How to disassemble the Xiaomi Mi mouse: step-by-step instructions

Xiaomi’s popular wireless manipulators are known for their minimalist design and ergonomics, but over time, even reliable technology requires maintenance. Often users face sticking buttons, losing communication, or the need to deep clean the interior of the dust and pile that accumulates under the scroll wheel. Self-disassembly of the mouse allows you to extend the life of the device without going to the service center.

In this guide, we will take a closer look at the process of dismantling the case, the design of hidden mounts and the nuances of working with electronics. You do not need complex tools, but accuracy and attentiveness will be key factors in successful repairs. We will analyze typical problems, such as double clicks, and explain how to fix them when accessing the insides of the device.

Before you start taking action, make sure you have a well-lit workplace. Any microelectronics is afraid of static electricity and sloppy handling, so follow the instructions consistently. The right approach ensures that once assembled, all the features of the device will work as new.

Tools and workplace preparation required

To do the job properly, you'll need the minimum toolkit that most home craftsmen have, the thin plastic card or mediator that you need to open the latches without damaging the glossy plastic of the case, and you're not recommended to use metal objects because they can leave deep scratches or damage the internal plumes.

The second important element is a set of precision screwdrivers, particularly the cross PH00 or PH000. screws in Xiaomi devices are usually very small and buried deep into the seats, so a standard household screwdriver may not fit or rip off the fastener cap.

• 🛠️ Precision screwdrivers (cross-hatched) PH0, PH00)
• 🃏 Plastic card, mediator or spatula for opening
• 🧲 Magnetic mat or small screw container
• 🧹 Compressed air or pear for dust cleaning

Organize the space so that all tools are at hand and the small parts do not roll far, it is recommended to use a magnetic mat or just a sheet of paper on which you will spread the screws in order of their extraction, which will greatly simplify the process of reverse assembly and eliminate the appearance of "extra" parts at the end of the work.

Design features and search for hidden screws

Xiaomi designers strive for maximum visual purity, so the Mi Wireless Mouse and Mi Portable Mouse series have almost no visible attachment elements on the outer surface. All screws are carefully disguised under decorative elements, which often confuses inexperienced users. The main secret lies in the bottom of the device, where the slip legs are located.

In most cases, one or two screws are hidden under a central Teflon sticker (glid) or under a removable battery cover. In new models that use an integrated battery, the screws can be hidden under the rubber plug of the charging port or directly under the main Teflon leg. It is critical not to heat the Teflon leg with a hairdryer too much, since the glue can melt and stain the insides, and the leg itself will deform.

To access the hidden fastener, gently tuck the edge of the Teflon pad with a thin blade or needle. Act slowly, trying not to tear the leg material itself, because the smoothness of the mouse depends on its integrity. If you damage the sticker when you remove it, you will have to replace it with a new one, otherwise the manipulator will not slide well on the surface.

Once you find the hidden screws, make sure you unscrew them all. Often one screw goes unnoticed, and when you try to separate the halves of the case, you can damage the plastic latches or plume. Check the device perimeter and battery compartment again before you start separating the body.

The process of opening the case and dismantling the board

Once all the screws are removed, the most delicate step is to separate the upper and lower parts of the case, and the design is supported by plastic latches that are located around the perimeter of the device, and to separate them, insert a plastic card or mediator into the junction between the halves and smoothly lead along the perimeter, slightly unclasping the case.

Don't make too much effort. If the body doesn't diverge, you may have missed one of the screws or missed one of the fixations. The characteristic click of the tool along the seam signals that the latch has been successfully released. Move sequentially, releasing one side, then the opposite.

When the case is opened, you will see an internal device, the control board is usually fixed to the bottom of the case or on a special frame. Notice the plumes connecting the main board to the scroll wheel or additional buttons (if the model has side keys), these connections are very fragile and require careful handling.

• 🔌 Disconnect the scroll wheel plume (if it interferes with access)
• 🔋 Remove the power source (battery) AA/AAA or turn off the battery)
• 🔩 Unscrew the screws holding the printed circuit board
• 👁️ Check the fee for oxides or damage

To retrieve the board, gently unscrew the locking screws. Sometimes the board can sit tight because of a tight fit of the buttons. In this case, lift it slightly on one side, making sure that nothing interferes with free movement. Now the electronic module is available for full diagnostics and cleaning.

Diagnostics and Elimination of Double Click

One of the most common problems with wireless mice, including Xiaomi products, is the so-called “double click” phenomenon, where two or more signals are recorded at a single click of a button, the reason being the wear or contamination of microswitches (micros) located under the buttons.

To fix the problem, first of all, you need to visually examine the area of the microswitch. Often, dust, pile or contact group gets inside the mechanism. Purging with compressed air and cleaning with alcohol (isopropyl) can temporarily solve the problem if the wear of the mechanics is not yet critical.

⚠️ Attention: Use of conventional ethyl alcohol or vodka can lead to corrosion of contacts and plaque. Use only purified isopropyl alcohol or special contact cleaners (Contact Cleaner).

If a simple cleaning didn't work, a more serious intervention would be needed, and in some cases, bending the metal contact plate inside the mikre helps, but it requires jewellery precision and soldering irons, as you have to solder the switch, disassemble it, and assemble it back. For most users, the best solution would be to replace the mikre with a new one, which requires soldering skills.

It's also worth checking the condition of the rubber pushers, which can deform or wear over time, leading to a fuzzy press. If the rubber band has lost shape, you can try cutting new ones out of thin plastic or using a drop of glue to restore height, but this is a temporary measure.

Cleaning the sensor and scroll wheel

The scroll wheel is the second element that suffers from pollution most often, and the pile and dust, stuffed around the axle, create resistance, causing the wheel to scroll in jerks or stop working in one direction, and when you disassemble it completely, you get the perfect access to fix this malfunction.

Carefully remove the wheel from the seat. Usually it is simply removed from the encoder axis. Carefully wipe the axle and inside of the wheel with a dry lilaless wipe. If the contamination is severe, you can use a cotton swab slightly dipped in alcohol, but then you need to let the parts dry completely.

Optical system

Once all components are cleaned, assemble the wheel mechanism back, make sure it rotates freely and without any extraneous sounds, and the encoder works properly to ensure that pages in the browser and documents scroll smoothly.

Assembly of the device and check of performance

The assembly is done in reverse order, but requires special care to the plumes and wires. Lay all the cables so that they are not stretched and do not fall into the friction areas of the moving parts. When installing the board, make sure that it sat down smoothly, without distortion.

As you connect the halves of the body, first snap the main locks at the corners, then swipe your fingers along the seam until you hear clicks all around the perimeter. Don't twist the screws right away -- first make sure the case is closed completely and there are no gaps. If the halves don't converge, don't push -- check if the wires and plumes are stacked correctly.

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When twisting the screws, don't put too much effort. The plastic in the attachment areas is thin, and the threads are very easy to tear. Twist the screws until you feel light resistance.

After you have secured the body with your screws and pasted (or replaced) the Teflon leg, install the power source, turn on the mouse and check all functions: cursor movement, left and right clicks, scroll wheel (including pressing) if everything is working correctly, the repair process can be considered complete.

Frequently Asked Questions (FAQ)

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Regular preventive mouse cleaning once a year significantly reduces the risk of double clicking and scroll wheel problems, prolonging the life of the device.