tastethecoffee
Unfortunately it is not possible to find parts pictures for this brand. I found the web site were you can buy the service manual:
http://www.servicemanuals.net/result...&model=MQ9998W
It might help you with repair advices.
What kind of a microwave it is?
A counter top or build in?
How old is it?
Microwaves today are absolutely inexpensive. A counter top microwave you can buy for much less then a hundred bucks and an over the range for a little bit more then $200. Is it worth to fix the old one?
Gene.