Set the meter on DC Volts
Insert the tip of the red probe into the center of the connector.
Hold the tip of the black wire on the outside of the connector.
IF you have the wires in the wrong place the reading will show a dash in front of the reading. Such as -15 V
Switch the leads for the correct polarity.
I overused my laptop last week and the ac adapter got hot until it just stopped working. I want to confirm that it is the ac adapter malfunctioning and not the power jack in my laptop.
I have a multimeter like this one: http://www.doityourself.com/invt/0715714
How should I set it, and where shoould I place the two pins (red and black) to get a reading. My ac adapter should output 15v -----5A according to the casing.