For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

If all appears to work properly, use a multimeter to test the switches for continuity. With the multimeter set on Rx1, touch the probes to the switch terminals. The reading should be at or near zero.

Additional Tips Using a Multimeter: If you have a multimeter, you can also use it to check the voltage of a USB port by connecting it to the external pins of the USB-A connector.