My laptop charger adapter broke and I a have this other old adaptor in the house. They both have the same voltage(19V) and 1.58A. The first adapter(The one that broke) has three wires (black, white, and red) going out which then connect to the laptop charger pin. The second adapter however, has three wires going out. I have read that an extra wire is used as some kind of a sensor. In another forum someone identified the sensor wire and left it out in the connection. What does the three wires represent each(which is neutral or positive)?
I simply need a easy fix for my charger. While you attempt to answer please note that I do not have a multimeter or any tool for checking current and voltage except for a tester screw driver and that Except for high school physics I do not know anything else in electricity. I also hope that this is the right place to ask this question.