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

pulsating red light while charging

The nearest light to the USB connector pulses or flashes during attempt to charge.

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Some fast chargers are not compatible with the Sony WH-1000XM3.

Try plugging them in through a wall adapter with lower power, less than 40W is recommended.

Some people on the internet also suggest "hitting the right ear with your hand a few times." I don't know why that would help but why not!

If all else fails, it could be a software glitch - a factory reset might help. You would hold the power and NC/Ambient buttons together for 10 seconds as per Sony's article which I recommend you read through.

Let me know if it works!

Best,
Isaiah

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