How to disassemble the Xiaomi electric razor: detailed instructions with photos and tips

Xiaomi electric shavers are popular devices that combine affordable price and high quality, but even the most reliable equipment requires maintenance: over time, the knives become blunt, dirt accumulates inside, and the engine begins to work intermittently. Disassembling a razor may be necessary for deep cleaning, knife replacement, machinery lubrication, or electronics repair, but before you start to pick up a screwdriver, it is important to understand the design of Xiaomi razors (especially Mi Electric Shaver models). S500/S501, Mijia T300/T500) peculiarities.

In this article, you will find a step-by-step guide with photos, video examples and disassembly tips, which tools you will need, how to avoid common mistakes (such as damage to plastic latches), and what to do if the razor stops working after dismantling, and you will also learn when to contact the service center, and when you can manage yourself.

⚠️ Warning: Disassembly of Xiaomi’s electric razor will void warranty (if it’s still valid).If the device is warranty, contact the official service first. Also remember that improper disassembly can lead to short circuit or engine failure.

1. Disassembly preparation: safety tools and measures

Before you start, make sure you have everything you need. Most Xiaomi models (e.g., Xiaomi models, S500 or T300) are disassembled using standard tools, but some parts (for example, the fastening of the knife unit) may require special devices.

Here is the minimum set of tools you will need:

• ✅ Flat screwdriver (preferably with a thin sting, for example, for watches)
• ✅ Cross screwdriver (size) PH0 or PH00)
• ✅ Plastic mediator (or guitar mediator) to disconnect latches
• ✅ Tweezers (to extract small details)
• ✅ Silicone mat or soft fabric (so as not to scratch the body)
• ✅ Loop or flashlight (for inspection of small details)
• ✅ Lubricant for electric shavers (for example, Xiaomi Shaver Lubricant or analogue)

Also, prepare the screws and parts containers, which are easy to lose, and take a picture of each stage of the dismantling, so that you can assemble the razor correctly.

⚠️ Warning: Never disassemble a razor connected to the network or with an unused battery! be sure to discharge the battery to 0% or remove it (if the model allows.

Disassembly of the body: remove the back cover and battery

So, to start with, the simplest thing is to remove the back cover, and most Xiaomi models have it mounted on latches and one or two screws, and here's how to do this.

1. Turn the razor over and find the screws under the rubber legs (if any). Carefully tuck the legs with a flat screwdriver and unscrew the screws.
2. Put a plastic mediator in the gap between the top and bottom of the case. Keep it around the perimeter carefully, disengaging the latches. Don't force it. The plastic is fragile!
3. Once all the latches are snapped, remove the back cover, and underneath it you'll see the battery and the circuit board.

In models S500/S501 the battery is soldered to the board, and in T300/T500 — If you need to replace the battery, the first one will need a soldering iron, the second one will need to disconnect the train.

In soldered-battery models (S500, Mi Electric Shaver 2) trying to disconnect it without soldering experience can damage the board. If the purpose of the dismantling is to replace the battery, you better contact the service.

Make sure the razor is off and discharged|

Remove the rubber legs (if any)|

Unscrew all screws on the back cover|

Use a plastic mediator for latches|

Photograph the location of the details-->

3. Removal of the knife block and engine

The knife unit is the most important and vulnerable part of the razor, and in Xiaomi models, it is usually attached to the body with two screws and fixed with plastic guides.

1. Unscrew the screws holding the knife block (usually they are hidden under a decorative pad).
2. Carefully pull the block up. If it doesn't lend itself, check if there are any hidden latches on the sides.
3. Disconnect the plume connecting the block to the control board. Be careful - the plumes in Xiaomi are very thin!

Under the knife block is the engine, which is mounted on two screws in most models, and connected to the board via a connector to remove it.

• ⚙️ Unscrew the screws of the attachment.
• ⚡ Disconnect the power connector.
• 🔧 Carefully tuck the engine with a flat screwdriver (it can sit on a sealant).

If the engine is not rotating or makes extraneous sounds, the problem may be:

• 🔋 Worn brushes (in collector engines).
• 🧲 Rotor pollution.
• 🔌 Winding break (checked by multimeter).

⚠️ Warning: If the engine is soldered to the board (as in the Mi Electric Shaver 2), do not try to solder it without experience!

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If the knife block is jammed and it is not removed, try to slightly heat the body with a hairdryer (no higher than 60).°C) This will help soften the plastic and loosen the latches.

4. Cleaning and lubrication of the mechanism: how to prolong the life of a razor

One of the main reasons for disassembly is deep cleaning, and over time, hairs, dust and lubricant residue accumulate between the knives, leading to:

• 🔊 Increased noise during operation.
• ⚡ Increased battery consumption.
• ❌ Uneven shaving.

You'll need to clean:

• 🧹 Soft brush (for example, toothbrush).
• 💧 Isopropyl alcohol (70% or higher).
• 🧴 Cotton swabs.
• 🛢️ Electric shavers lubricant.

Step-by-step cleaning:

1. Remove the knife block (as described above).
2. Wash the knives under warm water (if the model supports wet cleaning) or wipe with alcohol.
3. Brush remove dirt from the grooves and gears.
4. Apply 1-2 drops of lubricant to moving parts (don’t overdo it!).
5. Collect the block and check the smoothness of the move.

⚠️ Don't use it. WD-40 They can damage plastic and rubber seals. Only specialized razor lubricants (e.g. Xiaomi Shaver Lubricant or Remington).

5. Typical breakdowns and how to fix them

If Xiaomi's razor stopped working, the causes can range from simple pollution to electronics failure, and here are the most common problems and ways to fix them:

If the problem is electronics (for example, it doesn’t charge or respond to a button), check:

• 🔌 Charging contacts -- often they're oxidized. Clean them with a lasticle or alcohol.
• 🔋 Battery: Measure the voltage with a multimeter. If it's lower. 3.0V, battery to be replaced.
• 📱 Control board - inspect for burned elements (blackened resistors, bloated capacitors).

Xiaomi Mi Electric Shaver 2 and S500 The board often fails because of moisture, and if you see any corrosion on the board, you'll have to replace it, and it'll cost more to repair than a new razor.

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If the razor doesn't turn on after falling, first check the integrity of the plumes and contacts. Often the problem lies in the cliff of thin wires connecting the power button to the board.

6.Assembly razor: how to prevent mistakes

Putting a razor together after a disassembly is a task no less important than disassembling it. The rule of thumb is that all the parts must fall into place effortlessly. If something doesn't fit, you missed a step or connected the parts incorrectly.

The order of assembly (on the example of Mijia) T300):

1. Put the engine in place and secure the screws.
2. Connect the knife block plume to the board.
3. Carefully insert the knife block into the slots, making sure that he sat down to the point.
4. Turn the locks on the block (do not pull!).
5. Lay the battery and plug it in (or solder if the model is S500).
6. Close the back cover by snapping all the locks.
7. Twisting the screws on the back.

⚠️ Assembly errors that lead to breakdown:

• 🔧 Twisted screws → cracks.
• 🔌 Unconnected plume → razor's out.
• 🔋 Incorrectly installed battery → short-circuit.
• ⚙️ Contaminated contacts → squash.

After assembly, be sure to check:

• 🔄 Smoothness of the knives (they should rotate without jamming).
• 🔋 Charging (connect the razor to the network for 30 minutes).
• 🔊 Noise level (extraneous sounds indicate improper assembly).

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If the razor gets louder after assembly, chances are you didn't lubricate the mechanism well enough or you didn't fit the knife block correctly. Disassemble and repeat the procedure.

7.When disassembly does not help: cases for a service center

Not all breakdowns can be repaired on your own, but here are the situations in which you can contact the service:

• 🔥 The control board burned (blackened elements are visible).
• 💥 Battery swelling (risk of fire!).
• 🔧 Broken plastic knife block guides.
• 📉 The engine does not show signs of life (no sound, no heat).
• 💧 Water gets inside (even if the razor supports wet cleaning).

It is also worth assessing the economic feasibility of repairs, such as replacing the board in Xiaomi. S500 It can cost 70-80% of the price of a new razor, and in such cases it is more logical to buy a new model.

If you still decide to give the razor for repair, choose official Xiaomi service centers or proven workshops. The cost of diagnosis is usually 300-500 rubles, and repairs - from 800 to 2500 rubles depending on the breakdown.

⚠️ Warning: In informal workshops, unoriginal parts (such as smaller batteries) are often installed, specify which parts will be used and require a guarantee to work.

8.Others to disassemble: how to extend the life of a razor without repair

In many cases, you can solve problems with the Xiaomi razor without opening the body. Here's what to try before you take on the screwdriver:

• 🔄 Resetting (if the model supports): Press the power button for 10-15 seconds.
• 🔋 Battery calibration: fully discharge and charge the britto 2-3 times in a row.
• 🧼 Cleaning without disassembly: Use a brush from the kit. Wash the knives underwater (if the model is waterproof). Use a cleaning spray (Xiaomi Cleaning Spray).
• 🛢️ Lubricant without disassembly: apply 1 drop of oil to the knives and turn on the brit for 10 seconds.

If the britwheel is getting worse, try sharpening your knives with a special device (such as the Xiaomi Shaver Sharpener) or in a workshop.

Please also note the storage conditions:

• 🌡️ Do not leave the brit in the bathroom (high humidity accelerates corrosion).
• 🔋 Keep it with a discharged battery (if you don’t use it for more than a month).
• 🧴 Regularly lubricate (every 3-6 months).

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Most of the breakdowns of Xiaomi electric shavers are due to non-compliance with operating rules: no lubrication, wet storage, falls. Regular care prolongs the life of the device by 2-3 times.

FAQ: Frequent questions about the dismantling of electric shavers Xiaomi