Do You Know the Secrets for Troubleshooting Warm Refrigerators?

Posted on January 4, 2015 by - Tech Talk

Refrigerator Flow Chart Quiz

Refrigerator Flow Chart Quiz

Also, the refrigerator is plugged in, the doors close properly, and the condenser coil is clean.

What's the next thing to check?

Bad control board, right? Nope. What's your next guess?

Check the defrost system, right? Nyet, tovarish!

This is an easy one IF you understand how refrigerators work. We reveal all the troubleshooting secrets for refrigerators in the Samurai Tech Academy's Refrigerator Troubleshooting and Repair Training Course. From the simple to the fancy, from single evaporator units to fridges with two or more evaporators, from split-phase, single-speed compressors to inverter-driven, variable speed compressors, our Refrigerator course is the most comprehensive, up-to-date, and affordable training course out there.

If you're looking to get into the appliance repair trade or to brush up your skills if you're already in the trade, your search for an appliance repair school is over. Enter the Dragon.

Oh, BTW, the answer to the quiz is to see if the compressor is running. 🙂

Bonus question: How do you check the compressor operation? To be continued...

Using Electrically Equivalent Points and the Schematic to Work Smarter, not Harder

Posted on January 4, 2015 by - Tech Talk

Do you know what "electrically equivalent points" are? Do you know how to recognize them on the schematic? Most importantly, do you know how to use them to avoid needlessly tearing down an appliance just so you can check a component?

In this expedition into appliance repair transcendence, Samurai Appliance Repair Man reveals more tricks and techniques for using the schematic to troubleshoot an electric dryer with no heat. Watch how I identify electrically equivalent points on the schematic and use them to diagnose the problem with the dryer with minimal disassembly. This is a simple example showing how using the schematic can save you time, aggravation, liability, and even personal injury. The principles illustrated here can be applied to any and all appliances IF you know how to read and use the schematic diagram.

Don't know how to read a schematic? We teach all about this in the Fundamentals of Appliance Repair course.

 

The two criteria for electrically equivalent points are:
1. There is no measurable voltage difference between them and
2. They are in electrical continuity with each other.

A simple example of electrically equivalent points are two points along the same unbroken wire.

If this seems mysterious to you, then check out our appliance repair training courses. You'll learn this and much more in a comprehensive, self-paced, up-to-date, and affordable online training course.

 

Understanding Schematic Diagrams, Timing Charts, and Open Neutrals

Posted on December 28, 2014 by - Tech Talk

Here's an excerpt of the full, 20-minute training video now available in the Fundamentals of Appliance Repair training course that shows how to use a schematic diagram and timing chart to troubleshoot a problem with a washer drain pump that would not operate. The drain pump itself was good and getting voltage. Turns out that the problem was an open neutral.

 
The full training video explains these important troubleshooting concepts in detail:
- how to break down a complicated schamatic and read it to solve the problem you’re working on,
- using timing charts to interpret timer switches on schematics,
- technical explanation of open neutrals,
- test methods for identifying an open neutral,
- power and loads.

Samurai Tech Academy Fundamentals students will find the full-length video in the Troubleshooting module of the Fundamentals of Appliance Repair training course.

 

A Surprisingly Simple Solution for an Electric Dryer that Runs but Won’t Heat

Posted on December 13, 2014 by - Tech Talk

The specific problems with this electric dryer were that it would run but not heat and the drum light stopped working, yet the motor still ran.

A couple of important concepts that are taught here at the Samurai Tech Academy are illustrated in this interesting and unusual service call that I had recently:

1) there can sometimes be an unusual situation that is causing what sounds like a typical problem, so you have to keep a holistic view of the entire appliance, its surroundings, and its inputs (i.e., electric or gas supply);

2) pre-diagnosing an appliance using the schematic diagram always makes the service call more efficient. I knew exactly what I needed to look at first which allowed me to zero in on the problem quickly rather than wasting time going down false trails. Huge benefit: I didn't spend unnecessary time disassembling the dryer.

Come with me now on a Journey of Total Appliance Enlightenment, and sharpen those schematic-reading skills along the way!

 

Learn appliance repair and become a certified tech right here at the Samurai Tech Academy.

If you have any questions about the Samurai Tech Academy that aren’t answered on our FAQ page, just contact us by phone or email.

Read about our current offerings of online appliance repair training courses. Then take our sample course to get a feel for what it’s like to learn appliance repair online at the Samurai Tech Academy. Finally, enroll in the course or courses of your choice.

The Samurai Tech Academy
Learn more. Earn more.

Anatomy of a Warm Refrigerator Service Call

Posted on December 12, 2014 by - Tech Talk

Join Samurai Appliance Repair Man on a real-life service call where he shows you how to troubleshoot and repair a warm Samsung French Door bottom mount refrigerator the Master Samurai Tech way.

 

 

You may notice in the video that I ask a couple times where all that ice came from but I never explicitly explain where. There's a very simple explanation and I thought I'd let that come out in any followup discussion. Do you know the answer?

Okay, I'll tell you. The melted defrost water that was pooled up in the pan below the evaporator was sucked up by the venturi effect caused by the evaporator fan motor running in a tightly controlled air channel. The water would have gathered around the evaporator fan and started freezing, slowly squeezing in on the evaporator fan motor blade like an icy boa constrictor. An early warning sign would have been noise from the fan blade tapping on the accumulating ice, which these owners ignored. Eventually, the ice built up enough to completely encase the fan blade in its icy tomb.

If you have any questions about the Samurai Tech Academy that aren’t answered on our FAQ page, just contact us by phone or email.

The Samurai Tech Academy
Learn more. Earn more.