Capacitor 0CZZW1H004B

A microwave that runs but does not heat may have a problem in its high-voltage circuit. This capacitor holds and releases electrical energy used by the magnetron, which produces the heat for cooking. Damage may cause poor heating, a strong humming sound, or electrical failure when a cycle starts. Because several components can cause the same symptoms, the capacitor should be tested before replacement. Never open a microwave cabinet or touch its internal wiring. The capacitor can keep a deadly charge even when the appliance is unplugged. A trained service technician should diagnose the problem and perform the complete repair.