2.4 Magnetron
The magnetron can be tested by ‘ohmic’ measurement´ only.
The volume resistance of the terminals F and FA should be less than 1
Ω
.
The insulation resistance between the two terminals and the housing
should be infinite.
Measure the resistance with an EHG tester.
Note:
An internal flashover (short-circuit between cathode and anode)
cannot usually be established by taking a measurement.
This is not indicated until the appliance is switched on when high
voltage is applied to the magnetron.
It may also be possible to detect the fault by loud humming noises.
Before installing the magnetron, ensure that the metal seal is ok and is
seated correctly.
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