How to Open Xiaomi Hairdryer: Disassembly for Cleaning, Repair and Replacement of Parts

Xiaomi hair dryers are not just household appliances, but high-tech devices with intelligent control, a turbine engine and a system of protection against overheating. M300 Xiaomi Viomi V3) They require periodic maintenance, like cleaning filters, replacing the heating element, or repairing buttons. The main problem is that the manufacturer does not provide easy access to the insides, and careless disassembly can damage the circuit board or break wires.

In this article, you will find step-by-step instructions for opening a Xiaomi hair dryer, taking into account the features of different models, a list of necessary tools and critical nuances that are not mentioned in the standard manuals. We will also discuss which parts you can clean yourself, and in which cases you should contact the service center. If your hair dryer stops turning on, blows poorly or makes extraneous sounds, here you will learn how to start a diagnosis.

Preparation for disassembly: tools and security measures

Before you start opening the hair dryer, make sure you have everything you need. Lack of the right tools is the main cause of failure in self-repairing, for example, trying to tamper with a knife or screwdriver with an inappropriate sting often leads to chipping of the plastic or damage to the latches.

Here is the minimum set you will need:

• 🔧 A set of screwdrivers with cross-shaped and flat stingers (size) PH00 and SL1.5 — most universal).
• 📱 Plastic mediators (or guitar mediators) to disengage latches without scratches.
• 🧲 Magnetic mat or screw container – to avoid losing small details.
• 🔍 Loop or flashlight for inspection of small contacts and rations.
• 🧴 Isopropyl alcohol (90%+) and cotton swabs to clean contacts.

Also, prepare the workspace: the desk should be clean, well-lit and without static electricity (ideal use of an antistatic mat), disconnect the dryer from the network 24 hours before disassembly, this will discharge the capacitors and avoid electric shock.

⚠️ Note: If your Xiaomi hair dryer is warranty, self-disassembly will void it. Check the warranty period in the documents or through the Mi Home app before starting work.

Design analysis: how the Xiaomi hair dryer is built inside

Unlike traditional hair dryers, Xiaomi devices have a modular design with several key nodes:

• 🌀 Turbine engine (in models Supoon and Viomi) - provides high air flow speed (up to 22 m / s).
• 🔥 Heating element made of ceramics or nichrome - responsible for the air temperature.
• 📶 Control board with microcontroller, temperature sensors and buttons.
• 🔋 Battery (in wireless models) or network power supply.

Xiaomi hair dryers feature hidden latches and screws under decorative plugs. M300 Two screws are hidden under rubber legs on the handle, and in Viomi V3 — Trying to open the case without removing these screws will cause the clips to break.

If you're not sure about your hair dryer model, look for its name on the box or in the documents. Alternatively, look at Settings. → About the device (if the model supports connection to the Mi Home).

💡

Before disassembling, take a photo of the hair dryer from all sides – this will help to properly assemble it back, especially if you are doing repairs for the first time.

Step-by-step: how to open the Xiaomi hair dryer

Consider the universal disassembly algorithm on the example of the popular Xiaomi Supoon model M300. For other models, the steps may differ slightly (see table above).

Step 1: Removal of screws

1. Turn the hair dryer up and find rubber legs (usually 2-4). Carefully tuck them into a plastic mediator - there are screws hidden underneath them.

2 Unscrew the screws with a cruciate screwdriver PH00. In the Supoon model M300 4 of them: 2 under the legs and 2 under the decorative grille on the back panel.

Step 2: Separation of the hull

1. Take a plastic mediator and insert it into the gap between the front and rear of the housing (starting at the bottom edge).

2. Carefully drive the mediator along the seam, alternately snapping the clips, 6-8 of them, depending on the model. Don't put too much effort — if the case does not respond, check if all screws are removed.

Step 3: Unconnecting the plumes and wires

When you take off the back cover, you'll see the control board and the wires going to the engine and the heating element.

• 📸 Take a picture of all the plumes before disconnecting.
• 🔌 Carefully disconnect the connectors with a flat screwdriver, putting them on the side (do not pull the wires!).
• ⚠️ Do not touch the board contacts with your bare hands – static electricity can damage the chips.

In the Viomi model V3 The board is attached with additional screws - they also need to be unscrewed before removing it.

Cleaning and Diagnostics of Internal Details

After opening the building, you can:

• 🧹 Clean filters and turbines of dust and hair (use a soft brush or vacuum cleaner at minimum power).
• 🔥 Check the heating element for breaks or blackening (sign of burnout).
• 📊 Examine the board for bloated capacitors or oxidized contacts.

Do not use:

• 🚫 Water or liquid detergents - they can get on the charge.
• 🚫 Metal brushes – they scratch surfaces and damage contacts.
• 🚫 High-pressure compressed air – this can rip off small details.

If you find a blackened heating element, it needs to be replaced.In Xiaomi models, it is often integrated into a unit with a turbine, so buy a part with artwork. MDY-007 (supoon M300) or VFN-003 (for Viomi V3).

⚠️ Warning: If the dryer starts to work louder after cleaning or the smell of burning appears, immediately turn it off. This is a sign that dust has entered the bearings of the turbine or the heating element is damaged!

Typical breakdowns and how to fix them

Here are the most common problems of Xiaomi hair dryers and how to solve them:

If the problem is not solved on your own, contact the Xiaomi service center. In Russia, official partners of the company are in Moscow, St. Petersburg, Yekaterinburg and other major cities. ₽.

💡

90% of Xiaomi hair dryers are caused by clogging of the turbine or heating element. Regular cleaning (every 6 months) extends the life of the device by 2-3 times.

Hair dryer assembly after repair or cleaning

To collect the hair dryer need in reverse order, observing several rules:

1. Make sure all plumes are tightly connected – even a small backlash can cause you to lose contact.
2. Twisting the screws cross-cross to avoid skewing the body.
3. Before final assembly, turn on the dryer in the network (without closing the case) and check the operation of all buttons and modes.

If the dryer does not turn on after assembly or works unstablely, disassemble it again and check:

• 🔌 Correct connection of connectors (especially power and engine).
• 🔧 Whether all screws are tightened – sometimes poor contact is caused by vibration.
• 📱 The presence of foreign objects inside the body (cogs, pieces of plastic).

Once assembled successfully, test the dryer at all power and temperature modes, and if everything is working correctly, you can use the device as normal.

Where to buy spare parts for Xiaomi hair dryer

Original spare parts for Xiaomi hair dryers can be purchased:

• 🌍 Xiaomi’s official store (Accessories section) – quality guarantee, but limited range.
• 🛒 AliExpress is a big choice, but it's a risk of getting faked%+ and Russian reviews.
• 🔧 Service centers – sometimes sell used parts from disassembly.
• 🏬 Radio parts stores (for example, Chip and Deep) – for the purchase of universal components (resistors, capacitors).

Average prices for popular parts (2026):

• Heating element: 800-1500 ₽
• Turbine (engine): 1200–2500 ₽
• Management fee: 1500–3000 ₽
• Button panel: 300-600 ₽

When ordering on AliExpress, pay attention to art. numbers (see table above) and compatibility with your model. M300 Not suitable for Viomi V3 owing to different connectors.

FAQ: Frequent questions about the dismantling of the hair dryer Xiaomi