Dacor V6Va Service Manual at Manymanuals.com
is the only thing I can advice you. Why so? Because fixing microwaves requires more knowledges then it seems. The only hope that your dacor device is not broken at all but it may need some stuff to be done. And the manual is one of best way to check is it true. I didn't used dacor microwaves ( samsung mostly) but when I had problems with mine one, those manuals were really helpful for me.