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Marshall Major IV Control Knob Replacement

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    1. Marshall Major IV Control Knob Replacement, Control Knob: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Marshall Major IV Control Knob Replacement, Control Knob: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • 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: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Remove the protective sticker.

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    3. Marshall Major IV Control Knob Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Marshall Major IV Control Knob Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • 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: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Lift out the driver assembly with care not to strain the connected cables.

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    5. Marshall Major IV Control Knob Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Use the plastic opening tool to separate plastic bracket.

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    6. Marshall Major IV Control Knob Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • 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: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Marshall Major IV Control Knob Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • Remove the control knob.

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

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Drew Kavanagh

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UMass Dartmouth, Team 2-3, Biswokarma Spring 2026 crwdns2935289:0UMass Dartmouth, Team 2-3, Biswokarma Spring 2026crwdne2935289:0

UMASSD-BISWOKARMA-S26S2G3

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