Xiaomi’s portable acoustics are deservedly popular for their compact size and sound, but over time, even reliable devices may require intervention. Disassembly of the Mi Bluetooth Speaker often becomes an inevitable necessity when the built-in battery stops holding charge, the speaker begins to wheez or the control button starts to fall. Owners often face a lack of visible screws, which creates the illusion of monolithic design and discourages the desire to climb inside.
In this article, we will take a closer look at the process of dismantling various modifications of the Chinese giant’s portable speakers, where to look for hidden mounts, how to safely disconnect the plumes and not damage the plastic latches. It is important to understand that any opening of the case automatically deprives the device of warranty, so weigh all the risks before starting work.
To successfully perform the procedure, you will need the minimum set of tools that any home craftsman will have. Pay attention to accuracy, since plastic in budget models can be quite brittle, and the internal layout is dense. Below is a step-by-step guide to help you repair or replace components.
⚠️ Warning: Before starting any work, be sure to completely discharge the device before turning off to minimize the risk of short circuits when the battery is turned off.
Workplace preparation and necessary tools
You can't really disassemble electronics properly without a well-organized space. You'll need a table with good lighting to see the fine details and not lose the tiny screws. Light should fall evenly, without creating deep shadows in the area of disassembly.
The basic toolkit includes a set of cruciform sting screwdrivers, preferably magnetic, to twist the internal screws. To work with the case, you will need plastic blades (spoogers) or old plastic cards that do not scratch the glossy surface.
- 🔧 Precision screwdriver set (PH00, PH000) small-scale.
- 🗑️ Plastic mediators or shoulder blades for opening the body without damage.
- 🧲 Magnetic mat or container for sorting screws of different sizes.
- 🔋 Tweezers with antistatic coating for working with wires and connectors.
Also, it's not superfluous to have isopropyl alcohol to clean contacts and glue if you need to seal after assembly. Some models may have Torx thread screws, so check for the appropriate bits in advance. The toolkit takes a few minutes to prepare, but saves hours of searching during operation.
☑️ Ready to disassemble
Design analysis and search for hidden screws
Before using force, you need to carefully examine the appearance of the device. Xiaomi engineers often hide fasteners under decorative plugs or rubber legs. Visual inspection allows you to determine the type of build: on latches or on screws. Most models of the Mi Portable Bluetooth Speaker is assembled on screws hidden at the bottom.
First of all, flip the column over and look at the bottom panel, and you'll often see two round rubber legs or stickers with technical information, and that's where the main board and speaker are usually hidden, and you'll need to tweez the edges of the rubber carefully with tweezers or a blade to get to the fastener.
In some versions, the screws can be located under the speaker grid or in the recesses closed by the seals. Do not try to pick out the seals unless they are obvious plugs, as this can lead to damage to the body. If there are no screws at all, then the structure is held on plastic latches around the perimeter.
Types of fasteners in different models
Once you've found all the mounting points, make sure you've twisted them all out. A common mistake is trying to unclose the body when one screw is left swirling, causing the plastic ears to break. Use a flashlight to illuminate the holes and make sure there's no fastener.
The process of opening the case and dismantling the speakers
Once all the screws are removed, the most important step is to separate the body parts. If the device is assembled on the latches, insert a plastic blade at the junction between the upper and lower half of the body. Move the tool along the perimeter, hearing the characteristic clicks of the breakaway locks.
Don't put too much effort into the case if you don't give in. You'd better go around again, make sure all the latches are free. In models with a metal mesh speaker, you take the decorative ring off first, and then you twist the screws that hold the dynamic emitter itself.
| Component | Type of attachment | Tool. | Risk of damage |
|---|---|---|---|
| Bottom cover. | Screws + stubs | Screwdriver PH00 | Low. |
| Dynamic grid | Latches/Glue | Scapula | Medium. |
| Management fee | Screws + plume | Tweezers | High-pitched |
| Battery | Glue base | Plastic. | critical |
When removing the main board, be extremely careful with the wires that go to the speaker and battery. They can be short, and a sharp jerking movement can tear them away from the connectors. The dynamic emitter is usually glued to the body or held on screws that are accessed after removing the front panel.
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Warm up the body with a dryer at a low temperature for 1-2 minutes if the plastic seems too rigid – this will make it more elastic and reduce the risk of cracks when opening.
Replacement of the battery and work with electronics
One of the most common causes of disassembly is the failure of the lithium polymer battery, and once you get access to the insides, you'll see a battery that's almost always glued to the plastic base with double-sided tape, and you need to remove it carefully with a plastic card so that you don't damage the shell.
Before disconnecting the old battery, be sure to take a photo of the wires being soldered or remember the color marking: the red wire usually corresponds to the plus (+) and the black wire to the minus (-).
- 🔋 Carefully peel off the old battery, trying not to deform its body.
- 🧹 Clean the seat from the remnants of old glue with an alcohol napkin.
- 🔌 Connect the new battery to the board, observing the polarity of the connectors.
- 🧪 Check the voltage on the contacts with a multimeter before the final assembly.
If you change the speaker, pay attention to its impedance, which is usually 4 ohms or 3 ohms. Installing the speaker with other parameters can overload the amplifier. When soldering new wires, use a soldering iron with a thin sting and a minimum amount of solder to avoid overheating the contacts.
⚠️ Warning: Never puncture or bend the battery at a sharp angle, this can cause the lithium cell inside the housing to ignite.
Assembly of the device and verification of functionality
The assembly is done in the exact opposite order. Before you twist the screws, make sure that all the plumes and wires are packed into their channels and will not be clamped with the body. Incorrect stacking of wires can lead to the compression and break of the chain when the screws are tightened.
Rotate the screws cross-cross, gradually increasing the force to ensure that the parts of the body fit evenly. This is especially important for models with rubber seals that provide protection from moisture. Do not drag the screws, as the thread in the plastic easily breaks.
After physical assembly, connect the device to the charger, the charge indicator should light up, signaling the correct operation of the power supply chain, turn on the speaker and check the sound playback at different volumes to make sure there are no wheezing or extraneous noises.
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Quality assembly depends not only on the twisted screws, but also on the proper stacking of internal components that should not hang or press on the board.
Possible problems after the disassembly
Even with a careful disassembly, it can be difficult to start the first time. If the speaker does not turn on, check the contact of the battery connector with the board. Sometimes oxidized contacts require cleaning with a blower or alcohol. It is also worth checking the integrity of the fuse on the board, if any.
If the sound is quieter or the background is there, check the speaker's wires. Bad contact at the soldering site can be distorted. In case of Bluetooth connection problems, the antenna wire, which is often thin wiring that runs from the board to the edge of the case, may have been damaged.
A software reset may be required if the device is not behaving properly after replacing the components. To do this, press the on and volume button for 10-15 seconds at the same time, this will return the Mi Bluetooth Speaker settings to factory values.