How to disassemble Xiaomi electric razor without damage: instructions for all models

Xiaomi electric shavers are a combination of modern technology and affordable prices, but even the most reliable technology can fail. If your razor stops turning on, does not charge well or makes suspicious sounds, disassembly can be the first step to diagnosing the problem. However, 90% of breakdowns after self-disassembly are due to damage to seals or breakage of plumes, which is why it is important to act carefully and according to instructions.

In this article, you will find step-by-step guides for popular models (Mi Electric Shaver). 1S, Mijia Electric Shaver 2, Mi Electric Shaver Pro, a list of tools you need and a list of critical mistakes to avoid, and we will also tell you when disassembly is justified and when to contact the service center.

If you've never been to appliances, start by watching video reviews, which will help visualize the process. For example, YouTube has detailed disassemblies that show the "weaknesses" of specific models, but remember, even if you find a video for your razor, the design may vary depending on the batch or region of delivery.

1. Disassembly preparation: safety tools and 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, and here's the minimum kit you'll need:

• 🔧 Set of screwdrivers (cross-haul) PH00, 1.5 mm flat, 0.9 mm hexagon for some models)
• 🧲 Magnetic substrate or screw tray (so as not to lose small details)
• 📸 Smartphone for photographing each stage (useful when reassembling)
• 🧴 Isopropyl alcohol (90%+) and cotton swabs to clean contacts
• 🔌 Plastic mediators (for careful liding)

Pay special attention to safety:

⚠️ Warning: Do not disassemble a razor if it is connected to a charge or was used less than 30 minutes ago. The capacitors in the circuit can store charge, which will lead to an electric shock.

Also prepare the workplace:

• 🪑 Work at a table with good lighting (ideally a table lamp with a magnification).
• 🧹 Remove foreign objects from the surface so as not to lose screws or springs.
• 🚫 Avoid carpeting – static electricity can damage electronic components.

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If you don’t have a magnetic substrate, use a piece of paper and a marker: draw a diagram of the screws as they are removed.

Disassembly of the body: remove the back cover and battery

Most Xiaomi models have similar body designs, but there are nuances. 1S — most common version.

Step 1 Removal of the back cover:

1. Turn the razor over and find 2 screws under rubber plugs (usually they are symmetrically arranged).
2. Carefully tuck the plugs with a plastic mediator - they are often glued.
3. Unscrew the screws with a cross screwdriver. PH00.

Step 2. Battery disconnection:

• After removing the lid, you will see the battery glued to the body.
• Take care to unplug the plume with a plastic blade.
• In some models, the battery is soldered - in this case, a soldering iron with a thin sting will be required.

For the Mijia Electric Shaver 2, the process is similar, but there can be 4 screws (two hidden under stickers).Be careful with stickers - their damage can violate the leakage.

Dismantling of knife block and nets

The knife unit is the heart of a razor, and it takes care to disassemble it, and in Xiaomi models, it is attached to the body with latches or screws.

For latched models (e.g. Mi Electric Shaver Pro):

For models with screws (Mijia Electric Shaver 2):

After removing the knife block, examine it for:

• 🔍 Blunt blades (require replacement or sharpening).
• 🧲 Magnetic particles between grids (deteriorating slippage).
• 💧 Traces of corrosion (indicate the ingress of moisture).

Diagnostics of electronic components

If the razor doesn't turn on or doesn't work smoothly, the problem can be in the control board, the motor, or the battery.

Battery check:

• Measure the voltage at the terminals with a multimeter. Normal for most models — 3.7V–4.2V.
• If the voltage is lower 3.0V, battery.
• Check the integrity of the wires going from battery to board.

Engine check:

• Connect the motor directly to the power source 3V–5V (polarize!).
• If the motor does not rotate, a break in the winding or wear of the brushes is possible.
• Listen to the sound: the grinding or vibration indicates the hit of foreign particles.

Checking fees:

• Check the fee for darkened areas (a sign of overheating).
• Check the capacitors – if they are bloated, they need to be replaced.
• Use a magnifying glass to look for microcracks on the tracks.

Typical malfunctions and their signs:

⚠️ Note: If there are items with markings on the board IC (Don't touch them with your bare hands. Static electricity can disable them. Use an antistatic bracelet or touch grounded metal surfaces before working.

5 Cleaning and lubrication of mechanical parts

One of the most common causes of razor deterioration is contamination of the knife block, and even if you regularly wash the razor underwater, microparticles of hair and skin can accumulate inside.

Step-by-step cleaning:

1. Immerse the knife unit in a container of warm water and razor cleaning agent (or liquid soap) for 10-15 minutes.
2. Use a soft toothbrush to clean the nets and blades. Don't use metal objects!
3. Wash the block under running water and dry with compressed air (for example, a dryer in cold mode).

Lubricant:

If you do not have a special lubricant, you can use:

• 🛢️ Vaseline oil (medical, without additives).
• 🔧 Lubricant for sewing machines (sold in hardware stores).
• ❌ WD-40 or other solvents – they are aggressive to plastic and rubber!

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Regular cleaning and lubrication extend the life of the razor by 30-50%, it is enough to carry out a deep cleaning once every 3 months, even if Britva works properly.

6. Backup Assembly: How to Avoid Errors

Assembly is the most critical step, as improperly installed parts can lead to short circuits or mechanical breakdowns.

Assembly order:

1. Install the knife unit in place, making sure that all latches are on their guides.
2. Connect the battery plume to the board (check polarity!).
3. Twirl the screws cross-cross to avoid skewing the body.
4. Install the back cover and check the density of the fitting (there should be no gaps).

Frequent errors in assembly:

• 🔌 Confused battery polarity – leads to failure of the charging controller.
• 🔧 Unevenly twisted screws - can cause cracks in the body.
• 🧲 Lost magnets in the knife block - worsen the fixation of the grids.

After assembly, be sure to conduct a test:

1. Connect the razor to the charger and make sure the indicator is on.
2. Turn on the razor and check the smoothness of the knife block.
3. Listen to the sound – it should be smooth, without creaking or knocking.

⚠️ Attention: If the razor does not turn on after assembly, but the charging indicator is on, the problem may be in the wrong connection of the motor plume.

7.When disassembly is inappropriate: alternative solutions

Not all breakdowns require disassembly. Sometimes the problem is solved more easily.

Situations when you do not need to disassemble the razor:

• 🔋 Razor doesn't hold charge → Try "swinging" the battery: fully discharge and charge 3 times in a row.
• 💦 Bad shaving after washing. → Dry the razor in rice or with silica gel for 12–24 hours.
• 🔊 Weak vibration → It is possible that the economical mode is included (check in the instructions).

When is the best time to contact the service:

The cost of repairs in Xiaomi service centers:

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Before you go to the service, check if your razor warranty is valid. Even if the warranty card is lost, some service centers can restore information to the serial number.

FAQ: Frequent questions about the dismantling of Xiaomi razors