I need to understand the fuction of this so if possible, Can i get the stuff requested below. Thank you.

Hello
This is a Danby 1.1‑cu ft Microwave. This microwave to replace is under $95.00. If it is not heating there are not many parts that make it cost effective to repair. You can look through our microwave advance search section. We do not have any Danby microwave repair videoes because they are not cost effective to repair. See manual link and repair parts link below. Matt Ace technician