1. Dismantling the door panel: Observe the door panel structure of the sweet potato baking machine and find out the connection mode between the door panel and the machine. Usually, door panels are fixed to the machine by screws or other fasteners. Use a suitable tool, such as a screwdriver or wrench, to remove the door panel.
2. Replace the spring: After the door panel is removed, the broken spring can be found. Take out the broken spring and buy a spring of the same specification and model to replace it.