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Microwave Drop-Down Door 20-Amp Blown Fuse

Topics:

  • MDD 20-amp fuse blew
  • What causes the 20-amp fuse in the drop-down microwave to blow?

Cause:

  • Misadjustment of switches
  • Control board faulty
  • Monitor switch faulty
  • Open circuit wire harness
  • Short circuit wire harness
  • High voltage capacitor
  • HV wiring
  • HV rectifier assembly
  • High voltage transformer
  • Magnetron

Troubleshooting:

Turn the home circuit breaker to the unit off for 30 seconds then back on again. Then retest the unit operation.

Answer:

If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair

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