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.

Testing the DC voltage output of the power supply using a digital multimeter can help you isolate any potential issues and determine if you have a bad power supply.

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.

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

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Can't you hook up a test light on the positive side of the motor, then the other lead to ground? If the light lights up, you've got power up to the motor.

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