Fix Your Stuff Community Store

Free Shipping on Domestic Orders $75+

Marshall Major IV Control Knob Replacement

Introduction

If the control knob is not working to control volume or power the headphones off or on, then the control knob is likely faulty. This guide will walk you through how to replace the knob safely and efficiently.

Keep in mind that all of these steps are from the right side of your headphones; the location of where you see the control knob indicates where the right side is.

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.

    Edit
    Ask FixBot

    Add Comment

  2. Marshall Major IV Control Knob Replacement: step 2, image 1 of 1

    • Remove the protective sticker.

    Edit
    Ask FixBot

    Add Comment

  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.

    Edit
    Ask FixBot

    Add Comment

  5. 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.

    Edit
    Ask FixBot

    Add Comment

  6. Marshall Major IV Control Knob Replacement: step 5, image 1 of 1

    • Use the plastic opening tool to separate plastic bracket.

    Edit
    Ask FixBot

    Add Comment

  7. 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.

    Edit
    Ask FixBot

    Add Comment

  8. 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.

    Edit
    Ask FixBot

    Add Comment

Conclusion

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

Cancel: I did not complete this guide.

Author

with 1 other contributor

Drew Kavanagh

Member since: 04/03/26

483 Reputation

4 Guides authored

Badges: 3

Team

UMass Dartmouth, Team 2-3, Biswokarma Spring 2026 Member of UMass Dartmouth, Team 2-3, Biswokarma Spring 2026

UMASSD-BISWOKARMA-S26S2G3

5 Members

4 Guides authored

0 Guide Comments

Add Comment

View Statistics:

Past 24 Hours: 9

Past 7 Days: 17

Past 30 Days: 19

All Time: 32