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Repair and disassembly information for Sony WH-1000XM3 wireless noise-cancelling over-ear headphones.

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Won't turn on, won't charge (no red indicator light)

Hi everybody ✌️

My headphones don't turn on at all. No lights come on either.

They also don't seem to charge. There is no red light turning on when I plug it in.

I though maybe the battery died after the headphones where in the car on a hot day. But the battery seems fine visually.

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I also tied to unplug it for 20mim or so. Nothing changed.

I checked the USB board visually but it seems fine too.

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The flexcable connecting the USB board with the Mainboard in the right earspears looks a little suspicious. It looked like this already before I pulled it out. Maybe that's the issue? 🤔

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I just don't know where to get the right one. I'm located in Germany.

Does someone have an idea? That would be awesome.

Cheers Sam

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Hi @sam37109

Use an Ohmmeter and check each wire in the ribbon cable, for continuity from end to end for each wire, especially those that look damaged.

As you said, the cable looks suspicious, so it may be a broken wire or more than one.

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