Xiaomi’s modern portable acoustics are known for their minimalist design and high build density, which often baffles users when trying to conduct maintenance. Owners of Mi Portable Bluetooth Speaker series devices or the more powerful Mi Smart Speaker sooner or later face the need to access internal components. The reasons can be different: replacing a failed lithium-ion battery, restoring a broken contact speaker or banal cleaning from dust and moisture.
But before you start to use tools, it's important to realize that opening the case automatically deprives you of the manufacturer's warranty. The factory assembly is leaky, and it's almost impossible to restore it at home. However, if the device is no longer warranty-worthy or critical, neat disassembly is the only way to bring the gadget back to life. In this article, we'll look at the process of dismantling various models of acoustic systems in detail.
Preparation of the workplace and the necessary tool
Well, disassembling electronics requires not only straight hands, but also a well-organized space. You need a flat table with good lighting, preferably an antistatic mat, although for simple household tasks a clean dry surface will do. The main tool you will need is a set of precision screwdrivers that includes cross bits of the size of the PH00 and PH000. Without them, you simply can not unscrew the screws that hold the internal boards.
The second critical element is plastic openers, often called spudger or mediators. Metal tools such as knives or stitches are strongly discouraged, as they can damage plastic latches or, worse, puncture the battery. Also, stock up on a suction cup to carefully lift rubber linings and tweezers to work with small plumes. Don't forget a hair dryer or thermophen to soften the glue if the model is monolithic.
⚠️ Warning: Before starting any work, be sure to completely disconnect the device from the network and discharge the battery to a minimum if possible to reduce the risk of short circuit in case of accidental damage to components.
To fix small screws, use a magnetic mat or just unscrew them on a piece of paper with signatures, which will save you hours of time when you're backassembled, when you find you have three extra screws of different sizes, and the organization of the process is the key to successful repair of any equipment.
Design features and hidden screws
Xiaomi engineers use different mounting strategies depending on the price segment of the model. Budget versions such as the Mi Compact Bluetooth Speaker 2 often use a combination of hidden screws under decorative elements and dense plastic latches. In more expensive models such as the Mi Smart Speaker IR, the main fixing element is a powerful industrial glue, and the screws may be completely absent or hidden deep inside.
The first thing you need to do is to look carefully at the perimeter, the bottom and the area around the connectors. Often the screws are masked under silicone anti-slip legs or decorative plugs, and you need to gently tamper with a thin needle or blade, trying not to damage the plug itself, because it will be difficult to glue it back, and in some cases, the screws can be closed with factory warranty stickers, the opening of which is immediately obvious.
Secrets of factory assembly
If there are no visible screws, then the body is held on latches and glue, in which case you need to find a barely noticeable joint between the halves of the body, and this is where the plastic blade will be inserted, and you need to act without fanaticism: plastic in cheap models can be fragile, and excessive force will lead to chips or cracks on the visible faces.
The process of disassembling portable models (Portable series)
So, let's look at the algorithms of what we do with the handheld models, like the Mi Portable Bluetooth Speaker, which are usually cylindrical or rectangular, with a perforated grille, and the first step is always to remove the bottom rubber or plastic lid, and if it's held on the screws, we twist them out, and if it's on the latches, we gently shovel around the perimeter, snapping the locks.
When you remove the bottom cover, you'll see the inside of the circuit board, which is usually the main circuit board with a Bluetooth controller, a charging module, and a battery socket, and the battery is often glued to the case or to the board itself. It may require a plastic card or a special tool to extract it, but it needs to be done very carefully so as not to deform the Li-Ion cell.
☑️ Checklist before autopsy
The speaker in portable models is often installed in a separate plastic glass or glued to the front panel. If your goal is to replace the speaker, you have to disconnect the thin wires that go from the board to the speaker. They can be soldered or connected through a connector. In the case of soldering, you need a soldering iron and the ability to work with it, because you can't just pull the speaker out.
Disassembly of smart speakers (Smart Speaker Series)
Smart speakers like the Xiaomi Smart Speaker or Mi Smart Speaker IR are more complex due to the presence of additional sensors, microphones and a more powerful acoustic system. These devices often lack the traditional bottom, and all electronics are packed in a single monoblock. The process begins with heating the bottom of the body with a hairdryer. The temperature should be sufficient to soften the glue (about 80-90 degrees), but not melting plastic.
Once warmed up, the bottom cover is easier to handle, and you'll find a heavy metal frame inside that acts as a radiator and weighting device, and the boards are multi-layered and densely packed, and you'll pay special attention to the plumes that connect the top to the microphones and the main board, and they're very thin and they break at the slightest careless movement.
To access the speaker in smart speakers, you often have to dismantle almost all the electronics, because the speaker is located at the bottom or occupies the entire inner cavity. Recovering such devices requires high skill, since it is extremely difficult to collect all the plumes back and fix the case without opening traces.
Battery replacement and speaker maintenance
The most common cause of disassembly is battery death. Xiaomi portable speakers use standard lithium-polymer batteries. When replacing, it is important to choose a cell with similar dimensions and connector. If the connector is different, it will have to be soldered from the old battery, observing polarity. If you mix up plus and minus, you can burn the power controller.
Maintenance of speakers is usually required if they start wheezing or high frequencies are lost, this can be caused by dust entering the diffuser or peeling off the coil. In some cases, careful purging with compressed air helps, and if the speaker is physically damaged, it is replaced with a similar diameter, depth of the seat and resistance (impedance).
⚠️ Warning: Never puncture or bend the battery at a sharp angle. Damage to the lithium cell's inner lining can cause instantaneous ignition or explosion.
When you build after you replace the components, make sure you check the device before the final gluing of the case. Connect the battery, turn on the speaker, and check the charging and sound, which will save you from having to re-assemble the device if you forgot to plug in some plume.
Table of compatibility and complexity of disassembly
Below is a comparison table that will help you assess the complexity of the work ahead for various popular Xiaomi acoustic models, based on average service center practices and enthusiastic experience.
| Model of the device | Type of attachment | Difficulty (1-5) | Risk of damage |
|---|---|---|---|
| Mi Portable Speaker | Screws + Latches | 2 | Low. |
| Mi Compact Speaker 2 | Glue + Latches | 3 | Medium. |
| Mi Smart Speaker IR | Industrial glue | 5 | High-pitched |
| Xiaomi Sound | Hidden screws + glue | 4 | High-pitched |
As you can see from the table, simple portable models are easy to disassemble and suitable for beginners. However, as functionality increases and the design changes towards monolithicity, the complexity of repair increases exponentially. For models with a rating of 4-5, it is strongly recommended to have experience with electronics.
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Use isopropyl alcohol to remove glue residues. It doesn't conduct current and evaporates quickly, leaving no trace on the board, unlike acetone or Kalosha gasoline.
Assembly and performance check
The assembly process is always more difficult to disassemble, as it requires a reverse sequence of actions and often the use of force to snap the locks. Make sure that all the plumes are in their channels and not clamped by the body. Wrap the screws evenly, without distortion, so as not to break the thread in the plastic racks. If the model is glue, apply a new layer of glue B-7000 or T-7000 around the perimeter, press the parts of the case and lock the rubber bands for 2-3 hours until completely dry.
After assembly, conduct a full cycle of testing: turn on, pair with the phone, check the volume at maximum, check the microphone (if any) and charge. If the device behaves strangely, for example, turns off or does not charge, it may be a problem in poor battery contact or damage to the board during disassembly.
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Quality assembly is more important than speed: it is better to spend an extra 20 minutes checking all connections than to reassemble the device because of a forgotten screw or a train that is not inserted to the end.
Remember that the sealing declared by the manufacturer (e.g., spray protection) will be lost after opening. Use such a column with greater care, avoiding moisture and dust entering the body.