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Part Number: AP4219754
MFG Part Number: DE47-20034A
Made by: Samsung
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$2.38 $0.36

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18 Questions & Answers

Genuine Samsung part. See all items in Microwave Fuse Or Sensor.

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Part Number DE47-20034A (AP4219754) replaces 2079750.

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No power to control board Bruce M. • Charleston, SC • October 09, 2014

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Less than 15 minutes 

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Most Interesting

The microwave does not turn on at all, even though there is power to the outlet it is plugged into. A few years ago we had the same problem, I had to replace one of the thermostats/temperature switches behind the control panel (KSD-120LC, DE47-20034A). During the replacement, I found the plastic cover which encases the female electrical connector that connects to the male spade connector on the thermostat was burnt and deformed. I did not replace the connector, as I assumed the thermostat failed, which caused the heat that burnt the connector's plastic housing. Fast forward to today, and the same thermostat is bad, upon further inspection, the plastic electrical connector is even more burnt, and the spade connector on the thermostat is discolored and lose. The thermostat's continuity is intermittent. As I trace the wire, which has the burnt end, back through the harness, I discovered it is the feed directly from the electrical cord that plugs into the wall. This time I will replace the burnt connector with something similar, but why is the temperature able to get so high that this connector is heating up so much that it is burning? Is there something else I should look into replacing to prevent this from happening again? I'm not a big fan of there being a fire hazard in my home!!

Adam for Model Number Samsung SMH9187ST


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For awhile now, the magnetron fan on the microwave has shutting down during cooking, and now it is not coming on at all. Is this a thermostat issue? If so, where is it located? Thanks!

Kit for Model Number SMH1622S


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looking online there are conflicting answer in 2 different topics; my microwave is not powering on i.e. no lights come up what could be the cause? what is left fuse:in the fuse its written as 11Y KSD-40LC 70. there are 2 different qa and 2 different responses by you guys of what is the DE # of it. can you let me know which one is the correct one:2A)I checked the bottom 2 fuses. one has (the one on the right name on it: 120I KSD-120LC 0 ), but the left one doesn't have continuity. (name on it:11Y KSD-40LC 70) the markings on each ksd #. and that right has continuity, while left doesn't. is this by design or not? the markings on each ksd # and that right has continuity, while left doesn't. is this by design or not?

Ibtisam for Model Number SMH1713s


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Latest Questions

My micro/hood combo works, it just doesn't heat?? Do I need a new thermostat or could it be other things also.....The clock works, the timer works, and the turntable turns, just doesn't heat.... Thanks,

Christine for Model Number SMH1713S/XAA-0001


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Our microwave shut down and will not turn on. I tested the fuses and the two sensors. One of the sensors (KSD-40LC) did not have continuity. Can that be the problem or are there other tests I can do?

Roscoe for Model Number smh9187b


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Over the range microwave. Intermittently shuts down (loses power). Power comes back (sometimes) when door is jiggled. After removing the cover I found a sensor on top whose connection was burnt. Bypassing the sensor allows the microwave to work correctly. The sensor has the number KSD-120LC stamped on it. I think it is AP4220155. Just want to confirm. Thanks.

Will for Model Number SMH9187ST


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