Why to disassemble Xiaomi electric razor and when it really needs to
Xiaomi electric shavers are some of the most popular on the market due to their combination of price, quality and technology, but even the most reliable device requires maintenance over time: cleaning, changing knives or repairing.
First, for deep cleaning, hairs, dust and shaving cream residues accumulate between the blades and inside the body, which cannot always be cleaned out in standard ways, and second, for replacing worn-out knives, even the strongest blades become blunt after 1.5 to 2 years of active use, and finally, disassembly may be necessary for breakdowns: a broken motor, charging problems or mechanical damage.
Not all Xiaomi models are designed to be self-repaired, however, such as budget versions often have a non-removable body, and premium versions have a modular design with replaceable blocks. Before you start a screwdriver, make sure that your model is disassembled (we will discuss this below).
It's important to understand that disassembling a razor deprives you of Xiaomi's warranty if it's still in operation, and there's a risk of damaging fragile parts like plastic latches or flexible plumes. If you're not sure about yourself, you should contact a service center.
What Xiaomi models can be disassembled independently
Not all Xiaomi electric shavers are equally repairable, here is a list of models that can be disassembled at home (with reservations):
- 🔧 Xiaomi Mi Electric Shaver S500/S501 — classic mesh razor with removable knife unit and partially collapsible body.
- 🔧 Xiaomi Mijia Electric Shaver T500/T507 — More modern versions with improved ergonomics and modular design.
- 🔧 Xiaomi Mi Electric Shaver 2 – budget model, but with the ability to replace knives and clean the internal mechanism.
- ⚠️ Xiaomi Mi Electric Shaver Lite – disassembly is possible, but the body is glued together, which complicates the process.
- ❌ Xiaomi Mi Electric Shaver 1C/1S — non-disruptive models intended for recycling after wear.
If your model is not on the list, check it on Xiaomi's website or in the documentation. Pay attention to the type of knives attachment: in some razors, they are fixed with latches, in others, with special screws.
It's also worth considering that even collapsible models can have hidden latches or glue in some areas. T500 the top cover is attached to plastic clips, which are easy to break when you open carelessly.
Preparation for disassembly: tools and security measures
Before you start, prepare everything you need.
- 🔨 Screwdriver kit: cross-haired (PH00 or PH0) and flat (1-2 mm) for the screws of the body.
- 🔧 Plastic mediator or guitar mediator - for careful liding.
- 🧲 Magnetic mat or container – to avoid losing small screws.
- 📸 Smartphone for photography – capture each step so as not to confuse details during assembly.
- 🧴 Isopropyl alcohol (70%+) — Cleaning contacts and fees.
- 🧤 Rubber gloves - protection from cuts on the sharp edges of knives.
Also prepare the workplace: a table with good lighting, no carpets (so as not to lose details) and with access to the socket (if you need to test the razor after disassembly).
⚠️ Warning: Never disassemble the Xiaomi Britvu immediately after use - let it cool for 10-15 minutes.
If your razor is warranty, check to see if the disassembly will violate its terms. Xiaomi usually only retains the warranty for service repairs. Also note that some models (such as the Mi Electric Shaver) 1C) have seals on the screws - their damage automatically voids the warranty.
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Before disassembly, completely discharge the razor - this will eliminate the risk of short circuit in case of accidental grazing of the board.
Step-by-step: how to disassemble the Xiaomi electric razor
Let’s look at the Xiaomi Mi Electric Shaver model. S500. For other collapsible models, the steps will be similar, but the mounting details may differ.
Step 1: Removal of the knife block
1. Turn the razor upside down with knives.
2.Push the lock (usually located on the side or bottom of the knife block) and pull the block over yourself.
3. If the lock is missing, try turning the block counterclockwise (some models use threaded mount).
Inside, you'll see a metal plate with springs -- this is a shock-absorbing system. Carefully put the knife block aside without touching the blades with your bare hands.
Step 2: Disassembly of the hull
1. Turn over the razor and find the screws on the bottom cover (usually 2-4 pieces under the cross screwdriver).
2. Unscrew the screws and lay them on the magnetic mat.
3. Take a plastic pickup and gently tuck the lid around the perimeter. Be careful, there may be hidden latches inside!
If the lid doesn't lend itself, don't force it. You may have missed the screw or the latch is locked. T500 Sometimes there are additional screws under the stickers.
Step 3: Extract the internal components
After removing the cover, you will see:
- 🔋 Battery (usually lithium-ion, 3.7V).
- 🖥️ Printed circuit board with control chip.
- ⚙️ Motor with gearbox.
Unplug the plumes (if any) and carefully remove the board. In some models, the board is mounted on the latches — don't pull it by force, but first inspect the mounts.
The motor is usually fixed with 1-2 screws. Unscrew them and pull out the mechanism. Notice the gears of the gearbox, they can fall out if you don't handle them carefully.
Check the integrity of all plumes and contacts
Make sure the screws are not mixed up (they may vary in length)
Clean knives and internal parts from hair and dust
Lubricate moving parts with silicone lubrication (if required)-->
Step 4: Cleaning and Diagnostics
Now that the razor is disassembled, you can start cleaning and repairing:
- 🧹 Blow the body with compressed air (for example, a canister for cleaning equipment).
- 🧽 Wipe knives and internal parts with a cotton swab soaked in isopropyl alcohol.
- 🔍 Check the integrity of the motor brushes (if the razor is not working well, they could wear out).
- 🔋 Measure the battery voltage with a multimeter (should be close to the 3.7V).
If faults are detected (such as oxidized contacts or broken gears), they must be fixed before assembly. Xiaomi parts can be found on AliExpress or in specialty stores.
Typical Disassembly Problems and How to Avoid Them
Even with a careful disassembly, you can encounter difficulties, and here are the most common mistakes and ways to prevent them:
| Problem. | Reason. | Decision |
|---|---|---|
| Broken plastic latches | Excessive force when opening the body | Use a plastic mediator and warm the body with a hairdryer (up to 50).°C) for softening plastics |
| Lost screws or springs | Lack of organizer for small details | Work on a bright surface and take pictures of each step |
| It doesn't work after assembly. | Unconnected plumes or contacts | Check all connections with a multimeter in vertebrae mode |
| Knives are not fixed. | Deformation of springs or guides | Replace the springs or straighten them with pliers |
Another common problem is the oxidation of the battery contacts, so if the razor doesn't turn on or discharges quickly, clean the contacts with alcohol and eraser (for mechanical cleaning), in extreme cases, you can clean them carefully with a knife.
⚠️ Attention: If the razor begins to vibrate more strongly or make extraneous sounds after disassembly, the balance of the knife unit is most likely disturbed.
If you've replaced the battery, but the razor still doesn't hold the charge, the problem may be the charge controller on the board, and repairing it requires soldering skills and is best trusted by a professional.
What to do if you can’t pull the screw?
Assembly of electric shavers Xiaomi: step-by-step algorithm
Making a razor is often harder than disassembling it. Follow this algorithm to avoid mistakes:
- Check all details for damage, especially carefully inspect the plumes and contacts.
- Put the motor and gearbox in place with the screws, make sure the gears match.
- Connect the board, starting with the battery. The polarity should match (plus to plus, minus to minus).
- Close the body, pressing the lid evenly until the snap of the latches. Don't apply force to one place.
- Set up a knife unit and check its fixation. It should sit tight, without backlash.
- Test the razor idle (without hair), then with a small load.
After assembly, turn on the razor and let it work for 1-2 minutes.
- 🔊 Sound – there should be no squeaking or knocking.
- 🌀 Vibration – It should be uniform.
- 🔋 Charging – the indicator should show the charging process.
If something goes wrong, re-arrange the razor and check all the connections, most often due to loosely fitting contacts or skewed knife unit.
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Always collect the razor in reverse order, and if you've been photographing the process, use these pictures as instructions.
When disassembly will not help: signs of malfunctions requiring service
Not all Xiaomi electric shavers can be repaired on your own, but here are some signs you should contact the service center:
- 🔥 The smell of the burner or melted parts on the board - this indicates a short circuit.
- 💥 Cracks on the body near the engine - possible mechanical damage to internal components.
- 🔄 The razor turns on, but the knives don't rotate - the problem may be in the burnt-out motor winding.
- 📉 Battery does not hold charge even after replacement - the power controller is faulty.
- 🔌 Charging does not work with a serviceable battery - the connector or power chain is damaged.
It is also worth contacting specialists if you are not sure about your soldering skills, for example, replacing the chip on the board or repairing the motor winding requires experience and special equipment.
In Moscow and St. Petersburg, official Xiaomi service centers can be found on the Mi Service website. In the regions, contact authorized workshops. The average cost of repairing electric shavers is from 800 to 2,500 rubles, depending on the breakdown.