Ho heating and noise - Sharp R-630D Microwave Oven

The loud noise and no heat means that the magnetron has failed. It the part that generates the microwaves that heat the food. When it fails it shorts out, causing the transformer to heat up. That is what was causing the burning smell. The cost of a replacement magnetron is around $130-150 range so it may not make sense to have it fixed.

The clicking noise will be the radiator expanding and contracting due to the heat exchanger removing the heat from the food in the fridge.

Hi,

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heatman101

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IF the noise is a sound coming from the oven area, its the megatron tube. Typically, replacing the megatron tube is more expensive than replacing wiht a new unit and a new warranty.

HI, the loud popping noise was the Magnetron tube. this is the main heating device. the noise filter is also damaged and, should be replaced as well.

In conclusion, replacing the Magnetron tube and noise filter will fix this unit.

It's most likely the relay for the magnetron malfunctioning. It'll need professional service.

don;t worry;
all you need to do is lubricate the fan bearings with light machine oil and make sure the fan is not hitting anything

If the maggie went it's very plasible that it took out the Cap and/or HV diode with it.

check highvoltage crcuit ,and check fan, and turntable motor,