Modern motorists increasingly choose Xiaomi products for their stylish design and technology, but even high-quality car chargers sometimes fail. USB-In such situations, there is a pressing question of how to carefully disassemble the gadget so as not to damage it completely. Understanding the internal design allows not only to save on the purchase of a new accessory, but also to extend the life of the already existing one.
The dismantling process requires some preparation and care, as the case is often assembled without visible screws. You will need not only a basic set of tools, but also an understanding of the principles of how the electronics work inside the compact case. It is important to note that improper disassembly can lead to leakage or damage to delicate components of the board. In this article, we will look in detail at the steps of opening popular models such as the Xiaomi Car Charger Pro and standard versions with a dual port.
Before we go into action, we need to make sure that the device really can't be repaired or repaired more easily without opening. Sometimes the problem is the banal contamination of the port, which can be cleaned with compressed air. But if you need to change the fuse or solder the contacts, then you need to do it in a comprehensive manner. Let's move on to the preparation of the workplace and the necessary tools for safe operation.
⚠️ Warning: Before starting any work, be sure to remove the charger from the lighter of the car. Working with an electric circuit under voltage is strictly prohibited and can lead to a short circuit or electric shock.
Tools and workplace preparation required
To successfully and safely perform the procedure, you will need a specialized toolkit that avoids damage to plastic and internal components.The main enemy when disassembling is force, so it is important to use the right tools to open. Xiaomi plastic cases are often fastened with tight latches that are easy to break with a metal screwdriver.
Space organization is key, because inside the device are small parts, such as springs and screws, that are easy to lose. It is recommended to use a magnetic mat or containers to sort elements. It is also important to ensure good lighting of the work area to see microscopic contacts and soldering points.
- 🛠️ A set of plastic mediators or blades for opening the case of electronics.
- 🔧 Thin slat screwdriver and cross sized screwdriver PH00 or PH000.
- 🔦 Powerful. LED-lamp or table lamp for detailed inspection of the insides.
- 🧲 Magnetic tray or several small tanks for sorting screws and parts.
Special attention should be paid to the cleanliness of the hands and tools, as greasy spots can make it difficult to glue the body back together or cause the board to oxidize. If you plan to solder the elements, you will also need a soldering iron with a thin sting and solder. Quality training reduces the risk of accidental damage and makes the repair process more predictable and quick.
Design features of Xiaomi chargers
Xiaomi engineers are very aesthetically focused, so their charging cases are often made in the form of a monolithic unit with no visible fasteners. Inside, there is usually a compact circuit board with a charging controller that regulates voltage and current. Understanding how the power circuit is arranged will help you quickly find the cause of the malfunction.
Most models, including the Mijia Car Charger, have a dual body design: an outer decorative shell and an inner supporting frame. Parts can be connected using ultrasonic welding, which makes disassembly much more difficult, and in such cases you have to take the risk of carefully separating the layers, knowing that it will be difficult to assemble everything back in perfect condition.
Internal structure
It is important to distinguish between collapsible and non-collapsible models. In the former, screws can be hidden under decorative plugs or stickers. Second, the connection is made by pressing. The latter often require heating the case or using a thin blade to cut internal plastic jumpers. The tightness in such devices is usually low, so moisture entering is a common cause of failure.
| Model of the device | Type of hull attachment | Spinning | Difficulty disassembling |
|---|---|---|---|
| Xiaomi Car Charger Pro | Latches + glue | Hidden under the end | Medium |
| Mijia Dual USB | Ultrasonic welding | Absent. | Tall. |
| ZMI Car Charger | Plastic latches | There's one inside. | Low. |
| Xiaomi 36W Fast | Combined | Under a rubber ring | Medium |
Step-by-step: how to open the body without damage
Start by looking at the outside of the device, looking for any holes, crevices, or places where parts of the body can dock, often hiding under rubber linings or in recesses near the bottom of the device. USB-Use a magnifying glass for a detailed inspection so you don't miss the hidden fastener.
If you don't have any visible screws, you probably have the body on the latches, and you take a plastic pickup, and you walk gently through the junction of the halves of the body, trying to get into the gap, and you move around, gradually increasing the gap, and you don't try to open the device on one side, because that will cause the plastic locks to break.
☑️ Pre-mortem checks
In cases where the case is not amenable, you can try to warm the joints slightly with a hair dryer at low temperature to soften the glue or plastic. Act slowly and without sharp jerks. Once the latches click, split the halves and remove the inner board. The main thing is not to damage the wires connecting the buttons or indicators to the main circuit.
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Use a suction cup for your smartphone screen to create initial body tension – this will make it easier to insert a plastic blade into the joint.
Diagnostics of internal components and search for faults
Once the board is successfully retrieved, you will be able to access the main components of the device, and first visually inspect the board for blackening, swollen capacitors, or disconnected contacts, often caused by a burnt fuse that can be easily replaced with a similar one.
Notice the soldering site of the central contact that is inserted into the lighter, and because of the constant vibration and temperature changes, the soldering can crack, causing the contact to disappear, in which case you need to carefully clean the place and apply a new solder layer. Also check integrity USB-Ports – their undermining is a frequent problem.
- 🔍 Check the fuse for thread integrity or ring it with a multimeter.
- ⚡ Inspect the capacitors for bloating of the upper cover or leaking electrolyte.
- 🔌 Move it. USB-tweezers - they should not hang out or have a backlash.
- 🌡️ Look for traces of overheating on the charging controller chips.
⚠️ Warning: If you find a swollen capacitor or traces of burns on the board, further operation of the device without replacing the elements can be dangerous.
Assembly of the device and check of performance
After diagnostic work and replacement of faulty elements, you need to assemble the device in reverse order, make sure that all the plumes and wires are packed into their channels and will not be clamped with the body. When assembly, it is important to correctly combine the guide grooves so that the halves meet without gaps.
If the case was held on the screws, twist them evenly, without undue effort, so as not to break the thread in the plastic. If you use glue or welding, you can gently paste the joint with a thin layer of special glue for electronics or use thermal shrinkage for fixation. The main thing is to provide a reliable connection that will withstand vibration in the car.
Before final installation in the car, test the battery. Connect the charge to a 12V power source (you can use a power supply or battery) and check for voltage on the vehicle. USB-If you're using a multimeter or a phone, if the device is working properly, you can complete the assembly and put it in a regular place.
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A high-quality assembly guarantees not only the appearance, but also safety - a poorly assembled body can lead to a short circuit inside the car.