A tech is troubleshooting the power supply for a Maytag dishwasher control board, and he finds some interesting readings. Using a LoZ meter, he reports finding 120 volts at the outlet and at the control board. But strangely, he also has 48 volts on neutral. What gives?

In our latest webinar, we unpacked all the electrical know-how and troubleshooting mojo that goes into properly diagnosing a problem like this. To figure out what went wrong in this troubleshoot, you have to answer the following questions:

Want to watch the full webinar recording, see if your answers to the pop quiz are correct, and take a dive into the nuances of AC and DC power supplies? Click the video above to watch the full webinar -- available only to premium members.