E10 appears and the cooker will not start; sometimes accompanied by no display backlight.

Safety first: Unplug the cooker before opening any covers. Do not attempt live-voltage measurements unless you are trained.

• Check outlet and cord: Plug another appliance into the same outlet to verify power. Inspect the Bella power cord for cuts or kinks. Ensure the cord is fully seated in the cooker (if detachable).
• Try a different outlet: Avoid extension cords or power strips. Plug directly into a wall outlet.
• Inspect internal fuse: If comfortable, remove the bottom cover and locate the inline or board-mounted fuse near the power entry. A visibly blown fuse must be replaced with the same rating. Investigate for short circuits before replacing.
• Control board power supply: If the fuse is intact but E10 persists, the low-voltage power supply section on the control board may have failed. Board replacement is typically required.