Why do Galanz microwave ovens often burn magnetrons?

Most of the reasons why microwave ovens burn magnetrons are caused by ignition in the furnace. The general situation is as follows:

1, the microwave oven runs at no load, that is, the microwave function is started when there is no food in the microwave oven cavity. It is forbidden to start the microwave oven with no load.

2. The utensils used are metal utensils or utensils with silver edges in Phnom Penh, and none of these utensils can be used under microwave function.

3. The mica sheet at the outlet of the microwave oven is damp, and too much oil adheres to cause fire.

4. In the rotary wave microwave oven, the rotary wave motor does not rotate, which may also cause the bottom of the cavity to catch fire?

In addition to these reasons, there are also some reasons caused by microwave tubes, as shown in the attached figure.