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Introduction

In order to begin this guide, you must first follow the steps in our Nutri Ninja Ninja Blender Duo BL641 Body Disassembly guide. Once you have finished, you may begin this guide.

  1. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement, Nutri Ninja Ninja Blender Duo BL641 Body Disassembly: step 1, image 1 of 1
    • Turn blender upside down

  2. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 2, image 1 of 2 Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 2, image 2 of 2
    • Remove these six screws (0.5 inch 5 gauge phillip's head)

    • Note: 2 of the screws will be star shaped circled in blue

    • Lift the bottom panel off

  3. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 3, image 1 of 1
    • Unscrew and remove these six phillip's screws. (0.5 inch 5 gauge phillips)

    • Note: The screws circled in blue are 1/8" longer and have a slightly different top than the rest. These are the only two screws that are different than the rest.

  4. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 4, image 1 of 3 Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 4, image 2 of 3 Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 4, image 3 of 3
    • Insert pry tool in between the two plastic pieces to separate them

    • Move pry tool back and forth from right to left until the two pieces begin to separate as shown.

    • Pry the two pieces apart with your hands as shown in the picture to finish separating the pieces.

  5. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 5, image 1 of 1
    • This completes the disassembly of the main body of the blender so you can continue to perform replacements on the internal parts.

  6. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement, Motherboard: step 6, image 1 of 1
    • Remove the phillip's screws from the motherboard.

  7. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 7, image 1 of 1
    • Flip the motherboard over.

  8. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 8, image 1 of 1
    • Remove any plugs from the motherboard.

  9. Nutri Ninja Ninja Blender Duo BL641 Motherboard Replacement: step 9, image 1 of 1
    • Desolder wires and cords. Replace old motherboard with new one, and resolder wires and cords.

Conclusion

To reassemble your device, follow these instructions in reverse order.

2 other people completed this guide.

Will Jones

Member since: 09/26/2017

155 Reputation

1 Guide authored

Team

Cal Poly, Team S7-G1, Banghart Fall 2017 Member of Cal Poly, Team S7-G1, Banghart Fall 2017

CPSU-BANGHART-F17S7G1

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One Comment

Hello Will - thank you for that lesson. I am from Canada, going to CUBA and my Cuban friend needs the motherboard for a similar blender (BL 770-2.) Where do I buy one? Thanks.

Judith Falardeau - Reply

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