Disassembly of Xiaomi massagers: a step-by-step guide with photos and repair tips

Xiaomi massagers are popular home muscle repair devices, but even they are not immune to breakdowns. Most often, users face battery, motor or mechanical damage to the body. You can disassemble the Mi Massage Gun or Mi Body Massager yourself, but you need accuracy and design knowledge. In this article, detailed instructions with a photo, a list of necessary tools and critical warnings to avoid typical errors.

We have analyzed the experience of repairing Xiaomi Mi Massage Gun 2, Mi Body Massager Pro and other versions to create a universal algorithm. Please note: disassembly will void the warranty, so resort to it only when the warranty period expires or if the device is no longer warranty. If you are not sure of your skills, you should contact the Xiaomi service center.

Preparation for disassembly: tools and security measures

Before you start, make sure you have everything you need, and without the right tools, you risk damaging the body or the internal components.

• 🔧 Set of screwdrivers (cross-cross-haul) PH00, PH0, flat 1.5 mm, 2 mm)
• 🔨 Plastic mediators (to separate the latches of the body)
• 🧲 Magnetic mat or screw container (so as not to lose small details)
• 🔋 Multimeter (to check the battery and contacts)
• 📸 Smartphone (to photograph the process - useful when Assembly)

Also prepare the workplace: a table with good lighting, no carpets (so as not to lose screws) and with antistatic coating (if any). Xiaomi massagers often use glue to fix the battery - stock up on isopropyl alcohol (90%+) remove.

⚠️ Warning: Do not disassemble the massager immediately after use! Let it cool for 1-2 hours - overheating of the motor or battery can deform the plastic, and the body will be more difficult to remove.

If you're disassembling a device because of power issues, check the charger and cable first. Sometimes the problem lies in them, not in the massager itself. Use the original Xiaomi cable or a certified Quick Charge 3.0-enabled counterpart.

Removal of the upper cover: how to open the case without damage

Xiaomi massagers typically have two halves held together by latches and screws, starting at the top (where the power button is located).

Step 1: Turn the massager down. Most models have screws hidden under rubber legs or stickers. Carefully tuck them in with a plastic mediator or a blunt screwdriver. Under the legs you will find 2-4 screws (depending on the model).

Step 2. Unscrew all the visible screws. In Mi Massage Gun 2, for example, there are 6:4 under the legs and 2 under the decorative panel near the charging connector. Use a cross screwdriver. PH0 — Do not use excessive force so as not to tear the slats.

Step 3: Once the screws are removed, insert the plastic mediator into the gap between the halves of the body (start from the charging connector side). Carefully guide the mediator around the perimeter, disengaging the latches. If the case does not respond, do not push harder, check if all the screws are unscrewed.

The screws under the legs removed

Screws under stickers/panels removed

Use a plastic mediator (not metal!)

The slot for the mediator is selected from the charging connector side-->

⚠️ Note: In Mi Body Massager Pro models, the top cover can be further glued along the contour. If you feel resistance, warm up the body with a hair dryer (temperature not higher than 60).°C) or use isopropyl alcohol to dissolve the glue.

Once you remove the top cover, you'll see the control board, the motor and the battery. Don't pull the wires, they can be soldered or connected through the connectors. Take a picture of all the components before you continue disassembling.

Battery recovery: risks and recommendations

The battery is the most vulnerable element of Xiaomi massagers, and over time it loses capacity, swells up, or stops holding the charge, and replacing the battery is one of the most common causes of disassembly.

Most models have the battery glued to the body with double-sided tape or heat-glue to remove it:

1. Disconnect the battery connector from the board (carefully pull the plastic tongue, do not pull the wires!).
2. Put a plastic blade or a mediator on the battery, and if it's glued, use isopropyl alcohol to soften the glue.
3. Do not use metal tools - the risk of battery puncture and short circuit!

Before installing a new battery, check its voltage with a multimeter.For most Xiaomi massagers, normal voltage is normal — 11.1V (3S configuration) or 7.4V (2S). If you buy a replacement, look for a battery with the same capacity and size. For example, a Mi Massage Gun 2 battery is suitable. 2200mAh 11.1V plug-in JST-XH.

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If the battery is swelling, don't try to pierce it! place the massager in a refractory container outdoors and wait for full discharge (24-48 hours) before disposing of it.

Diagnostics and replacement of the motor

The motor is the heart of the massager, and if the device doesn't vibrate, it makes extraneous sounds, or it's jerking, it might be the problem.

• 🔌 Contacts on the board and motor (oxidation or breakage)
• 🔄 Bearings (luft or jamming when rotating)
• 🔊 Noise (squeaking or hum may indicate wear of brushes in collector motors)

To extract the engine:

1. Disconnect the motor power connector from the board.
2. Unscrew the fasteners (usually 3-4 screws) M2.5 or M3).
3. Carefully remove the motor from the body. In some models, it can be fixed with additional latches.

To replace, choose a motor with similar characteristics. For example, for the Mi Massage Gun 2, a brushless engine is suitable. 24V power-wise 60W and rotation frequency 1800-3200 rpm. Pay attention to the length of the shaft - it must coincide with the original, otherwise the nozzles will not be correctly fixed.

Cleaning and lubrication of internal mechanisms

Dust, sweat and skin particles accumulate inside the massager over time, causing overheating and deterioration. Regular cleaning prolongs the life of the device.

What to clean:

• 🌀 Motor shaft (remove the old lubricant and apply a new one)
• 🔗 Bearings (blow with compressed air or rinse with alcohol)
• 📱 Control board (remove dust with a brush, use an eraser when oxidizing contacts)

Use silicone or Teflon lubricant (for example) for lubrication, WD-40 Specialist for electrical contacts. Don't use litol or solidol, they collect dust and can damage plastic. Apply a thin layer of lubrication on the motor shaft and bearings, avoiding hitting the board.

If the massager is making creaks when you're working, the problem may be the nozzles, take them off and check the mounting on the shaft, and sometimes you just need to drop the lubricants to the junction of the nozzle with the shaft.

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Cleaning of internal mechanisms is recommended every 6-12 months with heavy use, which prevents overheating and increases the life of the motor by 30-50%.

Massager Assembly: How to Avoid Mistakes

Assembly is as much a process as disassembly, and a common mistake is connecting the connectors incorrectly or clamping the wires, which leads to a short circuit.

Assembly order:

1. Set the engine and fix it with screws (do not pull!).
2. Connect the battery connector to the board (check the polarity!).
3. Lay the wires so that they do not overburden and do not fall under the latches of the body.
4. Combine the halves of the body and gently snap them, starting from the side of the charging connector.
5. Twirl all screws (use a dynamometer screwdriver, if any - tightening moment 0.3-0.5 Nm).

After assembly, check the work of the massager:

• 🔋 Turn on and make sure the battery is charging.
• 🔄 Check all vibration modes (whether there are jerks or extraneous noises).
• 🔥 Let me work 5-10 minutes - the body should not overheat.

⚠️ Warning: If the massager doesn't turn on after assembly, immediately disconnect it from charging! Check whether the battery and board are connected correctly.

Typical breakdowns and ways to eliminate them

Here are the most common problems of Xiaomi massagers and what to do with them:

If the massager fell from a height, check the integrity of the shaft of the motor and body. Cracks in the plastic can lead to imbalance and increased wear. In such cases, it is better to replace the whole body, it can be found on AliExpress or in Xiaomi service centers.

FAQ: Frequent questions about the dismantling of massagers Xiaomi