The Samsung SMH9207ST Oven has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Samsung might be giving you.
The time indicator displays 88:88 if there is a power outage.
The microwave door is not closed securely, or there may be packaging material stuck in the door seal.
The appliance generates a strange noise, burning smell, or smoke.
Water or other foreign substances have entered the appliance.
The power plug or cord is damaged.
The surface of the microwave is cracked.