How to open the top round thing inside microwave

open door and look inside or usually with the packing at top of box ---if none notify manufacturer for replacement

Any flaws in the painted surface on the inside of the unit will cause a spark and that generates heat. Examine the surfacecor any exposed metal. You have to use special paint to resurface the inside.

I laughed my socks off. Without the door hook the door opening or closing mechanism is completely broken. If you have the time you could unplug it and dis-assemble the whole thing from the back and re-assemble it with a new hook, perhaps make a new hook from aluminuim sheet. I would throw it away and but a cheaper microwave.

OMG,
first thing, THROW IT AWAY!
These panels are in place to protect you from radiation that the microwave puts out to heat your food. Under no attempt should you use this piece of equipment, or attempt repair!! Either use the warranty program to send off and get repaired, or throw it out and buy a new one. I have found that even sending one for repair the owner is responsible for two way shipping, and that is usually half as much as a new microwave!
good luck,
Jay

That would be the stirrer cover, and the leak is probably grease that has gotten into the area above the cover.

The cover, stirrer and exposed area under the cover needs to be cleaned thoroughly to prevent arcing and to allow for proper stirrer of the weaves for even cooking.

You can find handy exploded views and order any needed parts by model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

remove the round button(s) and remove the cover..clean thoroughly and replace anything thats burnt, if metal clean and paint touchup

1.Needs to remove that disk and clean the grease under it.
2. With sand paper clean dark burn spots.
3. Apply touch paint on open metal spots.
4.Put everything back.

I’m happy to help further over the phone at https://www.6ya.com/expert/vitaliy_f406165329c75ede

This is the stirrer cover. It is important. It is to keep food particles and grease out of the stirrer and waveguide area.

If grease or food particles build up, they can arc, which will cause burn damage to the cover, stirrer, chassis, and/or magnetron.

If you have any arcing, you should remove it for cleaning. Be careful of sharp edges.

The stirrer's job is to stir the microwaves to ensure even heating, even when a turntable is not present or not used.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.

This is the stirrer cover. It is important. It is to keep food particles and grease out of the stirrer and waveguide area.

If grease or food particles build up, they can arc, which will cause burn damage to the cover, stirrer, chassis, and/or magnetron.

If you have any arcing, you should remove it for cleaning. Be careful of sharp edges.

The stirrer's job is to stir the microwaves to ensure even heating, even when a turntable is not present or not used.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.