If your power supply does not appear to have any problems after testing it with the multimeter, check all of the power connectors to make sure they are properly plugged into the devices.

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.

For automotive circuits, we recommend an auto-ranging meter with at least 20MΩ of internal resistance. Make sure to use the correct multimeter setting for a car battery.

Power on the computer. The multimeter should read between 11 and 12 volts. If it's too high or too low, the power supply is failing and needs to be replaced. Test pin 12 as well.

One of the simplest tasks a digital multimeter can perform is a basic voltage test on a car battery. Positive and negative terminals, hooked up to the car or not, will give a base number.

If you want to test the Power Supply Unit (PSU) of your Windows computer, use one of the methods mentioned in this post.

My stepfather wired my basement and I'm installing the outlets (eg. placing the wire on the outlet itself), but I'm not sure which circuit breakers to turn off.How can I tell if a power line is ...