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Disassembly method and maintenance steps of power adapter

Aug 09, 2021

Let's talk about how to remove the power adapter, as well as the detailed methods and maintenance steps of removing the power adapter.

How to remove the power adapter

How to disassemble the power adapter, four steps to disassemble the power adapter

  1. The upper and lower covers of the 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.

usb wall adapter plug

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 wall wart charger 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 remove the power adapter through the introduction of this article, and then apply it in practice.

Detailed description of methods and steps for removing power adapter

Introduction to removing the power adapter

The structure of the power adapter includes varistor, fuse, inductive coil (also known as choke), rectifier bridge, filter capacitor, operational amplifier IC (integrated circuit), temperature probe, high-power switch tube, switch transformer, secondary rectifier tube and secondary filter capacitor. In addition to the above elements, the circuit board also has adjustable potentiometer and other resistance capacitance elements. The tools / raw materials required to remove the power adapter include electrician's knife, hammer, screwdriver, electric soldering iron, art knife, etc. In addition, the upper and lower covers of the general power adapter are injection molded or bonded with strong glue without any screws, so they can only be cracked with the help of 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.

Introduction to removing power adapter II

Here is the disassembly of the power adapter of the notebook computer. First, place the transverse side of the power adapter on the white paper, and cut along the gap between the upper and lower covers of the power adapter with an electrician's blade. 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. Secondly, 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. In addition, there is a thick hard plastic film between the shielding layer and the circuit board, which is cut with an art knife, that is, the disassembly is completed. The above is the detailed explanation of the method and steps of removing the power adapter.



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