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Marshall Woburn I/O Board Replacement

What you need

  1. Marshall Woburn I/O Board Replacement, Back Panel: step 1, image 1 of 2 Marshall Woburn I/O Board Replacement, Back Panel: step 1, image 2 of 2
    • Before starting, unplug the speaker from any power source. After unplugging the device, wait around 10 minutes before starting to let the capacitor fully discharge.

    • On a flat surface, orient the device so that the front grille is facing downward.

    • Using a Phillips #1 screwdriver, remove the ten outer 28.6 mm screws marked in red.

    • Remove the eight inner 28.6 mm screws with the Phillips #1 screwdriver.

  2. Marshall Woburn I/O Board Replacement: step 2, image 1 of 2 Marshall Woburn I/O Board Replacement: step 2, image 2 of 2
    • Lift the back input board slightly above the back panel.

    • Rotate the input board so that you can slide it into the hole in the back panel that it came from.

    • Fully slide the input board through the back panel and set it down gently inside the speaker.

  3. Marshall Woburn I/O Board Replacement: step 3, image 1 of 1
    • Grab the panel by the large hole and lift one side until you can fit your hand under.

    • Use your hand to fully remove the back panel from the rest of the frame.

  4. Marshall Woburn I/O Board Replacement, I/O Board: step 4, image 1 of 1
    • Disconnect the 5 wires circled in red from the back input board.

    • There may be a little resistance when pulling on the wires, but it should not require excessive force.

  5. Marshall Woburn I/O Board Replacement: step 5, image 1 of 2 Marshall Woburn I/O Board Replacement: step 5, image 2 of 2
    • Remove the two 12.7 mm screws marked in red from the front of the back input panel with a Phillips #1 screwdriver.

    • Remove the power input from the back side of the panel.

  6. Marshall Woburn I/O Board Replacement: step 6, image 1 of 1
    • Completely remove the I/O board and the attached plate.

Conclusion

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

Ryan Berry

Member since: 10/31/23

237 Reputation

2 Guides authored

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One Comment

what is step 7? Replace the board? PS. I was born in N Dartmouth!

Mary F Boston - Reply

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