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A Real-World Example of How to Troubleshoot Multi-Board Configurations
In our latest workshop webinar, we cultivated the much-desired skill of troubleshooting appliances with multiple control boards. Watch and learn!
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Unravel the Mystery of this Simmer Switch Circuit...
Take a look at the circuit for this electric cooktop element. Notice anything odd about it? Looks pretty straightforward, right? Well, it certainly is straightforward when the simmer switch isn't closed. Here's what the circuit looks like when it's not running on simmer...
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Troubleshooting a Whirlpool Dishwasher with a Cheater Cord
Here's the situation: our tech has a Whirlpool dishwasher that does everything normally, except the wash motor simply won't run. Board or motor? Here's how to use your cheater cord to directly test the motor.
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How Refrigerator Water Systems Work
There's a very common configuration of valves that are used in refrigerators with ice makers and dispensers -- so common that every tech should be very familiar with how it works and what terms are used to refer to it. You can't troubleshoot what you don't understand!
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Pop Quiz: What's Wrong with this Range Wiring?
You open up the terminal block on a Bosch range, and you see this. What's wrong with this picture? (Hint: those of you who have watched this webinar recording should know what's up).
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Identifying Power Supplies on a Samsung Control Board
See if you can identify two things on this Samsung dishwasher schematic:

1. Where does the control board receive line and neutral?

2. Where doe the sub-control boards get their DC power supply?
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Can You Solve this Schematic Symbol Mystery?
Here's something for you sharp Appliantology techs to puzzle over: what in the world is the circled symbol on this schematic?
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How Does this Dryer Run in a Seemingly Impossible Configuration?
As the picture says, the dryer runs like this. And even weirder, when you correct the wiring, it stops running. What one test could you do that would prove your hypothesis about this faulty circuit?
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One Powerful Measurement Could Have Saved This Tech Hours of Troubleshooting...
Here's the situation: the tech is working on a dryer that keeps blowing its thermal fuse. The tech has already replaced the fuse once, and it's now blown again. What could be causing this, and what's the best way to tell?
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How do Relays and Triacs Work?
Whether a control board in an appliance is simple or sophisticated, there's one trick it has to pull off: switching high AC voltage using low DC voltage. They pull this off by using relays or triacs, devices that all of us are at least passingly familiar with.But how do these very common control components work, exactly? And how is troubleshooting a relay different from troubleshooting a triac? That's what we'll look at today.

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There's more than one way for a 3-way valve sealed system to be configured, and if you want to troubleshoot these machines right, you've gotta know the difference.
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Two of the most common circuit protection devices we'll see on outlets or circuit breakers are AFCIs and GFCIs. But what exactly are these devices, what do they do, and what are the differences between them?
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Know your Power Supplies
For those of us techs based in the States, it can be easy to think that electricity just "happens to exist" as our familiar 120/240 volt split-phase power. But that's only one of many forms that electrical power can take. It can come in a variety of voltages and phases, all depending on what standard a particular country or region decided upon.
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Start Capacitors and Run Capacitors in Split-Phase Motors
Ever seen a capacitor somewhere in a split-phase motor's circuit and wondered what exactly the point of that things is? That's what we'll talk about in this blog post.
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Samsung has developed something of a reputation in the tech community, and not necessarily the most flattering one. Many consider the brand to be overly-complicated and impossible to troubleshoot, and some refuse to work on these machines at all. But is this attitude really warranted?
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We've all changed countless ignitors in gas ovens, and any tech worth his salt knows that the definitive way to detect a failed ignitor is with a current measurement. But why does low current through the ignitor cause ignition to fail? Where does that current spec come from?
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When Ohm's Law Doesn't Apply...
Ohm's law, meaning the set of simple equations that define the relationship between voltage, current, resistance, and power, is an essential tool for appliance techs. This said, there are some loads to which Ohm's law doesn't apply.
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EEPs: What they are and how to use them
When you need to test a component, do you always need to just resign yourself to tearing apart the appliance until you reach it? Or is that a waste of time and energy (not to mention unnecessary liability), when you could be working smarter, not harder?
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Is there a reason to distinguish ground from neutral when it comes to electrical testing? If you need a reference for a voltage measurement, doesn't ground work just as well as neutral?
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Control Board Troubleshooting: Inputs, Outputs, and Algorithms
Many techs are intimidated when it comes to troubleshooting control boards. After all, we're talking about computers here -- computers that just so happen to run appliances. But as complicated as that may sound, control board troubleshooting really boils down to just three things: measuring your inputs, measuring your outputs, and understanding the board's algorithm.
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BrandSource Partners with Master Samurai Tech Academy for Tech Training
Team Samurai has been training appliance techs at the Master Samurai Tech Academy for over 6 years now, and helping out repairmen on the web for far longer. Mr. Appliance has already used our online training for 4 years to make their techs the best they can be. Now, BrandSource has teamed up with us, too!
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Have you ever been robbed of a quick troubleshoot by ghost voltage? How about by an open neutral? Sounds like you need to start using a loading meter for ALL of your AC voltage measurements. Watch the video below to learn why, and find out some things you didn't know about circuits and electrical measurements along the way.
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Quick Tips for Reading Unclear or Ambiguous Schematics
Sometimes, the schematics that manufacturers give us aren't as clear as we would like them to be. Take this refrigerator, for example...
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Do you know the most efficient way to troubleshoot this washer motor, or would you go through unnecessary disassembly? Watch this webinar excerpt to find out.
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Can Low Water Pressure Cause Solenoid Valves to Leak?
We run into water inlet solenoid valves in many different situations -- washers, dishwashers, refrigerators -- so it's important to have a firm grasp on exactly how they work. For example, I just talked with a tech recently who was wondering why low water pressure can cause inlet valves to leak.
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