I've just experienced the same symptoms with my QC35 II; crackling noise with ANC on left speaker, and it intermittently not working at all. Lightly "hitting it" seemed to resolve it for a while, further suggesting a glitchy/loose electrical connection, until it fully stopped working. Disassembling it, and probing it, all connections seemed to have signal and be well, but I accidentally poked the speaker membrane, which made it sing![br]
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So a "speaker driver replacement" should probably do it. I temporarily added a piece of rolled tape to press down on the speaker membrane at the connection point to make do for now (the speaker driver is behind a glued cover, requiring a hot air gun and glue to restore).[br]
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So a "speaker driver replacement" should probably do it. I temporarily added a piece of rolled tape to press down on the speaker membrane at the connection point to make do for now (the speaker driver is behind a glued cover, requiring a hot air gun and glue to restore properly).[br]
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See [link|https://www.youtube.com/watch?v=RC-WFHleXeY|How to repair Bose QC25 or QC35 - speaker replacement DIY] or [link|https://www.youtube.com/watch?v=L0TV_YvW7Fk|Replacing Blown Speaker on Bose QC35 I & Bose QC 35 II].[br]
I've just experienced the same symptoms with my QC35 II; crackling noise with ANC on left speaker, and it intermittently not working at all. Lightly "hitting it" seemed to resolve it for a while, further suggesting a glitchy/loose electrical connection, util it fully stopped working. Disassembling it, and probing it, all connections seemed to have signal and be well, but I accidentally poked the speaker membrane, which made it sing![br]
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I've just experienced the same symptoms with my QC35 II; crackling noise with ANC on left speaker, and it intermittently not working at all. Lightly "hitting it" seemed to resolve it for a while, further suggesting a glitchy/loose electrical connection, until it fully stopped working. Disassembling it, and probing it, all connections seemed to have signal and be well, but I accidentally poked the speaker membrane, which made it sing![br]
[br]
So a "speaker driver replacement" should probably do it. I temporarily added a piece of rolled tape to press down on the speaker membrane at the connection point to make do for now (the speaker driver is behind a glued cover, requiring a hot air gun and glue to restore).[br]
[br]
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See [link|https://www.youtube.com/watch?v=RC-WFHleXeY|How to repair Bose QC25 or QC35 - speaker replacement DIY|new_window=true] or [link|https://www.youtube.com/watch?v=L0TV_YvW7Fk|Replacing Blown Speaker on Bose QC35 I & Bose QC 35 II|new_window=true].[br]
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See [link|https://www.youtube.com/watch?v=RC-WFHleXeY|How to repair Bose QC25 or QC35 - speaker replacement DIY] or [link|https://www.youtube.com/watch?v=L0TV_YvW7Fk|Replacing Blown Speaker on Bose QC35 I & Bose QC 35 II].[br]
I've just experienced the same symptoms with my QC35 II; crackling noise with ANC on left speaker, and it intermittently not working at all. Lightly "hitting it" seemed to resolve it for a while, further suggesting a glitchy/loose electrical connection, util it fully stopped working. Disassembling it, and probing it, all connections seemed to have signal and be well, but I accidentally poked the speaker membrane, which made it sing![br]
[br]
So a "speaker driver replacement" should probably do it. I temporarily added a piece of rolled tape to press down on the speaker membrane at the connection point to make do for now (the speaker driver is behind a glued cover, requiring a hot air gun and glue to restore).[br]
[br]
See [link|https://www.youtube.com/watch?v=RC-WFHleXeY|How to repair Bose QC25 or QC35 - speaker replacement DIY|new_window=true] or [link|https://www.youtube.com/watch?v=L0TV_YvW7Fk|Replacing Blown Speaker on Bose QC35 I & Bose QC 35 II|new_window=true].[br]
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