How to test a microwave high voltage diode with a multimeter.
What does a microwave diode look like.
Unplug your microwave before beginning this inspection.
Replacing your microwave s diodes.
Locate and remove your high voltage diode to test it for continuity.
Your microwave may turn on but not heat up.
The positive side won t have a band and will have a bit that goes to the capacitor.
The negative side is the cathode side and the positive side is the anode side.
We have manuals guides and of course parts for common ms19m8000as aa 0000 problems.
This diode is rated for thousands of volts which is what the magnetron circuitry produces.
How to diagnose microwave not cooking issues.
During negative half cycle diode is out of picture.
The power flows from the end without the stripe to the end with the stripe.
Some of them may look alike on the outside but their internal characteristics may not be the same.
During positive half cycle capacitor charges to the peak of the secondary voltage.
Which looks like a circle on the end of the wire.
Hull in schenectady new york.
Testing the diode is done just like any lower voltage diode infinite resistance in one direction low resistance when you reverse the ohmmeter test leads less than 10 ohms.
It looks like voltage doubler circuit formed by capacitor and diode.
Pretty much like a fuse.
The magnetron operates as an oscillator which is a device that generates oscillatory electric currents or voltages by nonmechanical means.
Look for the marking a colored stripe on the diode or resistor that indicates which way the current flows.
The parallel resistance cross capacitor is bleeder resistor.
Reverse the meter probes and measure resistance while touching the positive probe to the cathode and the negative probe to the anode.
Diodes are rated for the wattage or amperage that they will be allow to pass or breakdown safely within the component.
Differences in microwave make and model account for this large range in resistance readings.
This could be caused by a problem with the high voltage diode which helps to power the magnetron.