How to disassemble the Xiaomi Mijia camera: a step-by-step guide with photos and tips

Xiaomi Mijia cameras (including Mijia 360°, Mijia 1080p, Mijia 4K and others) are popular for their value for money, but over time even they require maintenance. Dust on the lens, dried lubrication in the steering mechanism or a faulty microphone are typical problems that can be solved on your own. However, disassembling the camera requires care: improper actions can lead to damage to the plumes, loss of the sealed body or failure of infrared sensors.

In this article, you will find detailed instructions for disassembling photos of key stages, a list of necessary tools and unique tips for working with fragile elements (for example, how to remove the lens without scratching or disconnect the power plume without damaging the contacts). We will also analyze the typical mistakes that beginners make, and give recommendations for reverse assembly. If your camera stops turning, creaks or does not focus, this guide will help diagnose and fix the problem.

Preparation for disassembly: tools and precautions

Before you start, make sure you have everything you need, and the lack of the right tools is the main cause of damage to the body or internal components, for example, trying to open the camera with a knife instead of a mediator is almost guaranteed to leave scratches on the plastic.

Here is the minimum set you will need:

• 🔧 Set of screwdrivers (cross-haul) PH00 and flat 1.5 mm for the screws of the body; hexagon 0.9 mm for some models)
• 📱 Plastic mediators (2-3 pc.) or guitar mediators for disconnecting latches
• 🧲 Magnetic mat or screw container (so as not to lose small details)
• 🔍 loope USB-microscope (to examine plumes and soldered contacts)
• 🧴 Isopropyl alcohol (90%+) and cotton swabs to clean contacts
• 📦 Silicone case or soft fabric (so as not to scratch the lens glass)

Also prepare the workplace: a clean desk with good lighting, no carpets (screws are easily lost in the pile). If you disassemble a camera with a rotary mechanism (for example, Mijia 360°), lock it in one position with tape, this will prevent accidental rotation during disassembly.

⚠️ Note: Some Xiaomi Mijia models (e.g. Mijia Mi Home Security Camera) 2K) They have hidden screws under stickers or rubber legs, and trying to open the case without removing them will cause the latch to break!

Step 1: Remove the back cover and battery

Start by turning off the camera from power and removing the memory card (if installed).

1. Removal of the rubber cap (if any): put it on the edge with a mediator, often with a screw hidden underneath.
2. Perimeter screws are unscrewed: In the Mijia 360° models, there are usually 4-6 (2 of them may be under a serial number sticker).
3. Latch disconnection: insert the mediator into the gap between the front and back of the body and gently guide the perimeter until you hear clicks.

When you take off the lid, you'll see the battery. Don't pull the wires, first disconnect the power connector by pulling the plastic tongue (not the wires themselves!). In some models, the battery is glued -- put it on the mediator, but don't use metal tools.

If the lid fails, check:

• 🔍 Are all screws unscrewed (sometimes one screw is hidden under a sticker with a QR-code).
• 🔧 Have you confused the type of screwdriver (screws in Xiaomi are often protected from the “fool” – for example, cross with a recess in the middle).
• 🧲 Are there any magnetic latches (found in models with a metal frame).

Step 2: Removal of motherboard and disconnection of plumes

When you take the lid off, you'll see the motherboard attached to 2 or 4 screws, so don't rush to take it out, you'll first disconnect all the plumes.

1. The camera plume (usually black, with a locker clip) lift the lock up, then carefully pull the plume out.
2. The microphone plume/dynamics (thin white or gray) is often brittle, pulling strictly perpendicular to the board.
3. IR plume (if any) can be soldered in night vision models - don't try to tear it off!

Once the plumes are unplugged, unscrew the circuit board screws and remove them. Note the component markings, which will help with the reverse assembly. For example, the Mijia 1080p board often has CAM (camera connector), MIC (microphone) and IR (infrared lighting).

⚠️ Attention: In models with PTZ-The engine (e.g. Mijia 360)°) There's a spring mechanism inside the case that can fire when you're not picking up the board properly!

Step 3: Disassembling the lens and cleaning the optics

If the problem is in the image quality (blurring, glare, dust), you have to get to the lens. In most Xiaomi Mijia models, it is fixed to a metal frame with threads. Don't try to twist it by force, first remove the fixing ring:

1. Tap the ring with a thin screwdriver (usually plastic, with two slots for a screwdriver).
2. Carefully twist the lens counterclockwise. If it doesn't give in, moisten the carving with alcohol and wait 5 minutes.
3. Use a soft brush (for example, for camera lenses) and a microfiber wipe to clean. Don't blow with your mouth - saliva leaves greasy spots!

If the lens has scratches, you can polish them with GOI paste, but it takes experience. For beginners, it is better to replace the whole lens - you can buy it on AliExpress (the article is usually indicated on the frame, for example, LM3N2 for Mijia 1080p).

Once cleaned, put the lens back together. Tighten the ring without fanaticism, because the compressed thread can warp the lens and degrade the image quality.

Step 4: Diagnostics and repairs of the rotary mechanism

If the Xiaomi Mijia 360° camera stops turning or creaks, the problem is most likely in the motor rod or gears of the mechanism.

1. Remove the top cover (usually it is held on 3-4 latches).
2. Disconnect the engine plume from the board.
3. Remove the rotation mechanism. Carefully examine the gears, if they're chipped or dried lubricant, they need to be cleaned.

For lubrication, use a silicone lubricant (like NYE 325A) -- it doesn't attract dust. Put it thinly on the gears and the motor shaft. Don't use WD-40 or litol -- it thickens over time and makes things worse.

If the engine does not respond to commands, check:

• 🔌 Integrity of the plume (often rubbed at the base).
• 🔋 Tension on contacts (should be) ~3.3V switch-on).
• ⚙️ Cog teeth – if they are erased, the mechanism will slip through.

💡

If the camera turns in jerks, try calibrating the engine through the engineering menu. To do this, connect the camera to the PC and send a command:

curl -X POST http://[IP_ cameras]/cgi-bin/ptzctrl.cgi?cmd=calibrate

Step 5: Checking the microphone and speaker

If the camera doesn't record sound or wheez, the problem could be the microphone or the speaker. In Xiaomi Mijia models, the microphone is usually soldered to a small board that connects to the main board via a plume.

1. Disconnect the microphone plume (it is often white).
2. Check the integrity of soldered contacts - if they are oxidized, clean them with alcohol.
3. For the test, connect an external microphone to the connector (if possible) or check the resistance with a multimeter (should be ~1-2 kΩ).

The speaker in Xiaomi Mijia is usually glue-based, to replace it:

1. Heat the body with a hair dryer (temperature 50-60 ° C) and put the speaker under the mediator.
2. Clear the landing site of glue residues.
3. The new speaker is glued to bilateral tape or heat glue.

⚠️ Note: In some models (such as the Mijia Mi Home Security Camera Pro), the microphone and speaker are combined into one module, and if you damage the plume during disassembly, the sound will disappear completely — even after you replace it!

Reverse Assembly and Testing

The camera should be assembled in reverse order, but there are a few critical points:

• 🔌 Plug the plumes last when the board is already fixed by the screws, which will prevent them from accidentally pulling out.
• 🔋 Connect the battery only after checking all contacts - a short circuit can burn the board.
• 📏 The tightening of the screws should be uniform. The skewed body can lead to jamming of the rotary mechanism.

After assembly, perform the test:

1. Connect the camera to the network and check the indication (should be a blue or green LED).
2. Run the recording and check the quality of the video (whether there is blurry or glare).
3. Check the turn (for 360° models) – the movement should be smooth, without creaking.
4. Turn on night mode and make sure the IR lighting is working (red diodes should be visible in the dark).

If something doesn’t work, take the camera apart again and check:

• 🔍 Are all plumes connected (especially camera and microphone plume).
• 🔌 Is there any distortion of the fee - it should lie flat, without gaps.
• 📶 Wi-Fi signal quality – weak signal can cause lags in the rotary mechanism.

💡

The most common build error is the wrong connection of the camera plume. If the image is missing or distorted, check if the connector is turned over (it has a tag key).

Frequent Questions (FAQ)