Step-by-step

1. 1

   Power off the headphone

   2 min

   Shut down the Shure SRH840A completely. Remove the case and any cards or accessories before opening the device.

2. 2

   Remove exterior screws

   4 min

   Remove the external screws that secure the housing. Keep them sorted by length and location.

3. 3

   Open the device housing

   8 min

   Warm adhesive if needed, then use plastic picks to separate the housing without damaging clips or seals.

4. 4

   Disconnect the battery

   3 min

   As soon as you can reach it, unplug the battery connector with a plastic spudger before working on other cables.

5. 5

   Clear access to the driver

   8 min

   Remove shields, brackets, and cables blocking the driver. Note cable routing before disconnecting anything.

6. 6

   Remove the old driver

   10 min

   Disconnect the old driver, free adhesive or fasteners, and lift it out without tearing nearby flex cables.

7. 7

   Install the replacement driver

   10 min

   Seat the new driver in the same orientation, reconnect flex cables firmly, and secure brackets or adhesive.

8. 8

   Test before final close

   5 min

   Reconnect the battery temporarily and power on. Confirm the repaired function works before finishing reassembly.

9. 9

   Reassemble the device

   8 min

   Power off if needed, reverse the opening steps, replace screws, and close the housing flush.

10. 10

    Final function check

    4 min

    Power on and re-check the repaired function plus basics like touch, charging, sound, and cameras when applicable.