Susan Brown

[Susan Brown]

The third option was, “Efficiency doesn’t matter — that venting material is unsafe to use.”

So – you had the right thinking, but perhaps you didn’t read the answer choices carefully enough.

[Susan Brown]

Hi Ray,

Good job paying attention to details! That is an older video made before the Samurai had refined his technique and made it a habit to always set the meter to LoZ for AC loads.

The VAC function obviously worked fine, and will much of the time. The point of using LoZ with AC loads is to prevent the occasional “gotcha” when ghost voltage is present.

It’s kind of like wearing a seat belt. You don’t try to guess when you will be in an accident and only wear it then – you put it on all the time just in case.

[Susan Brown]

Yes, that’s correct. Do you want me to reset that quiz for you?

[Susan Brown]

Hi Peter,

We’re trying to do a resistance measurement of the TCO-Broil element circuit. Two things to help you figure out the correct answer are:
1. Resistance/ohms measurements always have to be done by disconnecting the circuit, and you already answered that you would be disconnecting the DLB wire
2. Which “PR#” is the test point at the other end of the TCO-Broil element circuit?

[Susan Brown]

We have had ours for so long we’re not really sure where we got it. But AllDolly makes something similar:
https://alldolly.com/

[Susan Brown]

It means “with respect to” neutral. In other words, one of the voltage probes is on a known-good neutral point as reference for the voltage measurement.

[Susan Brown]

Hi Trevor,

Could you confirm which unit you are talking about? Mod. 2, unit 10 is the Module exam for that unit.

[Susan Brown]

I was trying not point out obvious questions on your tests

I appreciate that! But we also have to have something more specific to talk about usually, in order to have a productive “conversation” in these Forums.

Normally for troubleshooting you’ll follow the Ten Step Tango – choose a Load of Interest, etc. But in this case, when the entire appliance is not operating, it just makes sense to trace the power coming in to the machine. You will normally encounter the issue before you get too far into it.

Thanks for the compliment!

[Susan Brown]

If you noticed, we said right above the video that this is the most advanced one in the whole course, so it’s definitely challenging for most of our students.

I’m going to loop one of our more advanced team members in here to help you…

[Susan Brown]

Are you trying to answer Question 20 on the quiz?

The timing chart helps to understand this. See the video at around 10:50 in

This type of schematic reading does take time and practice to get good at – just keep plugging away at it!

If there is a section of the video that you can’t quite follow, let me know a timestamp and we can help you further.

• This reply was modified 1 year, 7 months ago by Susan Brown.
• This reply was modified 1 year, 7 months ago by Susan Brown.

[Susan Brown]

Hi David,

Don’t feel bad – this is a challenging quiz and one that generates a fair number of reset requests.

It’s easier to help if you also mention which question on the quiz you’re dealing with.

For example, Question 3: You arrive on a service call for a washer that’s DOA — no lights, no beeps, no nuttin’. You’ve already verified a valid power supply at the outlet and that the washer is plugged in. Your troubleshooting strategy at this point is to

There is power at the outlet, but not a single thing is working on the washer, including the lights. So, you would Follow the line cord inside the machine, measuring voltage as you go, to find where you’re losing the voltage.

• This reply was modified 1 year, 7 months ago by Susan Brown.

[Susan Brown]

Hi John,

You have to think through what you are expecting to be happening in a circuit in order to interpret voltage measurements.

Switches

If a switch is open, you should read a voltage difference across it. If it is closed, you will measure zero volts across it.

So, it depends what you mean by “bad”. And that depends on which action you are expecting from the switch.

There are certain points in the cycle of an appliance you are expecting a switch to open, and others that you are expecting a switch to close. Either of those actions can malfunction.

Loads

Remember that voltage drop across a load is created by current flowing through the load. If you measure 0v across a load, this just tells you that there is no current flowing through it. This means that there is an open somewhere in the circuit. It does not tell you if the load is faulty or not. There is likely a switch, board, or wiring issue in the circuit with the load that is faulty.

If you do measure a voltage difference across a load, say an element, but it is not doing any work (not heating), then that would indicate that you are measuring voltage potential, and the element has failed open.

Does that help?

[Susan Brown]

Okay! I just reset you.

[Susan Brown]

Hi Peter – sorry for the delay in replying!

One of the answer choices for this question is: Trick question! The refrigerant leaves the compressor as a gas. Booyah!

Which, of course, is the correct answer.

[Susan Brown]

Hi Jesse,

It looks like you are talking about unit 5, not 6.

Did you see this topic that we suggested?

https://my.mastersamuraitech.com/appliance-repair-course-support/student-forums/topic/module-5-unit-5-2/

Read through that, and then here is some more help.

For #2, you answered
Sub control board power supply
Drain pump power supply
Motor speed feedback signal
Thermistor temperature

Two of those are correct.

For #3, you answered
Thermistor voltage drop or resistance reading
12 VDC power supply for external loads or boards
Wash motor power supply
5 VDC board power supply for external loads or boards

Three of those are correct.

If you have trouble figuring out which are correct, let me know.

[Author]

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