GE Range High Voltage Diode (WB26X28935)

The GE Range High Voltage Diode works inside the microwave section of your appliance to convert alternating current into the direct current needed to power the magnetron, which is the component that generates cooking heat. It works alongside the high voltage capacitor and transformer to create the high-voltage circuit that allows the microwave to produce the energy needed to heat food efficiently.

The GE Range High Voltage Diode can fail due to power surges, age-related breakdown, or overheating within the high voltage circuit. A shorted or open diode disrupts the flow of current to the magnetron, which can cause the appliance to stop heating entirely or blow internal fuses repeatedly.

Watch for these symptoms to determine if the high voltage diode may need to be replaced:

- Microwave runs but does not heat food at all

- Microwave makes a loud humming or buzzing noise during operation

- Internal fuse blows repeatedly or the appliance trips the circuit breaker

- Microwave shuts off shortly after starting a cook cycle

- Burning smell coming from inside the appliance during use

- Display and fan work normally but no heat is produced

- Visible burn marks or signs of arcing near the high voltage components