You will need
  • - scissors;
  • - insulating tape;
  • knife;
  • - soldering iron.
First, find the source of the problem. Most power supplies mobile computers consist of two elements: transformer, outstanding stable voltage supply and the cable that connects this device with a laptop. Check the tester, which element is unstable.
Unplug the power supply from the AC mains. Disassemble the device. Remember that this item is not includes screws. Make sure again that the problem is in the wire, not the transformer, checking the contacts tester.
Buy a new cable for the power supply. Make sure that it contains the right amount of inner living. Connect the new cable to the transformer, replacing the old analogue. In this case, it is very important to connect each individual wire.
Assemble the unit and wrap it with insulating tape. If you were fairly careful parsing of the block, glue the body halves. The second method is less secure because it can lead to the opening of the power supply during operation.
If the problem is in the wire connecting the power supply with a laptop, buy a new connector. Most often, breaks it is this element of the device. Make sure that the faulty connector block instead of the mobile computer.
Cut the excess cable at a distance of 5-10 cm from the connector. Solder the new adapter. Note that the laptops of some companies have very specific slots for connection of the power supply.
If you want to extend the service life of the battery, before soldering lived push the cables into a plastic tube. Isolate each individual mine. Slide the tube that it overlaps vulnerabilities. Secure it with tape.
In the case when the cause of failure is malfunction of a transformer, buy a new power supply. Select universal adapter, which has a large number of removable connectors. Pay attention to the possibility of changing the output voltage.