Microwave High Voltage Diode (rectifer) Test Procedure

Microwave Oven High Voltage Diode

Procedure to test the microwave high voltage diode to see if it is shorted.

1. Select the Ω scale on the meter.

2. Place the meter leads across the diode. The reading should be “40MΩ,” “OL,” or a reading of infinity.

3. Reverse the meter leads. The reading should again indicate a reading of infinity. If the diode shows “infinity” in BOTH directions, it is NOT shorted.