I want you to take a look at the door switch I've circled below. Think about it for a minute, then answer one question: what single test could you do to prove beyond a doubt whether or not that door switch is operating within spec?
There's no trickery going on here -- it's just a simple switch. But many techs will test it using a flawed, limited test that has a big chance of leading them to the wrong conclusion. And they'll do a bunch of unnecessary disassembly. Post your answer in the comments below!
Want to check your answer? Watch our in-depth technical webinar which covers this troubleshooting scenario and many other circuit puzzles, including:
- Some pop quizzes about series and parallel circuits
- Diodes, how they work, and the surprisingly tricky situations that can arise because of them
- Loads in series, how they work, and what they look like in a real refrigerator schematic