Sennheiser HD 4.50 Motherboard Replacement

ID: 141969

Description: This is a Sennheiser HD 4.50 Headphone...

Steps:

1. Locate the side designation on the headband-earpiece junction.
2. The motherboard is located on the right side.
3. Remove the right side ear pad.
4. Refer to the Ear Pad Removal guide for more guidance.

5. Use the Phillips #00 screwdriver to remove the four 10 mm screws holding the ear cup cover in place.
6. Use an opening tool to pry off the cover.

7. Use a Phillips #000 screwdriver to remove the four 6 mm screws holding the motherboard in place.

8. Use tweezers to remove the hot glue that covers the wires
9. Using the tweezers, grasp and slowly pull away the wires from the motherboard until they disconnect.

10. Use the iFixit opening tools to lift up on the motherboard.
11. While lifting up with the tool, grab and pull the motherboard with your free hand away from the button functions until it disconnects.
12. There may be some resistance in this step.

13. Desolder the three wires that are on the underside of the motherboard now that it is free.
14. Remove the motherboard.