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Why is my laptop making a soft buzzing noise from the power port and heating up the charging pin when it's plugged in? - Quora
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Why, all of a sudden, did my laptop charger stop working? The wall outlet seems fine but the adaptor in between doesn't seem to receive any power because the adapter has a
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How to troubleshoot a power adapter or transformer that is making a loud humming or buzzing sound. | Sony USA
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