No. As long as the microwave oven door remains closed when in operation, there is no danger to you from the microwave energy. It is, however, important that you do NOT attempt internal/electronic parts repair. Due to the high risk of electrocution, only repair professionals should attempt such repairs.

Microwave energy penetrates foods more deeply than during conventional heating. The water molecules inside of the food heats as quickly as those on the outside. When heated, water expands so skinned or shelled foods explode to accommodate the increasing size of the water molecules. To avoid overheating these types of foods, use your microwave's preset cooking feature for more precise cooking times, or reduce the power level during cooking.