Customer Questions and Answers for High-Voltage Capacitor (Microwave) by Ge

This high-voltage capacitor sits in the microwave's HV circuit, storing and releasing energy to power the magnetron. Replacing a weak or failed capacitor may restore heating performance and help reduce stress on other high-voltage components. What it does:

• Provides energy storage and filtering in the microwave's high-voltage circuit
• Works with the HV transformer and diode to supply power to the magnetron
• Common symptoms: runs but doesn't heat; loud hum/buzz during cook; blows the internal fuse or trips a breaker when cooking starts; visible bulging or leakage on the capacitor

• 1 high-voltage capacitor

• Unplug the microwave; for built-in/OTR units, switch off the circuit breaker as well
• The capacitor can retain a dangerous charge—use the proper discharge procedure
• Photograph wiring, transfer leads to the same terminals, and secure the capacitor in its bracket
• If no-heat persists, test the HV diode, transformer, and magnetron