ASUS Notebook Adapter Disassembly Drawing
Friends who often use ASUS laptops believe that they know very well about ASUS power adapter. Out of their understanding of trademark, ASUS power adapter is also easy to recognize. So we are no stranger to ASUS power adapter. Although I know, how to disassemble ASUS power adapter is also a problem. Everyone can see that there are no screws on its surface, so friends who want to learn to disassemble ASUS power adapter need to learn the following methods carefully. Today, Xiaobian will tell you about the disassembly methods and steps of ASUS power adapter and how to disassemble ASUS power adapter. Please go on to understand.
ASUS power adapterHow to remove ASUS power adapter
The upper and lower covers of laptop power adapter are injection molded or bonded with strong glue without any screws, so they can only be cracked by violence. However, as long as the method is appropriate, the disassembled power adapter can be completely restored to its original state. Without careful observation, there is almost no sign of disassembly. How to disassemble ASUS power adapter, place the transverse side of the power adapter on white paper, cut along the gap between the upper and lower covers of the power adapter with the blade of an electrician, and then knock the back of the electrician knife with a hammer to cut the electrician knife between the upper and lower covers of the adapter. At different positions of the gap between the upper and lower covers of the adapter, use the tip of the electrician's knife to move along the gap. When a part of the upper and lower covers first cracks, go deep into the tip, and then slowly separate the upper and lower covers of the adapter. Then open the power adapter of the shell. You can see that there is a copper shielding layer outside the adapter circuit. Cut the adhesive tape on the shielding layer with an art knife, and then weld the two solder joints between the shielding layer and the internal circuit board with an electric soldering iron to remove the shielding layer. There is also a thick hard plastic film between the shielding layer and the circuit board. After cutting it with an art knife, you can see the "true face of Lushan" of the circuit board. The above is the detailed introduction of how to disassemble ASUS power adapter.
ASUS power adapter disassembly method and stepsASUS power adapterFour steps to disassemble ASUS power adapter
1 The upper and lower covers of laptop power adapter are injection molded or bonded with strong glue without any screws, so they can only be cracked by violence. However, as long as the method is appropriate, the disassembled power adapter can be completely restored to its original state. Without careful observation, there is almost no sign of disassembly.
2 Place the transverse side of the power adapter on the white paper, cut along the gap between the upper and lower covers of the power adapter with the blade of the electrician knife, and then knock the back of the electrician knife with a hammer to cut the electrician knife between the upper and lower covers of the adapter. At different positions of the gap between the upper and lower covers of the adapter, use the tip of the electrician's knife to move along the gap. When a part of the upper and lower covers first cracks, go deep into the tip, and then slowly separate the upper and lower covers of the adapter.
3 Then open the power adapter of the shell. You can see that there is a copper shielding layer outside the adapter circuit. Cut the adhesive tape on the shielding layer with an art knife, and then weld the two solder joints between the shielding layer and the internal circuit board with an electric soldering iron to remove the shielding layer.4 There is also a thick hard plastic film between the shielding layer and the circuit board, which can be cut with an art knife.After these four steps are completed, you can repair the power adapter. I hope you can understand how to disassemble the power adapter through the introduction of this article, and then apply it in practice.
Detailed disassembly procedure of power adapter
The power adapters of notebook computers are fully sealed and small in size, and their power consumption is generally up to 35W 90W, so the internal temperature is high. Especially in hot summer, touching the power adapter at work will feel hot. Because of this, the failure rate of power adapter is relatively high compared with other parts of notebook computer. After the power adapter is damaged, it costs hundreds of yuan to buy a new one, and more than 100 yuan to go to the second-hand market. In fact, many power adapters are not seriously damaged. Users with some circuit knowledge can try to repair them
Tools / raw materialsElectrician knife, hammer, screwdriver, electric soldering iron, art knife, etc.Steps / methods
The upper and lower covers of laptop power adapter are injection molded or bonded with strong glue without any screws, so they can only be cracked by violence. However, as long as the method is appropriate, the disassembled power adapter can be completely restored to its original state. Without careful observation, there is almost no sign of disassembly.
2 place the transverse side of the power adapter on the white paper, cut along the gap between the upper and lower covers of the power adapter with the blade of the electrician knife, and then knock the back of the electrician knife with a hammer (as shown in Figure 1) to cut the electrician knife between the upper and lower covers of the adapter. At different positions of the gap between the upper and lower covers of the adapter, use the tip of the electrician's knife to move along the gap. When a part of the upper and lower covers first cracks, go deep into the tip, and then slowly separate the upper and lower covers of the adapter.
3 then open the power adapter of the shell, you can see that there is a copper shielding layer outside the adapter circuit, cut the adhesive tape on the shielding layer with an art knife, and then weld the two solder joints connected between the shielding layer and the internal circuit board with an electric soldering iron (see the figure below), so as to remove the shielding layer.4. There is also a thick hard plastic film between the shielding layer and the circuit board (as shown in Figure 4). After cutting it with an art knife, you can see the "true face of Lushan" of the circuit boardEND
Structure of power adapter1. The function of varistor is that when the external voltage is too high, the resistance of varistor quickly becomes very small, and the fuse connected in series with varistor is blown, so as to protect other circuits from burning out.2. Fuse, with the specification of 2.5a/250v. When the current in the circuit is too large, the fuse will blow to protect other components.
3. The main function of inductance coil (also known as choke coil) is to reduce electromagnetic interference.4. Rectifier bridge, d3sb in specification, is used to change 220V AC into DC.5. Filter capacitor, specification: 180 F / 400V, which is used to filter the AC ripple in DC and make the circuit work more reliable.
6. Operational amplifier IC (integrated circuit), an important part of protection circuit and voltage regulation.7. The temperature probe is used to detect the internal temperature of the power adapter. When the temperature is higher than a certain set value (the set temperature threshold of different brands of power adapters is slightly different), the protection circuit will cut off the voltage output of the adapter, so as to protect the adapter from damage.8. High power switch tube is one of the core components in the switching power supply. The switching power supply can work "on and off", and the power of the switch tube is indispensable.
9. Switching transformer is one of the core components in switching power supply.10. Secondary rectifier, whose function is to change low-voltage AC into low-voltage DC. In IBM's power adapter, the rectifier is often operated by two high-power in parallel to obtain a larger current output.11. Secondary filter capacitor, specification: 820 F / 25V, two in total, plays the role of filtering ripple in low-voltage DC.
In addition to the above components, there are adjustable potentiometers and other resistance capacitance components on the circuit board.
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