Whirlpool Microwave Capacitor

This magnetron capacitor is the microwave high-voltage capacitor that helps supply the magnetron with the pulse of energy needed to produce heat. Replacing a failing capacitor restores normal heating performance and reduces arcing or loud humming. What it does

• Stores and releases the high-voltage pulse required by the magnetron so the microwave can generate heat.
• Prevents unstable magnetron operation that can cause weak or no heating.
• Common symptoms of a failing capacitor: oven runs but doesn't heat, intermittent heating, loud buzzing/humming, or visible arcing inside the cavity.
• A failed capacitor can also cause blown internal fuses or tripped circuits.

• One capacitor.

• Disconnect power and verify the appliance is completely de-energized before servicing.
• Capacitors can hold dangerous charge; discharge the capacitor safely with an insulated tool.
• Use the exact replacement part and follow the appliance service manual for routing and connections.

This capacitor stores and releases electrical energy to help an AC motor start and run smoothly. Replacing a weak or failed capacitor can restore reliable motor operation and reduce humming, no-start, or stall conditions.

• Provides the phase shift and starting torque an induction motor needs to start
• Helps the motor reach and maintain proper speed under load
• Common symptoms of a failing capacitor: motor hums but won't start, intermittent starts, slow or stalled rotation, or frequent thermal trips
• Visible clues may include a swollen case or leaking residue

• Disconnect power to the appliance before servicing; verify no voltage is present
• Capacitors can retain a charge—discharge safely before handling
• Note wire positions; move leads to the new capacitor one at a time and ensure snug terminal fit
• Reuse the original bracket/clip if applicable and secure the capacitor to prevent vibration

This high-voltage magnetron capacitor stores and delivers the pulse of energy the microwave magnetron needs to generate heat. Replacing a failed unit restores proper high-voltage function so the oven can heat reliably. What it does:

• Stores and releases high-voltage energy to the magnetron during cooking cycles.
• Works with the oven's diode and transformer to produce microwave energy.
• A failed capacitor can cause no heat, weak heating, or a blown fuse/circuit interruption.
• Designed for the microwave high-voltage assembly; handle as a high-voltage component.

• Disconnect power and unplug the appliance before service.
• Discharge the capacitor with an insulated tool before touching terminals.
• Verify this part number matches your appliance before ordering.