Users of the popular line of budget TWS-Xiaomi headphones often face the need to open the device body, which may be caused by the desire to replace a failed battery, clean the dynamic mesh from earwax or restore contact plume after a fall. Xiaomi Airdots S (also known as Redmi Airdots) is designed to make it as difficult to get inside as possible, which is the standard for today’s compact gadgets.
The dismantling process requires not only precision, but also an understanding of the internal architecture of the device. The adhesive backbone that holds the halves of the body together holds the structure securely, but is heated and mechanically affected when approached correctly. It is important to understand that any interference with the device automatically voids the manufacturer's warranty obligations, so you should start working only with the risk.
In this article, we'll take a closer look at every step of disassembly, from tool preparation to final assembly, and learn about the intricacies of plastic latches and micro components, and if you're willing to be careful and methodical, you can bring your headphones back to life or do the necessary prevention.
Tools and workplace preparation required
Before you start physically impacting the case of Xiaomi Airdots S, you need to organize a safe workspace. The surface should be clean, well lit and, preferably, do not have a pile that can get inside the device.
The main tool will be a thin metal blade or a scalpel with a thin blade, and an indispensable tool will be a hair dryer or thermophene to soften the glue, and remember to prepare a plastic card or mediator so that you do not scratch the glossy surface of the case when you try to separate it.
- 🔧 Thin metal spatula or scalpel for scalping the body.
- 🔥 A hair dryer or thermophen to heat the adhesive layer.
- 🧩 Plastic card or mediator for safe opening.
- 🧲 Magnetic mat for sorting small screws (if they are in the modification).
- 🔦 Bright lamp or magnifier for working with small details.
Pay special attention to soldering tools if you plan to replace the battery. The soldering iron should be thin stinger, flux should be inactive so as not to damage the board. Preparing all tools in advance will save time and reduce the risk of losing small parts during operation.
⚠️ Attention: Using too thick or blunt objects to open the body can lead to irreversible deformation of the plastic and the appearance of chips on the faces of the device.
Analysis of design and entry points
Xiaomi Airdots S design does not include visible screws on the outer surface, the entire assembly is supported by a tight fit and adhesive layer that runs along the perimeter of the junction of the two halves of the body, an understanding of this principle is critical to choosing the right opening strategy.
Inside the case, there's a main circuit board, a battery, and a dynamic emitter, all of which are wired or soldered directly to the board, and these are usually missing plumes, which makes the design easier, but requires careful removal of the circuit board so that the soldering is not damaged.
Internal layout
The entry point is the junction between the outside and the inside of the enclosure, and that's where you start heating and separation, and don't try to find the hidden screws under the silicone embroideries, because they're not there, which is a common misconception.
The process of heating and primary opening of the body
The most critical step is to break the integrity of the adhesive seam, to warm up the earpiece evenly, use a hair dryer at about 80-100 degrees Celsius, and don't hold it too close to melt the plastic or damage the battery inside.
After 2-3 minutes of heating, the glue will become elastic. Put a thin blade or blade into the junction of the body and gently, wiggle your halves. Move around the perimeter, gradually delving deeper. Sharp movements can break the internal plastic stiffness ribs.
☑️ Stages of primary autopsy
If you feel strong resistance, stop pulling and warm up the joint again. Patience at this stage is the key to success. Xiaomi Airdots S plastic is strong enough, but if you exert too much effort it can crack in an unpredictable place.
Dismantling internal components and boards
Once you successfully remove the outer cover, you'll see the inside contents, and the board is usually locked in its niche quite tightly, and carefully remove the main module, keeping track of the wires going to the speaker and the battery, which are very thin and easily break when you stretch.
To fully retrieve the board, you may need to unplug the wires, and if your goal is to clean, you can do without it, gently pushing the board aside, but replacing the battery or the speaker will require a complete despie of the contacts.
| Component | Type of attachment | Difficulty replacing | Risks. |
|---|---|---|---|
| Battery | Glue pillow + soldering | Tall. | Fire upon injury |
| Dynamician | Glue + Niche landing | Medium | Contact break |
| Fee (PCB) | Tight landing | Low. | Damage to the tracks |
| LED | Paying. | Tall. | Breaking off ration |
Avoid static electricity when working with the board. Use an antistatic bracelet or periodically touch a grounded metal object. The chips are sensitive to discharges that can imperceptibly bring the device down.
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When you unplug an old battery, use dielectric-coated tweezers to avoid accidentally closing the contacts of the new battery during the installation process.
Battery replacement and contact soldering
The most common reason for disassembly is to replace an exhausted battery, and the old battery must be carefully removed from your bed, often glued to double-sided tape, and then put a plastic spatula on it, trying not to damage the battery shell.
The new battery should have exactly the same dimensions and voltage (usually 3.7V).Be sure to get the contacts on the board and wires of the new battery before soldering. Use a minimum amount of solder so as not to create jumpers between neighboring contacts.
- 🔋 Prepare a new battery with identical characteristics.
- 🧹 Clear the landing site of the remnants of old glue.
- 🔌 Seal the wires of the new battery, observing polarity.
- 🧪 Check the voltage multimeter before installing in the case.
- 🛡️ Lock the battery with a new layer of glue or thermal scotch.
⚠️ Warning: Short-circuiting lithium battery contacts can cause instant heating and fire.Work fast and isolate contacts immediately after soldering.
After soldering, let the contacts cool naturally. Don't blow on them or cool them artificially, this can create microcracks in the solder. Make sure the wires are not clamped or touching the sharp edges of the board.
Device assembly and testing
The final step is assembly. Put all the components in the body so that the wires are not stretched and do not fall into the movement zone of the mechanical parts (if any), carefully combine the halves of the body, making sure that all the inner protrusions fall into place.
To fix, use a special electronics glue (e.g., B-7000) or thin strips of double-sided tape. Apply a thin layer of glue around the perimeter, avoiding getting inside the speaker or board. Squeeze the case and lock it with rubber bands for 1-2 hours until completely dry.
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The build quality directly affects the moisture protection and durability of the device - do not leave gaps between the halves of the body.
Once the glue is dry, do a test. Connect the headphones to the charger and check the indication. Then pair with the smartphone and check the sound in both channels. If everything works correctly, the Xiaomi Airdots S disassembly can be considered a success.