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The Nutri Ninja Ninja Blender Duo BL641 is a 72 oz. black blender that comes with 1 Jumbo Multi-Serve 32 oz. container, 1 Regular 24 oz. Nutri Ninja Cup with Sip & Seal Lids for on the go, and a 75 Recipe Cookbook. Its strong blades can crush ice and pulverize fruits, vegetables, and seeds with different buttons for different settings.

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Where can I buy to replace the motherboards?

Where can i buy to replace the motherboards for Nutri Ninja Ninja Blender Duo BL641

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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:

  1. Take a roll of the dice and see if you can find a used one on eBay (I wouldn’t recommend this unless you have good relations with the seller)
  2. Contact Shark/Ninja and ask if they have the parts and get a quote/see if they will sell or give you one
  3. See if your ninja is still under warranty and file a claim
  4. Since the main board is relatively simple, determine which component has gone bad and replace it (i.e. resistors, capacitors, etc.)

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.

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