It is unavoidable that as the frequent usage of the laptops, there would always be some tiny problems. Laptop power supplies usually do not have any strain relief built onto the connector that plugs into Sony VGP-AC19V15 AC Adapter. As a result, the power cable that connects into the AC plug can become worn and disconnect over time. Rather than purchase a new power supply for the laptop, you can repair it by attaching a new AC plug.
At the very beginning, prepare some tools that could greatly help your process: such as wire stripping tool, three-prong replacement plug; philips screwdriver etc.
Make sure that clip off the damaged portion at the end of the cable using the wire stripping tool and remove three inches of the plastic jacket from the end of the damaged cable.
Then unscrew and remove the cover from the replacement plug. Pull the cable through the cover of the replacement plug. Remove a half-inch piece of the plastic jacket from the end of each of the three wires at the end of the AC power cord, and then twist the end of each to keep the copper strands together.
Be carefully loose the screws located on the terminals of the replacement plug. Position the white wire that extends from the AC cable onto the silver terminal of the replacement plug between the terminal and the screw. Turn the screw while pressing the copper wire on the terminal until the wire is secured.
Position the black wire that extends from the AC cable onto the gold or brass terminal of the replacement plug between the terminal and the screw. Tighten the screw while confirming that the copper wire is in contact with the terminal until the wire is secured.
Place the green wire that extends from the AC cable onto the green terminal of the replacement plug between the screw and the terminal. Tighten the screw until the wire is fastened securely and confirm that the wire is in solid contact with the terminal.
Attach the plug cover and align the screw holes and then tighten the screws onto the housing to secure the plug in place.
Then a completely new Sony VGP-AC19V15 AC Adapter come back and you could continue to use this one without buying a new one. If you think it is too trouble to do the above steps, you could also buy a replacement one on feevoo.com. There are also a lot of other hot laptop parts: Compaq 402018-001 AC Adapter(Input: AC100-240V (worldwide use) Output: DC18.5V 3.5A Power: 65W ) Hp 402018-001 AC Adapter 18.5V 3.5A(18.5V 3.5A) Dell 330-4113 AC Adapter(Input: AC100-240V (worldwide use) Output: DC19.5V 4.62A Power: 90W) Dell 331-0536 AC Adapter(Input: AC100-240V (worldwide use) Output: DC19.5V 3.34A) Gateway 90.4V607.U01 Keyboard(Color: Black Status: Genuine and new! ) Dell OC569K Keyboard(Color: Black Remark: Ribbon cable included. )