The high-voltage capacitor is an electronic device that holds a charge of electricity in the high-voltage circuit of the microwave. The capacitor stores electricity similar to how a battery does, but can be charged and discharged instantly. If your microwave will not produce heat, there could be an issue with the capacitor. This genuine OEM replacement high-voltage capacitor is approximately 5 inches long x 2 inches wide, and is compatible with most microwave brands.
NOTE: Make sure your microwave is unplugged, and that your capacitor is discharged before you begin this repair. A capacitor stores large amounts of electricity even after your microwave is unplugged.
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Gary
September 15, 2022
Can a bad capacitor result in the fuse to go bad? I replace fuse and it last for about two weeks before it blows.
For model number jmc8130dds
Hello Gary, thank you for your question. There is no proof that a bad capacitor will make a fuse go bad. Thermal fuses will blow to prevent the microwave from overheating and potentially causing a fire. A fuse will also blow if there is a surge in electricity, which can cause a short circuit. We hope this helps. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you.
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Customer Repair Stories
Average Repair Rating: 4.4 / 5.0, 1 reviews.
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Sparks and loud hum from oven
1. I went to the internet to find the service manual for the Maytag microwave. 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 directions(+-). 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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