Introduction
The power button on the Bose QuietComfort 30 (QC30) commonly collapses. This method replaces the external button so you can power the headphones on again.
What you need
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Use a utility knife to carefully cut and clear the area around the power button. You will see a small hole with a black contact point inside.
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Insert an earring back into the hole so it presses directly onto the black contact point. A flower-shaped earring back works well. You can also use a round one with a small raised tip, trimmed to the correct depth if necessary.
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You can fill the hole with Sugru. Or cover the button with a silicone headphone protector; This can also help extend the life of the headphone surface. Or simply hold the earring back in place with tape.
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