How to Repair an AC Adapter

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Laptop computer power adapters tend to receive a lot of wear around the area closest to the AC plug when the laptop is moved and when the cord is located in an area of high traffic. Laptop power adapters vary in the construction of the AC power plug, however, for those that do not include a strain relief on the plug, the area close to the plug tends to wear out before the adapter or the power supply. Repairing the adapter takes 15 minutes including soldering skills to complete the task.

Things You'll Need

  • Wire-stripping tool
  • Wire-cutting tool
  • Flat edge screw driver
  • Philips screw driver
  • Three prong AC replacement plug
  • Remove the AC plug and the damaged area of the power cord from the AC adapter using the wire cutting tool. Remove 3 inches of the outer sheath from the power cord using a wire-stripping tool, so that the three cables inside the cord are accessible.

  • Remove a 1 inch section of plastic sheath from the outside of each individual wire inside the power cord and then twist the end of each cord so that the copper strands are tight.

  • Remove the screws on the replacement AC plug. Insert the cord through the plug housing prior to fastening the wires to the plug. Loosen the screws on each prong of the replacement plug. Attach the white wire to the silver prong on the back of the replacement plug and then secure the wire in place by tightening the screw provided. Confirm that the wire copper makes good contact with the bare metal of the screw and prong.

  • Attach the black wire to the gold prong on the back of the replacement plug and then secure the wire in place by tightening the screw provided. Confirm that the wire copper makes good contact with the bare metal of the screw and prong.

  • Attach the green wire to the green prong on the back of the replacement plug and then secure the wire in place by tightening the screw provided. Confirm that the wire copper makes good contact with the bare metal of the screw and prong.

  • Move the plug housing over the wires and attach to the plug and secure using the screws provided with the plug.

Tips & Warnings

  • Before securing the plug housing, confirm that each wire is connected to the proper prong on the plug, and that copper portion of each wire does not touch the other wires and only touch the prong to which it is secured. Injury could result if the wires are connected to the wrong plug.

References

  • Photo Credit Stockbyte/Stockbyte/Getty Images
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