Disassembly of the Xiaomi mouse: from the cross screwdriver to the chips

Xiaomi mice are some of the most popular peripherals, thanks to a combination of price, design and functionality. However, even the most reliable equipment requires maintenance over time: creaking buttons, sticking the scroll wheel, or just cleaning the contacts from dust. You can disassemble the Xiaomi mouse yourself in 15-30 minutes, if you know the nuances of the design and have a minimum set of tools on hand.

In this article, we will take a look at the disassembly process for different models, from the budget Mi Basic Mouse to the gaming Xiaomi Gaming Mouse. You will learn what screwdrivers you will need, how to carefully open the case without damage, and what to do if the mouse stops working after disassembly, and also unique life hacks for cleaning the optical sensor and restoring the tactile return of the buttons.

⚠️ Important: If your mouse is warranty, disassembly will void it. Xiaomi has a warranty card valid for 12 months from the date of purchase — check the check before you start work.

What Xiaomi mouse models can be disassembled independently

Not all Xiaomi mice are equally easy to disassemble, such as the adhesive-fitting models (such as the Mi Portable Mouse) require special care, and some game versions have hidden latches.

If your model is not in the table, pay attention to the type of mounting of the case:

• 🔧 The screw mount is the simplest. The screws are usually hidden under stickers or legs.
• 🧩 Latches -- neat. Use a plastic blade to keep the locks from breaking.
• 🎨 Glue is the hardest option. You'll need a dryer to soften the glue or a solvent (like isopropyl alcohol).

Preparation for disassembly: tools and precautions

Before you start, gather everything you need, and if you don't have at least one tool, you can damage the case or the circuit board.

Here's the minimum set:

• 🔧 Screwdrivers: cross (PH0 or PH1), flat (for slacking), five-pointed (for some game models).
• 🧲 Magnetic mat or bowl - so as not to lose the screws.
• 📸 Smartphone – Take photos of each stage of disassembly so as not to confuse details during assembly.
• 🧴 Isopropyl alcohol (90%+) - for cleaning contacts and sensors.
• 🖌️ Plastic blade or mediator to disconnect latches.

Also prepare the workplace:

• 🪑 Work at a table with good lighting.
• ⚡ Disconnect the mouse from the PC/laptop (if wired) or remove the battery (if wireless).
• 🧹 Remove small objects from the surface - screws are easily lost.

⚠️ Warning: If your Xiaomi mouse has a laser sensor (rather than an optical one), don't point it at your eyes when disassembling. A laser diode can damage your vision even if the mouse is turned off.

Step-by-step: how to disassemble the Xiaomi mouse

Consider a universal algorithm, using the Mi Basic Mouse, for other models, the nuances are specified in individual blocks.

Step 1: Removing the legs and unscrewing the screws

Turn the mouse over and look at the legs.

1. Carefully tuck your legs with a flat screwdriver or nail. They're glued, but they don't get off effortlessly.
2. Under the legs you will see 3-4 screws (depending on the model), twist them with a PH0 or PH1 cross screwdriver.
3. If the screws do not lend themselves, do not apply force - moisten the screwdriver with isopropyl alcohol for better grip.

Step 2: Separation of the hull

After removing the screws, carefully separate the upper and lower parts of the body:

• 🔹 Start at the back of the mouse (where the cable is connected or the battery is located).
• 🔹 Insert a plastic blade into the slot and slowly lead it along the body, snapping the locks.
• 🔹 If the case fails, check if all screws have been unscrewed (sometimes hidden under stickers).

⚠️ Do not use metal tools - they leave scratches and can damage the latches.

Step 3: Removing the printed circuit board

When you open the case, you'll see a PCB. It can be:

• 🟢 Fixed with screws -- unscrew them.
• 🔵 Inserted into the grooves -- gently slap it with a spatula.
• 🟣 Connected with plumes (in game models) - don't pull the wires, but disconnect the connector.

In Xiaomi Gaming Mouse, the board is often fixed with additional screws under the side buttons – they are easy to skip!

💡

If the board is not removed, check if the USB cable is connected to it (in wired models), it should be carefully soldered off or disconnected.

Step 4: Cleaning and repairing internal components

Now that the mouse is disassembled, you can:

• 🧹 Clean the sensor with a cotton swab dipped in isopropyl alcohol. Don't rub with effort -- the optical lens is fragile!
• 🔧 Check button microswitches (they often stick due to dust) and can be washed with alcohol or replaced with new ones (e.g. Omron D2FC-F-7N).
• 🔄 Lubricate the scrolling wheel with silicone lubricant (do not use WD-40 - it is aggressive for plastic).

If the mouse was not working before the disassembly, check the fee for:

• 🔥 Blackened or bloated capacitors.
• 💧 Traces of oxidation (green coating on contacts).
• 🕳️ Breaking tracks (use a magnifying glass).

Features of disassembling wireless mice Xiaomi

Wireless models (Mi Bluetooth Mouse, Redmi Mouse) have several key differences:

1. The battery compartment is often part of the body. In the Mi Bluetooth Mouse 2, it is glued, so you need to open it with a hairdryer (heat to 60-70 ° C).
2. The Bluetooth antenna is a thin wire that goes from the board to the back of the case. Don't pull it!
3. Additional sensors – for example, the motion sensor in the Redmi Mouse can be glued to the board.

In models with a type-C connector (for example, Xiaomi Mouse Lite), there is a frequent problem with the dump of soldered charging contacts.

• 🔌 Contact integrity on the board (use multimeter in vertebrae mode).
• 🔋 Battery condition (blown or leakage of electrolyte).

💡

In wireless mice, Xiaomi most often fails: 1) button microswitches, 2) charging contacts, 3) Bluetooth module (after falls).

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling.

Another common problem is the loss of screws: Xiaomi mice often use screws of different lengths (e.g., 2 short and 2 long) and if you confuse them in places, you risk damaging the board when you puff it up.

⚠️ Warning: If the mouse is perceived as single (or vice versa) after assembly, chances are you have misplaced the return springs under the buttons. Disassemble the mouse again and check their position.

Assembly of the mouse after disassembly: step-by-step checklist

Making a mouse is often harder than disassembling it.

After assembly:

1. Connect your mouse to your PC and check all the buttons in the X-Mouse Button Control program (you can download it on the official website).
2. Scroll the wheel up and down - it should move smoothly, without jamming.
3. Move the mouse over the surface – the cursor should move without jerking.

If something is not working properly:

• 🔄 Buttons stick → check the installation of micro-switches.
• 🖱️ Curse twitch → wipe the sensor with alcohol again.
• 🔋 No charge → Check the battery and charging connector contacts.

FAQ: Answers to Frequent Questions