GE Microwave Diode (WB27X1160)

The GE Microwave Diode converts alternating current into the direct current needed to power the magnetron, which is the component that generates the microwave energy used to heat food. It works alongside the high-voltage capacitor to double the voltage from the transformer, giving the magnetron the power it needs to operate. Without a functioning diode, the microwave cannot produce the energy required to cook or heat food.

The GE Microwave Diode commonly fails due to age, power surges, or overheating within the high-voltage circuit. A shorted or open diode will prevent the magnetron from receiving proper voltage, causing the microwave to stop heating even though it may still appear to run normally.

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

- Microwave runs but does not heat food

- Loud humming or buzzing noise during operation

- Microwave trips the circuit breaker when started

- Burning smell coming from inside the microwave cavity

- Visible burn marks or damage near the diode or capacitor

- Microwave shuts off shortly after starting

- Food heats very slowly or unevenly despite normal run time