Where can I buy to replace the motherboards?
Where can i buy to replace the motherboards for Nutri Ninja Ninja Blender Duo BL641
I did a cursory internet search and not much turned up. A full replacement main board may not be easy to come by. That leaves you with a handful of options:
I don’t recommend performing option number 4 unless you are very comfortable with electronics.
Best of luck! And remember to be safe when working with electricity and electric components.
Here is a guide for using a multi meter to test components on the PCB
Here is a guide for testing different PCB components.