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      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] Practical Refrigeration Sealed System Thermodynamics - 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. Here are the topics we're going to discuss: 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) See this calendar event for more details                   
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Adirondack Bob

GE OTR Microwave JVM1871SH001

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Adirondack Bob

Trying to diagnose no heat in a GE OTR MICROWAVE JVM1871SH001. The unit comes on and the turntable works but no cooking. The diode is ok, all door switches test ok, took capacitor out and tested with Fluke on cap. setting and it was spot on according the range listed on capacitor. Next I'm trying to ohm the HV transformer but not sure how. I took the red lead and the white lead off the capacitor and tried to ohm it that way and got 0ohms. Is that the correct way to it or not? Also how to test the magnatron without taking the whole unit down. Thanks, Bob.

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Scottthewolf

it's a GE and you have tested almost everything but the Magnetron. It's the magnetron.

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Adirondack Bob

Thanks, yes tested almost everything but transformer and mag. Also when I arrived I could smell a slight electrical burn. Thanks

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Budget Appliance Repair

Just had a 1989 Whirlpool range hood microwave doing the same thing. Do you also notice what seems to be a louder then normal buzzing/vibrating noise.

If so, take an amp reading and see how many amps the unit is drawing, (the one I worked on only came up to around 2.4 - 2.6 amps), and you could smell that burning magtube smell after a minute or so of running.

Then pull the two wires of the magtube and make sure the are away from everything and start it up again and see what the amp reading is, (I got around 5.6 amps and the heavy vibration noise wasn't there any more).

A good working microwave will draw about 2 - 3 amps when first started and in about 3 seconds, (after the filament is warmed up), you will see the amp draw come up the the full 11 - 12 amps that a microwave will pull. If you listen carefully when a magtube ramps up power, (you will here a real light buzz noise after the filament warms up), you will see how that corresponds to the amp raise.

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Adirondack Bob

Thanks Guys, Went back tonight and replaced the magnatron. Microwave is working as good as new! :rocker: Thanks Again, Bob

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