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    • Samurai Appliance Repair Man

      Webinar Recordings Index Page   10/03/2017

      On-demand appliance repair training videos for Professional Appliantologist members Over 30 hours (and growing!) of original, high quality appliance training webinars developed and given by yours truly are at your fingertips, on topics you won't find anywhere else. Fill in those knowledge gaps, strengthen those areas of uncertainty, and boost your skills. Watch on mobile or desktop at your convenience whenever, wherever.  Ultra Short Primer on Basic Electricity, Circuits, Ohm's Law, and Schematic Reading (Length: 1:04:48) Basic Refrigerator Troubleshooting (Length: 1:10:45) Schematic Reading Workshop, 10/2015 (Length 1:19:08) Troubleshooting Strategies for Computer-Controlled Appliances (Length: 48:34) Semiconductors and PN Junctions (Length: 1:04:37) Appliance Temperature Sensing Devices & Technology (Length: 1:27:33) Voltage Measurements, Meters, Ghost Voltages, and Triac-controlled Neutrals (Length: 1:29:32) Troubleshooting with Tech Sheets, Part 1, 4/2016 (Length: 1:09:26) Troubleshooting with Tech Sheets, Part 2, 4/2016 (Length: 1:21:11) Tech Sheet Review, 4/9/2016: Bosch Speed Cooker, Amana Refrigerator, GE Glass Cooktop Range (Length: 1:22:58) Pulse Width Modulated (PWM) Switches used in Samsung Switched Mode Power Supplies (SMPS) (Length: 27:07) PWM Computer Cooling Fan in a Whirlpool Refrigerator (Length: 14:53) Understanding AC Split-phase Household Power Supplies (Length: 52:41) Troubleshooting a Samsung Electric Dryer without Disassembly using Live Tests and the Schematic (Length: 22:47) Troubleshooting a Bosch Dishwasher No-Heat Problem using the Schematic and Live Tests (Length: 15:38) Linear Motors and Linear Compressors (Length: 55:54) Bi-directional PSC Drive Motor Systems in Whirlpool VM Washers (Length: 56:52) Appliance Service Call Structure and Troubleshooting Strategies (Length: 1:00:16) The Ten Step Troubleshooting Tango and Workshop Exercises (Length: 1:35:39) Troubleshooting Ten-Step Tango Advanced Workshop (Length: 1:32:06) Ten-Step Tango Troubleshooting Workshop: Refrigerators (Length: 1:35:57) Whirlpool Duet Washer Schematic Analysis & Whirlpool Dryer Moisture Sensor System (Length: 1:03:04) Neutral Vs. Ground, Inverter Microwave, Digital Communications, Loading Down in DC loads, and more! (Length: 1:14:45) Gas Oven Service Call After a Parts Changing Monkey (Length: 36:04) AFCI and GFCI Circuit Protection Technology (Length: 41:26) Troubleshooting Samsung Refrigerators and more (Length: 1:29:58) 3-way Valves and Dual Evaporator Refrigerators (Length: 1:15:45) Split-Phase Compressors and PTC Start Devices (Length: 1:11:57) Gas Dryer Ignition Systems (Length: 53:50) Refrigerator Sealed System Thermodynamics, Part 1 (Length: 43:07) Refrigerator Sealed System Thermodynamics, Part 2 (Length 1:09:09) To access these webinars and all the other info-goodies here at Appliantology, become a Professional Appliantologist today. If you need cost-effective, time-flexible, state-of-the-art appliance technical training, check out the Master Samurai Tech Academy.
    • Samurai Appliance Repair Man

      [Webinar] Samurai's Sealed System Sleuthing Secrets - 10/30/2017 @7PM ET   10/19/2017

      Having laid some theoretical groundwork in the last webinar, we're going to focus on practical considerations in this one. That means quick n’ dirty techniques for diagnosing sealed system problem using strategically chosen and skillfully interpreted temperature measurements.  Review homework from the first session on 10-2-2017. Home refrigerator practical design and operating rules-of-thumb useful for troubleshooting Practical application exercises Troubleshooting scenario exercise Techniques for making system temperature measurements for determining superheat and subcooling Sealed system diagnosis homework assignment (to be reviewed in the next webinar in this series) If you attended the first webinar in this series, this is your payday! We’re going to apply that keen, penetrating insight you now possess into money- and time-saving shortcuts you can use to diagnose real-world refrigeration systems on service calls. See this calendar event for more details                   
    • Son of Samurai

      [Webinar] Appliantology Workshop   10/22/2017

      Information is the name of the game in the appliance repair trade today. Appliantology is a powerful information tool for the professional appliance repair technician. But just like with any of the more capable tools in your tool bag, many of the more powerful features are hidden from you unless you "read the manual." Ugh! Who wants to do that? Well, this is one time when you don't have to! In this webinar, Team Samurai will personally walk you through the site and show you many of the useful and powerful features that even long-time users probably never knew existed.   
freedomfive

No Power Whirlpool RM278PXL Built In Oven Microwave Combo

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freedomfive

Hi guys! So, today is officially the first day of taking our property maintenance and repair business full time. Well, I've been doing it full time for a while now but my husband has finally made the leap and left his other job (I'm so proud of him- it takes a lot to start up on your own like most of you have done!) I am so thankful for this forum and the help I have received here so far, and I look forward to learning more and having my experiences help others. Here is the situation I am requesting help on for a call I am going on tomorrow:

Early 1980's built in microwave/oven combo Whirlpool RM278PXL. The microwave was acting up (overheating things?) and then today no power to either the microwave or oven. Owner checked and no gfci or circuit tripped. What should I be looking at/ testing? I have looked at RepairClinic and there still are some parts available.

Thanks in advance,

Natasha

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Need appliance parts? Call 877-803-7957 now!

Samurai Appliance Repair Man

Hi Natasha,

Congrats on the Big Leap! It's a scary but exciting time-- there's nothing like being your own boss. And you actually have more job security being self-employed than you do working for The Man because you're more in control of your own destiny.

Do you have the tech sheet or wiring diagram for this unit? There has to be a thermal cutoff that's tripped and killing power to the unit. Also, have you checked the incoming power supply with a meter?

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RegUS_PatOff

... no power to either the microwave or oven.

no power to either Oven ?

then it's a connection box OR house power problem

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NCARepair

There should not be any cut outs to the oven portion of this combo. Check breaker for 220 volts first then the supply line behind the unit.

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freedomfive

Hi Guys,

Thanks for the suggestions (and encouragement!)

Today will be my first time on site so I will look at the power supply and see....

Natasha

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freedomfive

Alright...life is never what it seems ;) When I went on site I found out that the original info I had was wrong: the oven is working just fine, it is only the microwave that is having problems. They said it started this last week: one time it really overheated water- they said the water was in the regular amount of time but when they drank it, their mouth was burnt. Then it didn't work.

When I arrived the display read "000" and the light worked when I opened the door so it obviously had power. I put in a wet dishrag and turned it on. It ran and the rag was heated. I guess it's one of those things like the symptoms always disappear at the Dr's office ;)

So, what should I be checking?

Thanks in advance,

Natasha

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Budget Appliance Repair

I never heard of a microwave heating too much!!!!

Probably operator error, put in a much longer time then they meant to and didn't realize it.

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Samurai Appliance Repair Man

I never heard of a microwave heating too much!!!!

Me neither! I think they left something in there too long and, coincidentally, one of the HV components failed later. There may be no connection between the "overheating" and component failure.

Here's how to troubleshoot the microwave using the Divide and Conquer Method™ ==>

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freedomfive

Thank you for the responses. I hadn't seen the the microwave "divide and conquer" method yet- that will be very helpful!

Thanks again,

Natasha

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NCARepair

This microwave has a broken stirrer belt. Part #311958. Drop down the control panel and reach up to the left above the cavity. Work the belt around the pulley with one hand while keeping tension on it so it stays on then hook it to the small pulley on the blower motor. When this belt breaks you will have hot spots in the oven. Easy to see how this works if you purchase a magic light bar from your supplier. They are about $5.00.

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Budget Appliance Repair

NCARepair, very good thought. I forgot about that, not many microwaves use a belt to turn the stirrer fan anymore. Most are turned by the air flow from the cooling fan or just have a mica wave guide cover now days.

If there is a stirrer fan in a microwave and for some reason it doesn't turn NCARepair is absolutely correct that you will have hot spots and if the item being heated happens to be just in that spot all the microwave beams hit it directly instead of being dispersed evenly around the microwave cavity

Edited by Budget Appliance Repair

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RegUS_PatOff

Whirlpool RM278PXL c.1982

Belt # 18

click on picture

Drive-Belt-311958-01280915.jpg

O2009778-00006.png

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freedomfive

Great sleuthing- thank you for the replies! I will go ahead and order that part from RepairClinic since it costs less than the gas back and forth to the site ;) I'll keep y'all posted...

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