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Featured

Schematic Diagrams, Timing Charts, and Open Neutrals

Posted by Samurai Appliance Repair Man in Samurai Appliance Repair Man's Blog, 29 December 2014 · 44 views
schematic, troubleshoot and 1 more...

Here's an excerpt of a recent, 20-minute training video on how to use the schematic diagram and timing chart to troubleshoot a problem with a washer drain pump that would not operate. The drain pump itself was good and getting voltage. Turns out that the problem was an open neutral.



The full training video explains these important troubleshooting concepts in detail:
- how to break down a complicated schematic and read it to solve the problem you’re working on,
- using timing charts to interpret timer switches on schematics,
- technical explanation of open neutrals,
- test methods for identifying an open neutral,
- power and loads.

Samurai Tech Academy Fundamentals students will find the full-length video in the Troubleshooting module of the Fundamentals of Appliance Repair training course.

Fundamentals graduates can also log in and watch the video because all STA courses come with lifetime access.

Featured

Dishwasher Pain In The Hose

Posted by Patricio in Patricio's Blog, 16 December 2014 · 210 views
Drain Issues

Dishwashers can be a pain to diagnose correctly. A recent example is a Samsung DMT400 RHS that gave me a fit with the delicate blinking light corresponding to a drain problem. Used the fast tract for diagnostics.

Reset control board (Unplug/Replug unit), put into diagnostics & went thru cycles with drain cycle toward end of service mode. Unit drained but flow was weak, so I inspected disposal inlet & drain hose for blockage which was first problem to inspect on Fast Tract. No restrictions found, next on list was drain pump.

The ohms found on the pump were below specifications so I suspected pump was weak & shaft possibly seizing. Replaced pump, flow was improved, but the flow still seemed weak. Dishwasher worked for a few loads then shut down again with the delicate led blinking. Posted question what am I missing & got feed back of blocked drain hose and case sensor which is next on list of problems.

Replaced case sensor on this unit over a year ago for filling issue, did not think that it was the culprit although there was sediment building in the assembly.

I replaced the water sensing case assembly as a parts changer not knowing how much millivolts to check for at the board. Also rechecked drain hose & blew thru drain hose from case brake back thru pump & into tub. No restrictions felt there, could hear the tub water gurgling. Reinstalled machine & babysitted cycle (watching paint dry) completed wash cycle & drained with what I perceived as weak flow, but drain it did with no problem. Two days later another call for incomplete cycle. What is going on? Bad PCB board which was last thing in problem list.

Now I am really determined, set aside 3 hours to focus completely on the machine. One thing I did not do was check harness connections so that was in the battle plan. Arrived reset board, started normal cycle, pump did initial drain with very little water in sump, filled, & washed ((watching paint dry again but I viewed posts on Appliantology in the process).

Finally began drain cycle. With hose in bucket the flow was sputtering Knew for sure I had a blockage problem. I pulled main drain hose off took it outside & run high pressure garden hose water, passed with flying colors. Next I pulled hose from pump to case brake, applied water pressure & that is when the culprit was dislodged. What appeared to be a couple of small feet that are attached to some cutting boards.

Now apparent the intermittent problem was these feet caught in the bend of the drain hose that would pivot allowing water to flow at a reduced rate & then turn enough to plug the gap allowing very little flow thus causing the drain cycle to time out before completely emptying the sump.

Moral of this story if having a intermittent drainage problem that shuts down a dishwasher, Samsung in particular, eliminate all drain hoses as a possibility of blockage by putting high pressure(60+ psi) water thru them with an outside garden hose.


​Link to forum topic:
http://appliantology...r-dmt400rhsxaa/

Featured

Whirlpool VMW Speed sensor intermittent failure

Posted by Applianceman97 in applianceman97's Blog, 04 December 2014 · 225 views
VMW, Whirlpool, WTW

Hi Boys and Girls,


So we all have seen the basket speed sensor fault on the VMW washer's right??? Well I had one with that fault code but i could not produce the problem at time of servicing the machine. All functions tested good. Tach verification mode passed. EVERYTHING checked good. Ran rinse and spin loads, seriously... the machine worked perfect!

Well long story short, got a call back the NEXT day. Complaint was no spin again. Got there and did all my testing and AGAIN everything checked good.

Then I had the customer load the machine with a load and ran a rinse and spin cycle. Guess what it ran FINE! It took 3 rinse and spin cycles until the fault showed up again. Sure enough it was the basket speed sensor fault. I quickly went to the tach verification mode and the test failed. Intermittent actuator (well optic sensor) failure.

So double and triple check your optic sensors folks. They can fail intermittently!!!



Source: Whirlpool VMW Speed sensor fault

Featured

Video Tip #1 : Oven door glass has continuity?

Posted by DurhamAppliance in DurhamAppliance's Blog, 28 November 2014 · 438 views

This is the first in a series of short video tips.

First up is a tip passed on to me from Applianceman97. It's info he recently acquired in a training class. Even with all the knowledge bro A97 has, he continues to train and attend classes. A superior tech who continues to up his game is an unstoppable force. We're lucky to have him share his knowledge on appliantology, even if he is still so young he has to ask permission to leave the porch.




Featured

Coconut Lime Chicken Soup

Posted by Mrs. Samurai in Mrs. Samurai's Kitchen, 10 November 2013 · 1,104 views

Here's a Thai-inspired chicken soup that is easy to make and bursting with flavor! It's healthy comfort food with an Asian twist.

Posted Image
Ingredients
  • 2 tablespoons coconut oil, ghee, or butter
  • 1 onion, chopped
  • 1-2 pounds uncooked chicken breast, diced
  • 1 inch piece of fresh ginger, peeled and chopped fine
  • 4 cloves garlic, minced, divided
  • 1 quart chicken broth (I use either homemade or a box of low sodium, no added MSG.)
  • 1 can coconut milk (look for this in the Asian/Thai section of the grocery store. I prefer regular, not "lite".)
  • 1 lime, juiced, divided
  • ¼ tsp. red pepper flakes
  • 4 scallions, chopped
  • ½ bunch cilantro, chopped
  • salt, to taste
  • optional: Thai fish sauce, cooked rice
Directions

Heat a soup pot over medium high heat, then add the coconut oil. Saute the onions with a little salt for a few minutes, then add the chicken chunks with a little more salt. Cook, stirring frequently, until chicken is just cooked through. Add the ginger and half of the garlic towards the end of this.

Stir in the broth and bring to a boil, then stir in the coconut milk, half of the lime juice, and the red pepper flakes. Reduce the heat to low and simmer covered for at least 15 minutes (longer is fine, too).

Turn off the heat, and add salt to taste (depends on the amount in your chicken broth). Stir in the rest of the garlic, the scallions, and most of the cilantro (leave a little aside for topping individual bowls). Add the rest of the lime juice if desired. Cover and let sit off-heat for 5 to 10 minutes, then serve.

Great served over rice. Add a few drops of fish sauce to your serving to knock the flavor out of the park!


From: Amana NED7200TW Dryer no heat, problem with cycling thermostat?

Posted by kdog in kdog's Blog, 16 March 2012 · 3,361 views

[Yes, I did reset the breaker and checked the voltages. Here's the wiring diagram:
Posted Image



Source: Amana NED7200TW Dryer no heat, problem with cycling thermostat?



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