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Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement

Introduction

Replacement of the mainboard (PCB-A) on any Kaffelogic Nano or Nucleus Link coffee roaster with a D or P prefix serial number.

What you need

  1. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing Front Panel Screws: step 1, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing Front Panel Screws: step 1, image 2 of 2

    • Remove the 6x 2.5mm Hex screws on the left and right side of the roaster.

    • Take care not to damage the buttons while maneuvering the front panel, with all six screws removed it may fall away.

    Edit

  2. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Lift the closure: step 2, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Lift the closure: step 2, image 2 of 2

    • Hold the front panel steady while removing the plastic top/closure.

    Edit

  3. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing the front panel: step 3, image 1 of 1

    • Pull away the front panel carefully.

    Edit

  4. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing the rear panel: step 4, image 1 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing the rear panel: step 4, image 2 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Removing the rear panel: step 4, image 3 of 3

    • Remove the last 2.5mm Hex screw securing the rear panel.

    • Pull up on the rear panel to remove it from the roaster.

    Edit

  6. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Access granted: step 5, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Access granted: step 5, image 2 of 2

    • Set the panels aside somewhere safe and bask in the beauty of your naked roaster.

    Edit

  7. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the thermocouple: step 6, image 1 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the thermocouple: step 6, image 2 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the thermocouple: step 6, image 3 of 3

    • Use a 2.0mm slotted screwdriver to remove the thermocouple wires from the PCB-A

    Edit

  8. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the motor: step 7, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the motor: step 7, image 2 of 2

    • Disconnect the motor cable, this may take some wiggling.

    • Refrain from using pliers or metal tools on this connector, as the plastic insulation can be damaged.

    Edit

  9. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the SSR signal: step 8, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Disconnect the SSR signal: step 8, image 2 of 2

    • Pull upwards on the SSR signal connector to remove it.

    Edit

  10. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the cable carrier: step 9, image 1 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the cable carrier: step 9, image 2 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the cable carrier: step 9, image 3 of 3

    • Remove the 2x 2.5mm Hex screws securing the cable carrier to the base.

    • Be careful not to lay the roaster on its front as the buttons can be damaged or broken off.

    Edit

  11. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the ribbon connector: step 10, image 1 of 2 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the ribbon connector: step 10, image 2 of 2

    • Gently remove the ribbon connector.

    Edit

  12. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove PCB screws: step 11, image 1 of 1

    • Unscrew the 4x PH2 PCB screws.

    • These screws are captive to the PCB.

    Edit

  13. Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the PCB: step 12, image 1 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the PCB: step 12, image 2 of 3 Private Kaffelogic Nano 7/LINK (D-P Serial) Mainboard Replacement, Remove the PCB: step 12, image 3 of 3

    • Pull the PCB away from the base assembly.

    • Use pliers to disconnect the transformer secondary wires from the back of the PCB

    • The transformer wires may be reconnected in either orientation. If you are replacing the USB daughterboard, you can choose to leave these wires in place.

    Edit
Conclusion

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

Author

with 1 other contributor

Kaffelogic

Member since: 07/23/25

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