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

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Wireless and noise cancelling not functioning after water damage.

I accidentally dropped my headphones in my dog's water bowl and now the wireless and noise cancelling is no longer functioning. The headphone jack works so there is definitely sound operating, and when I attempt to charge the led light appears. Can anyone pinpoint what my issue may be?

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Hi @lancemas

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the headphone's operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away

First do not try to charge or to turn on your headphones and then remove the battery as soon as possible from the headphones to minimize any further damage.

Then you need to dis-assemble the rest of the device and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion and water. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better

Here is a link that describes the process. Electronics Water Damage

As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Remove any shields that may be covering some components as the water may have got in under there. The ends of any flex cables and their connectors need to be cleaned as well

Hopefully after you have done all this, it might possibly work correctly again.

Here is a link to the ifixit Sony WH-1000XM3 Battery Replacement guide that may help. At least as far as opening it up to access the board etc

If this process seems too daunting, take your headphones to a reputable, professional electronics repair service, experienced in liquid damage repair and ask for a quote for a repair. If you decide to do this, do it sooner than later.

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