ok thanks your top element has gone out on you and you will need to send it to sharp to get this fixed if you wanted to but in my opinion is that your gonna pay more in parts/labor then what the m/w is actually worth you can buy these for way under $300.00 but here are the directions for you to find out where to send it too
From a Sharp Authorized Servicer located In the United States. To find
the location of the nearest Sharp Authorized Servicer, call Sharp toll
free at 1-800-BE-SHARP (1-800-237-4277).
Ship prepaid or carry in your Product to a Sharp Authorized Servicer.
Be sure to have Proof of Purchase available. If you ship the Product,
be sure it is insured and packaged securely
If this answers your question, please click the ACCEPT BUTTON This is how I get paid for my skills & knowledge.Need more info ask as long as it pertains to the same question. BONUSES are appreciated. NOTE: As I am not there this is based on your observations and information that i get from you. Thank-you