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Marshall Major IV Control Knob Replacement

What you need

    1. Marshall Major IV Control Knob Replacement, Control Knob: step 1, image 1 of 2 Marshall Major IV Control Knob Replacement, Control Knob: step 1, image 2 of 2
      • Find the side of the headphones with the control knob.

      • Twist counterclockwise on the ear cushion to remove it.

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    2. Marshall Major IV Control Knob Replacement: step 2, image 1 of 1
      • Remove the protective sticker.

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    3. Marshall Major IV Control Knob Replacement: step 3, image 1 of 2 Marshall Major IV Control Knob Replacement: step 3, image 2 of 2
      • Remove all four of the 4 mm Phillips #1 screws securing the driver assembly.

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    4. Marshall Major IV Control Knob Replacement: step 4, image 1 of 1
      • Lift out the driver assembly with care not to strain the connected cables.

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    5. Marshall Major IV Control Knob Replacement: step 5, image 1 of 1
      • Use the plastic opening tool to separate plastic bracket.

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    6. Marshall Major IV Control Knob Replacement: step 6, image 1 of 1
      • Flip up the black locking flap that secures the ribbon cable.

      • Disconnect the ribbon cable.

      • Lift out the small PCB.

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    7. Marshall Major IV Control Knob Replacement: step 7, image 1 of 2 Marshall Major IV Control Knob Replacement: step 7, image 2 of 2
      • Remove the control knob.

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Conclusion

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

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Drew Kavanagh

Member since: 04/03/26

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