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Black Sleeve Diode WPR9800486
Rated by 6 customers
Easy
30 - 60 mins
Ratings submitted by customers like you who bought this part.
Get this part fast! Average delivery time for in-stock parts via standard shipping: 1.8 days.
Black Sleeve Diode Specifications
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How Buying OEM Parts Can Save You Time and Money
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... Read more />After I got the microwave down, removing the case was also "interesting." I get bonus points for the fact that the previous owner must've had to replace the same diode before - and then re-assembled the microwave case incorrectly - thereby adding to the confusion (BTW, the service manual that I found online said nothing about how to remove the oven's case).
To remove the case, undo all the screws holding it on, and then rotate the case upwards from the back while also pulling the case backwards. There are crimped folds on the inside of the case that mate with the back edges of the front of the oven's chassis, and these folds have to be unclipped from the chassis in order to remove the case.
Replacing the diode itself was the easiest part of the job. The two connectors on the diode are of different types, making it impossible to install the diode with the wrong polarity.
BTW, the diode that had failed was not an OEM diode; I suspect it was a generic component that had been installed by a repairman sometime between 2004-2008 (when our home's original owners still owned the home). On the other hand, the new diode from PartSelect is an OEM part (it came packaged in a sealed Whirlpool bag).
The fact that the oven had stopped heating indicated that it was either the high-voltage diode or the magnetron that had failed. Since a replacement diode costs ~ 1/10th as much as a replacement magnetron, I figured it made sense to replace the cheaper part first. Fortunately, this fixed the problem.
One last thing: I tried testing both the old and new diodes for conductivity and polarity using my volt-ohm meter (VOM), but I was unable to get either diode to "turn on," even though my VOM is powered by a 9-v battery, and I used the 2-Mohm range setting. I guess the test voltage of my el-cheapo VOM isn't high enough to exceed the diode's threshold voltage, (even though I have successfully used this same VOM to test low-voltage diodes).
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Forrest from Eugene, OR
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Difficulty Level:Difficult
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Total Repair Time:1- 2 hours
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Tools:Screw drivers
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Mark from GREENSBURG, PA
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Pliers, Screw drivers
Discharged HV capacitor and removed cooling fan.
Unscrewed ground end of HV diode and unplugged from HV capacitor.
Installed new diode by reversing the order. In my case, the problem was the magnetron was bad, so I replaced it as well.
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John from SANTA CLARA, CA
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Difficulty Level:Really Easy
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Total Repair Time:30 - 60 mins
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Tools:Screw drivers
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Tommy from FORT VALLEY, GA
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Pliers, Screw drivers
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Lisa from PARADISE, PA
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Difficulty Level:Easy
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Total Repair Time:15 - 30 mins
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Tools:Pliers, Screw drivers
2. I opened up the oven and started measuring the resistance of the diode, capacitor, transformer, and magnetron between terminals and then to ground. The transformer and magnetron were well within the resistance limits. The diode was shorted in both direc ... Read more tions(+-). The capacitor was fully open in both directions -- high resistance.
3. I ordered the 2 parts, installed them, and ran the oven. Worked perfect first time.
4. Reinstalled oven and worked ever since (1 week so far).
5. The secret was that the transformer had a load hum. I figured the transformer was OK. The magnetron had no short between filaments and ground to filaments. The only two left were the diode and capacitor. The first two are about $200 -- almost the value of a new microwave. The $70 repair was well worth it. If the first two were still bad, then tempted to buy a new oven.
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Guy from Bellingham, MA
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Difficulty Level:Really Easy
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Total Repair Time:15 - 30 mins
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Tools:Pliers, Screw drivers
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Manufacturer Part Number: WPR9800486
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