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Diode for microwave oven

Your microwave oven has a Diode problem ?

The part is broken and the appliances doesnt work?

A diode allows the magnetron, which produces the waves, to work.
This diode may be defective.
A burning smell will be felt, a thud will be heard, the oven will turn but the food will not be heated.

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Here are examples for partial reference for microwave oven :

Where to find the reference?