1. Check whether the switch is normal: first determine whether the power supply and plug are working normally, and check whether the switch is normal with a multimeter. If the switch doesn't work, please replace it.
2. Dismantle the rice cooker: disconnect the rice cooker from the power supply, then open the screw at the bottom of the rice cooker and connect the power switch.
3. Replace the power switch: use welding tools to remove the original power switch and replace it with a new one.
4. Install the new switch: weld the new switch to the rice cooker and ensure that all components are firmly installed in the original position.
5. Test the rice cooker: Plug the rice cooker back into the socket and press the switch to test whether the rice cooker has been repaired successfully.
The above methods can help you to repair the power switch of Panasonic rice cooker, but please note that if you are not familiar with electrical maintenance, please do not try to repair it, so as not to cause greater damage or danger. Professionals should be invited to carry out maintenance.