Xiaomi's smart outlets are some of the most popular devices in the Mi Home ecosystem, but even they're not immune to breakdowns. If your outlet stops turning on, warms up or doesn't respond to commands through the app, disassembly can be the first step to diagnosis. However, improper opening of the case often leads to latches damage, contact breaks or even short circuits.
In this article, we will learn how to carefully disassemble Mi Smart Plug, Aqara Smart Plug and other models of the brand without damaging the board or the case. You will learn what tools you need, how to avoid typical errors and what to do if the device does not turn on after disassembly, and also unique screw layouts for models from 2020 to 2026, which are not in the official instructions.
What Xiaomi outlets can be disassembled independently
Not all Xiaomi smart outlets are easy to disassemble at home, such as cast models (such as some versions of the Yeelight Smart Plug) that are almost impossible to disassemble without damage, but most Mi Smart Plug and Aqara devices have removable covers.
Here is a list of models that can be disassembled with minimal risk:
- ๐ Xiaomi Mi Smart Plug (ZNCZ02LM, ZNCZ04LM) โ cliff-plate USB-port.
- ๐ Xiaomi Mi Smart Plug Wi-Fi (ZNCZ12LM) โ supporter IEEE 802.11 b/g/n and energy monitoring.
- ๐ Aqara Smart Plug (SP-EUC01) โ Socket with support for Zigbee 3.0 and protection against overheating.
- ๐ Xiaomi Mi Smart Plug Mini (ZNCZ03LM) โ compact USB, but with disassembly.
If your model is not included in the list, check for screws or latches on the body. Models labeled ZNDM (for example, for the European market) often have a non-shattered body.
โ ๏ธ Note: Xiaomi outlets with certification IP44 (Splash protection) usually have a sealed case, disassembling them will void the warranty and may cause moisture to enter the board.
Disassembly tools: what you will need
For careful disassembly of the Xiaomi smart outlet, you will need a minimum set of tools. The main thing is not to use improvised means (knives, blades) that can scratch the case or damage the board.
Optimal kit:
- ๐ง The screwdriver. PH0 or PH1 (most screws).
- ๐ง Plastic mediator or guitar mediator (to separate latch).
- ๐ง Tweezers with thin ends (for extraction of small details).
- ๐ง Multimeter (to check the voltage after disassembly).
- ๐ง Silicone mat or soft fabric (so as not to scratch the body).
If the screws in your model have a non-standard head (for example, Torx T5 or Tri-Wing), you will need the appropriate bits.
| Model socket | Type of screw | Number of screws | Latching presence |
|---|---|---|---|
| Mi Smart Plug (ZNCZ02LM) | PH0 | 2 | Yes (4 latches) |
| Aqara Smart Plug (SP-EUC01) | Torx T5 | 3 | Yes (2 latches) |
| Mi Smart Plug Mini (ZNCZ03LM) | PH1 | 1 | No. |
| Yeelight Smart Plug (YLKG07YL) | Cast case | โ | No. |
โ ๏ธ Attention: Aqara outlets often use one-way screws. When unscrewing, press the screwdriver strictly perpendicular, or you will tear the slits.
Step-by-step: how to disassemble the Xiaomi outlet
The disassembly process varies from model to model, but the overall layout is the same for most devices, and below is a generic nuanced instruction for popular models.
Step 1. Turn off the power.
Pull the power outlet out of the mains and wait 5-10 minutes. The capacitors on the board can store charge, which will lead to an electric shock when touched.
Step 2. Remove the top cover.
- ๐ If you have a sleeve, then you should take it away (see the table above).
- ๐ If there are no screws, insert a plastic mediator into the gap between the upper and lower part of the body and carefully lead around the perimeter, disconnecting the latches.
- ๐ For Aqara models, start with the side opposite the indicator โ there the latches are weaker.
Step 3. Remove the charge
Once you remove the lid, you'll see a circuit board with a chip, relay and contacts. Carefully tweez it with a tweezer or a screwdriver, pre-picturing the location of the wires (if any). In power-monitoring models (ZNCZ12LM), the board is attached to 2-3 small screws - don't lose them!
Power outlet disconnected|Tools prepared|Photos of the case and board taken|Checked the absence of cracks on the body-->
Step 4: Review the damage charge
Look for:
- ๐ฅ Darkened or bloated capacitors.
- ๐ฅ Burnt tracks near the relay (frequent cause of malfunction).
- ๐ฅ Oxidized contacts (green coating).
- ๐ฅ Traces of moisture (white plaque on chips).
What to do if the screw does not unscrew?
Typical problems after disassembly and how to fix them
Even if you carefully disassemble the socket, after assembly, there may be problems.
| Problem. | Possible cause | Decision |
|---|---|---|
| The plug won't turn on. | Charges damaged or contact broken | Check the fork to relay chain with a multimeter. |
| Wi-Fi/connection is not working | The settings are lost or the antenna is damaged. | Reset the settings with the Reset button (hold 10 seconds). |
| Heating the case | Short circuit or overload | Check the resistance between the fork contacts (should be โฅ200 kฮฉ). |
| The indicator doesn't burn | The LED burned out or the resistor fell off | Replace the LED (nominal is indicated on the board) or solder the resistor. |
If the socket is not detected in the Mi Home application after assembly:
- Hold the reset button for 15-20 seconds until the indicator flashes.
- Restart the router (sometimes the device does not receive IP).
- Try to connect to the outlet directly through AP Mode (Creating Your Network) Xiaomi_XXXX).
๐ก
If the socket is working after dismantling, but periodically shuts down, check the quality of the soldering relay. Often the problem lies in microcracks on the contacts, which are visible only under the magnifier.
How to avoid mistakes: tips from the masters
Experienced Xiaomi-technique repairmen share life hacks that will save time and nerves:
- ๐ธ Take a picture of each step, especially the location of the wires and chips, and this will help with the reverse assembly.
- ๐งฒ Use a magnetic screw mat โ they are easily lost.
- ๐ฅ Don't solder eye wires - the polarity is important in smart outlets. The board usually has L (phase), N (zero) markings on it).
- ๐ ๏ธ Don't push the body when you build it, the latches should come in easily. If you need to apply force, check if there's a wire between the parts of the case.
Another important thing is that in power-monitoring outlets like the ZNCZ12LM, the board has two layers, and when you disassemble, don't pull on the top layer, because there are thin wires in the current sensor underneath.
๐ก
If the socket does not turn on after disassembly, but the indicator is on, it is a problem in the relay. It can be replaced with a similar one (for example, Songle SRD-05VDC-SL-C), but a soldering iron with a thin sting (0.5-1 mm) is required.
When the Disassembly Will Not Help: Alternative Solutions
Not all breakages of Xiaomi smart outlets can be eliminated at home. Here are the cases when it is better to contact the service or buy a new outlet:
- โก The control chip burned (usually the marking begins with a ESP or BL). Replacement requires a programmer.
- โก Damaged Wi-Fi module (antenna or chip) RTL8710). Repairs will cost more than a new socket.
- โก The case melted because of a short circuit, and it's dangerous to use sockets like this.
- โก The sensor is calibrated in the factory, and self-replacement does not guarantee accuracy.
If the outlet is guaranteed, the disassembly will cancel it, in which case it is better to contact the authorized service center Xiaomi. mi.com/ru/service.
The alternative to repairing is buying a new outlet, and the prices of popular models in 2026 are:
- Mi Smart Plug (ZNCZ04LM) โ 800 โฝ.
- Aqara Smart Plug (SP-EUC01) โ 1200 โฝ.
- Yeelight Smart Plug (YLKG08YL) โ 1,500 โฝ (HomeKit-enabled).