1. Turn on the light for detection, or use a pencil to detect the indoor power socket.

2. The power cord of leakage protection is damaged. Replace the power cord, or test the power cord port with a pencil.

3. The power interfaces on both sides of the integrated stove are open. Plug the power cord into the connector at the other end to see if it is energized, or test the voltage at both ends of the main line with a multimeter.

4. Remove the two terminals of the internal power main line from the motherboard power main board, and check whether the two terminals of the main line are removed.

5. Check whether the motherboard is damaged, whether the pins are welded off, or measure whether there is electricity at the output end of the motherboard with a multimeter.