Lost with the new appliances? The Samurai teaches you Circuit Fu…

Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.
  • Announcements

    • Samurai Appliance Repair Man

      Webinar Recordings Index Page   11/07/2017

      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) Refrigerator Sealed System Thermodynamics, Part 3 (Length: 1:11:56) Refrigerator Sealed System Thermodynamics, Part 4 (Length: 37:45) Refrigerator Sealed System Thermodynamics, Part 5 (Length: 16:35) 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.
    • Son of Samurai

      [Webinar] Appliantology Workshop   11/09/2017

      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.   
Fixerdude

Thermal Fuse Puzzler Whirlpool LER5620KQ1

Recommended Posts

Fixerdude

Returned to the dryer to find it running, clothes dry, clothes not warm. Lint screen was loaded with lint. Timer was still in original time setting.  Cleaned out lint  in preparation for next load. The dryer would not start no noise, nothing.  I did rush out to buy a new thermal fuse before the dealer closed up. Came home and figured I would trouble shoot and learn my way around this repair before simply swapping out the thermal fuse. Thermal Fuse, Push to Start Switch, Door Switch and Thermostat all tested positive (continuity) while isolated. I made a jumper wire lead with alligator clips and decent old extension cord. Drum Motor and Timer Unit (in turn) operated normally while receiving power straight from 120v outlet. Timer Unit tested positive for continuity at black to blue prongs, but at brown to tan prongs, did not make it all the way over to zero on my analog multimeter. Good grief...starting over, I bypassed the thermal fuse by fixing together both blue wire terminal with a thin bit of tape stretched around both. Set the timer, pushed start and it started right up with good heat. I tested the old thermal fuse again and still shows good. At this point, the heck with trying to save ten bucks on the fuse, out came the new fuse. Hooked it to the blue wires, NOTHING. It will only run if the fuse is bypassed. Please help!

Thanks,

Therm

 

 

Share this post


Link to post
Share on other sites

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

DurhamAppliance

hmmm... doesn't make sense unless you have a connector problem.. using the alligator clips would avoid an oxidized inside of a female connector or a connector not firmly attached to its wire. .

with the fuse connected, and dryer unplugged,  touch your multimeter probe to the outside of the female connectors (making sure yoir probes aren't touching the fuse spades..... if not continuity then connector problem.  Also with power on, set to dry...  meter set  to voltage and if you get any measurable voltage  using probes as previously described, then sounds like a connector problem

 

  

Edited by DurhamAppliance

Share this post


Link to post
Share on other sites
Samurai Appliance Repair Man
8 hours ago, Fixerdude said:

brown to tan prongs

The schematic does not call out either of these wire colors. Post a photo of the timer wiring.

Do the terminals on the blue wires attaching to the thermal fuse fit tightly or do they slip on with little effort? Post a photo of the blue wires that connect to the thermal fuse especially showing the terminals.

Use a photo hosting site to upload your photos and post the links here. 

Re-check the continuity of the new thermal fuse. Did you buy an OEM replacement thermal fuse or a generic?

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now