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Customer Questions and Answers for High-Voltage Diode Kit (Microwave) by Frigidaire

4.89 (64)
By: Frigidaire
Part Number: OEM9662217
Manufacturer Part Number: 5303918287

This microwave high-voltage diode kit converts AC to DC in the high-voltage circuit so the magnetron can heat. Replacing a failed diode often restores heating performance. What it does:

  • Rectifies high-voltage AC to DC for the magnetron
  • Completes the high-voltage circuit with the transformer and capacitor
  • Common failure symptoms include running but not heating, loud humming/buzzing, or blowing a fuse/tripping a breaker at start
  • Visual clues can include cracking, swelling, or burn marks on the diode
What's included:
  • One high-voltage diode
Install notes:
  • Disconnect power before servicing; microwaves can retain lethal voltage even when unplugged
  • Properly discharge the high-voltage capacitor before handling components; use insulated tools and approved procedures
  • Note diode orientation/polarity and mounting; install exactly as the original

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$49.63
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