Modern portable speakers like the Xiaomi Mi Bluetooth Speaker 2 are known for their minimalist design and sturdy body, often making them almost monolithic to the average user. However, time is inexorable: the battery loses capacity, the speaker begins to wheez or the device stops turning on completely, requiring immediate intervention. Disassembling this model is a process that requires patience, a specific set of tools and understanding of the hidden design, since you will not find visible screws on the external surface.
In this article, we will take a detailed look at each step of dismantling, from removing the bottom lid to turning off the plumes, so you can safely diagnose or replace components. It is important to understand that opening the case automatically voids the manufacturer's warranty obligations, so weigh all the risks before starting work. Our goal is to provide you with comprehensive information to successfully restore the health of your audio system without causing additional damage.
Workplace preparation and necessary tools
Before you start to physically affect the case Xiaomi Mi Speaker 2, you need to organize a space that eliminates the loss of small parts. You need a clean table with good lighting, preferably equipped with an antistatic mat, although for everyday conditions, a normal dry surface. Chaos on the table is the main enemy of the repairman, because the screws in this model are used differently, and confusing their length during the assembly means damage to the insides.
To successfully perform the procedure, you will need the following set of tools, which it is desirable to prepare in advance:
- 🔧 Precision screwdrivers (cross-hatched) PH0, PH00 flat-skinned).
- 🎸 Plastic mediators or shoulder blades for opening the body (spudger).
- 🌡️ A hair dryer or thermal pistol for softening glue (optional, but desirable).
- 🧲 Magnetic mat or screw sorting containers.
Pay special attention to the choice of plastic tools: metal blades can easily damage plastic latches or scratch the glossy surface of the column. If you do not have a professional set, you can use old bank cards that are cut into strips, but they are less durable. Metal objects are only allowed to twist screws, but not to tamper with the elements of the case.
☑️ Ready for repair
Design analysis and search for hidden screws
The Xiaomi Mi Bluetooth Speaker 2 is designed to hide all the mounting points. Visually, it seems like the device consists of two halves connected by glue, but this is not quite the case. The main problem for beginners is that the screws often hide under decorative elements or rubber legs. In this model, the main barrier is the bottom panel, which captures the entire internal structure.
Take a close look at the bottom of the device, and you'll see four rubber legs that not only serve stability, but also mask the mounting points, and underneath these are the main screws that hold the bottom cover, and it's also worth checking the area around the Micro-USB charging port, although in this model it doesn't usually hide fasteners, but requires accuracy when working.
⚠️ Warning: Don't try to force the bottom lid off without making sure all screws are twisted. The plastic in this place is thin and can crack, leaving ugly chips around the perimeter.
Sometimes manufacturers use screws with a custom hat, but Xiaomi most often uses a classic cross. If you feel that the screw is not unscrewed, do not press too hard — perhaps a sourdough thread or you use a screwdriver of the wrong size, which will lead to the licking of the faces, in which case it is better to drip some alcohol or special liquid WD-40 and wait a few minutes.
Removal of the bottom cover and dismantling
Once you've carefully peeled off the rubber legs (which you can then glue back to double-sided tape), you'll see four screws open up. Spin them counterclockwise using a suitable cross screwdriver. Fold the screws into a separate container, noting that they belong to the bottom cover. Now comes the most critical moment - the separation of the body parts.
Put a plastic blade in the junction between the bottom and top of the body. Move around the perimeter, gradually snapping the internal plastic clips. Don't try to open the device on one side completely, it will break the latches. Act in a circle, passing each segment of the junction several times, gradually increasing the gap.
Difficult spots at autopsy
Once the bottom cover is removed, you'll see the inside of the speaker, you'll see the main electronics unit, the speaker, and the battery, and at this point, it's important not to pull anything sharply, because the components can be connected by short plumes or wires, and visual inspection of the board for oxides or bloating should be done immediately.
| Component | Location. | Type of attachment | Risks of withdrawal |
|---|---|---|---|
| Bottom cover. | Base of the hull | 4 screws + latches | Plastic cracks |
| Dynamician | Central part | Screws + soldering | Membrane break |
| Battery | Side niche | Glue base + connector | Battery puncture |
| Management fee | Upper part | Screws + plumes | Contact room |
Access to battery and control board
When you remove the bottom cover, you'll have access to the heart of the device, the control board and the power source. In the Xiaomi Mi Speaker 2, the battery is usually in a separate compartment or glued to the body for better fixation. Before you remove it, you need to disconnect the power connector from the motherboard. Do this carefully by putting your nail connector or plastic blade on, rather than pulling the wires.
If you're trying to replace the battery, you're going to need to unplug the battery after you turn off the wire, and it's held on double-sided tape, and to make it easier, you can slightly warm the back of the body with a hairdryer to a temperature. 40-50 But don't overheat the lithium polymer battery, it's dangerous. Pull the battery smoothly, trying not to deform its body.
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When installing a new battery, make sure it is the same thickness as the original battery, which can be too thick to fit into the body or overwhelm other components, causing a short circuit.
The control board in this model is compact and secured with several screws. If you want to dismantle it, first disconnect all the plumes that go to the control buttons and LED display. Remember or photograph the position of each plume, as they can have different lengths and configurations of contacts. The plumes are very delicate elements, they are easy to break if you carelessly jerk.
Replacement of speaker and work with audio components
The speaker in Xiaomi Mi Bluetooth Speaker 2 is central and closed with a protective grid. If the sound becomes quiet, hoarse or high frequencies are lost, most likely, the problem is in the diffuser or speaker coil. To replace it, you will need to twist the screws that hold the speaker's metal frame and unfurl the wires from the contacts on the board (or disconnect the connector if such a design is provided).
When soldering new wires, be polar: plus to plus, minus to minus. Incorrect connection will cause the speaker to work in antiphase, which will negatively affect the sound quality, especially at low frequencies. Use a soldering iron with a thin sting and a temperature of about 300-350 degrees, so as not to overheat the contacts on the board.
⚠️ Warning: When working with a soldering iron inside a plastic case, be extremely careful. A drop of melted solder or hot sting can instantly burn through plastic or melt the insulation of wires, creating a threat of short circuit.
If you change the speaker to an analog, pay attention not only to the diameter, but also to the depth of the seat and resistance (impedance). The standard resistance for such speakers is usually 4 Ohms or 8 Ohms. Installing a speaker with less resistance can overload the amplifier on the board, which will cause it to fail.
Assembly of the device and verification of functionality
The assembly is done in reverse disassembly. Before you snap the case, make sure to do an initial check. Connect the battery and press the power button. If the speaker has issued a characteristic greeting sound and has connected to the smartphone via Bluetooth, then you did everything right. Check all the buttons and indications.
Once you're comfortable, stow the wires so they don't get under the screws and are not clamped by the body. Carefully fit the halves of the body and press the perimeter to the characteristic snaps of the latches. Then twist the screws of the bottom lid. Don't tighten them too much - plastic can crack around the screw cap with excessive force.
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The final check before the complete assembly of the body is a critical step to avoid re-disassembly in the event of an error in connecting the plume or speaker.
Once assembled, wipe the body with a soft cloth to remove fingerprints and dust. Rubber legs, if they have lost stickiness, can be replaced with new ones or use universal rubber glue. Your Xiaomi Mi Bluetooth Speaker 2 speaker is ready to work again and will delight you with the sound for a long time.
Possible problems and ways to solve them
There may be unexpected situations during the repair process, such as when the circuit breaks, first check if the battery connector is fully inserted, and often the connector is not tight and there is no contact, and it is also worth checking the safety lock on the circuit board if the device does not respond to the connection to the charge at all.
Another common problem is extraneous noise or hum. This can indicate poor contact in the speaker circuit or that the speaker wire is pressed with the housing. Take the device apart again and make sure that all the wires are free. Mechanical damage to the tracks on the board requires more complex repairs using a multimeter and repair with conductive varnish.
If you're facing a problem you can't solve on your own, you shouldn't use force. You'd better stop and consult with more experienced craftsmen or look for circuitry for your own board revision. Electronics repair is a logical process where rush often leads to additional costs.