust and static electricity are the main enemies of chips, so it's recommended to use an antistatic mat or just work on a clean wooden surface.
To work with compact headphones Redmi AirDots or Xiaomi Buds standard set of screwdrivers will not be enough. You will need specialized tools that allow you to penetrate without leaving traces. The main emphasis is on thin metal blades and heating devices to soften the adhesive.
- 🛠️ Precision screwdriver kit (cross-hatch) P2, P3 flat)
- 🔥 A hair dryer or heating plate (to soften the glue)
- 🔪 Thin scalpel or blade (for primary autopsy)
- 🧲 Magnetic mat or screw sorting container
- 🧤 Antistatic gloves and tweezers with dielectric sponges
⚠️ Attention: Using knives for initial opening requires extreme caution.Downing the blade too deeply can damage the lithium polymer battery, causing it to ignite or bloat.
Pay special attention to the choice of scalpel. The blade must be new and sharp to make clean incisions without breaking the plastic. A dumb tool will crumble the body, making subsequent assembly and gluing impossible without visible defects.
Anatomy TWS-headphones Xiaomi and Redmi
Understanding the internal structure of the device is critical before any manipulations begin. Most budget models, such as the Redmi Buds 3 Lite or AirDots 2, have a similar architecture. Inside the compact housing hides the motherboard, dynamic driver, battery and antenna modules.
The design is usually divided into two main parts: the external (where the sensors and microphone are located) and the internal (where the battery and the main chip are located).The connection between the halves of the body is often made using ultrasonic welding or aggressive glue, which makes the opening process difficult.
Secret labelling of components
The speakers in these devices are most often connected through thin plumes or soldered directly to the board, which means that any careless movement of tweezers can break contact, and it will be impossible to restore sound without a microscope and a soldering station.
| Component | Location. | Disassembly risk |
|---|---|---|
| Battery | The bottom of the "legs" or bowl | High (puncture, bloating) |
| Dynamician | Upper part, by the net. | Medium (steer break) |
| Management fee | Central part of the hull | High (static, chipped) |
| Touch panel. | Outer face of the hull | Low (scratches) |
Step-by-step process of disassembling headphones
The plastic used in Xiaomi becomes more elastic at about 60-80 degrees Celsius. Heat the earpiece with a hairdryer evenly for 1-2 minutes, avoiding overheating at one point to avoid deforming the shape.
Once heated, take a thin metal spatula and gently insert it into the joint between the halves of the body. Move the tool along the seam, gradually increasing the gap. Don't try to open the earbud with one jerk - this is guaranteed to break the plastic latches.
☑️ Checklist before autopsy
When the case opens, you'll see the internal layout. At this point, it's important not to pull the halves too hard, as they can be connected by a thin wire speaker or microphone plume. Gently disconnect the connectors or, in rare cases, unsolve the contacts if you want complete isolation of the modules.
⚠️ Warning: Inside the case, tiny springs or plastic pads may be present, and the loss of even one of these parts can impair acoustic tightness and sound quality.
To remove the battery, which is often glued to the wall, use a plastic card or a shoulder blade. Tap the edge of the battery and slowly separate it from the body, trying not to damage the battery shell. Metal tools are prohibited here.
Battery replacement and speaker cleaning
One of the most common reasons for seeking repairs is a quick discharge. Replacing a power source gives headphones a second life, but requires a precise matching of the same size and voltage.
When installing a new battery, make sure the contacts are securely fixed. If the connector allows, use a drop of dielectric adhesive to lock in, but do not block access to the contacts for future charging. After installation, conduct a primary low-current charge.
Cleaning the speaker is a simpler procedure, but it requires delicacy, and the speaker grid can be neatly cleaned with a soft brush soaked in isopropyl alcohol, which will help remove the earwax and dust that often cause a quiet sound or crackle.
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Use 99% isopropyl alcohol to clean your contacts. Ordinary alcohol or vodka contains water that can cause corrosion of the chips in the future.
If the speaker membrane is damaged (severe or dented), cleaning will not help, in which case a complete replacement of the dynamic module is required, which is more difficult to find on sale than standard batteries.
Assembly and sealing of the shell
The final step is assembly. Before joining the halves of the body, be sure to remove the residue of the old glue. The surface must be perfectly clean and fat-free for the new formulation to be properly adhesive. Use an adhesive gel such as the B-7000 or T-8000, which remains elastic after drying.
Apply a thin layer of glue around the perimeter of the joint, avoiding getting inside the speaker or board. Excess glue, exposed to the outside, easily removed with a dry wipe until completely solidified. After joining the parts, fix the earpiece with a rubber band or a clip for 2-3 hours.
- 🧴 Dispose of joints with alcohol before gluing
- ⏳ Give the glue to grab for at least 2 hours
- 🔋 Check the sensor before full fixation
- 🧹 Remove dust from the outer surface before the final drying
Take your time to turn on the device immediately after assembly. Allow the glue to be fully polymerized, otherwise the pairs may settle on the contacts and cause oxidation. Full strength of the compound is gained after 24 hours.
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Quality sealing is not only aesthetics, but also protection of internal electronics from moisture and sweat, which is critical for wearable devices.
Common Mistakes and How to Avoid Them
Beginners often make the mistake of trying to tamper with the body in the wrong place. In Redmi models, the seam can be hidden under a decorative lining or mesh. Careful inspection in bright light helps to find the entry point where the glue layer is minimal.
Another common problem is that the plume is damaged when you're not handling it carefully. When you're disassembling, always visually monitor where the connecting lines are, and if you feel resistance when you're disconnecting the parts, there's a wire that's connected somewhere.
⚠️ Warning: Never use superglue (cyanacrylate) to build headphones.It releases pairs that form white plaque on sensor lenses and speakers, permanently impairing their performance.
Ignoring the safety rules of lithium batteries can lead to short circuits, so if the battery is swelled, it cannot be pierced or compressed very much, and these cells require special disposal and replacement with the utmost care.