You suspicion is correct, that one component going bad can lead to another failure. But your measurement of the magnatron indicates it's sound.
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[edit: clarification] Your suspicion is correct, that one component going bad can lead to another failure. But your measurement of the magnatron suggests it's sound -- it depends upon the design spec variance allowed in the resistance measurement.
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I would try the diode, and power up the microwave with all covers in place. As other have mentioned, these appliances have very high voltage components and you can get hurt trying a DIY repair. Ensure all capacitors are discharged, you have no jewelry on, etc.
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I would try the diode, and power up the microwave with all covers in place. As others have mentioned, these appliances have very high voltage components and you can get hurt trying a DIY repair. Ensure all capacitors are discharged, you have no jewelry on, etc. If you're new to this, leave it to a professional -- the cost of a replacement is far more economical than the potential injury you can incur.
You suspicion is correct, that one component going bad can lead to another failure. But your measurement of the magnatron indicates it's sound.
I would try the diode, and power up the microwave with all covers in place. As other have mentioned, these appliances have very high voltage components and you can get hurt trying a DIY repair. Ensure all capacitors are discharged, you have no jewelry on, etc.