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Introduction

This is the Circuit Board Replacement for the Sennheiser HD 350BT this guide was specifically made if your having any trouble with any of the regarding Audio Failure, Physical Damage, No Power or Charging with a good battery would highly recommend this option if your experience one of these problems

What you need

Step 1 Motherboard

Sennheiser HD 350BT Motherboard Replacement, Motherboard: step 1, image 1 of 2

Sennheiser HD 350BT Motherboard Replacement, Motherboard: step 1, image 2 of 2

Remove the right ear pad.

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Step 2

Sennheiser HD 350BT Motherboard Replacement: step 2, image 3 of 3

Remove the seven Phillips screws securing the driver housing.

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Step 3

Remove all of the Phillips screws securing the motherboard.
Desolder and disconnect all motherboard connections.

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Conclusion

To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.