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Ac adaptor was dropped on ground, and makes a BUZZING SOUND. Is it safe to still use

Buzzing ac adaptor

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It may not hurt anything; the transformer in the adapter has iron laminations which are normally potted with epoxy to keep them quiet as well as stabilising their magnetic characteristics. Dropping it has caused one or more laminations to come loose but it probably won't affect anything. You might feel the adapter now and then for a few days to ensure it is not running hot; warm is OK.

Posted on Sep 06, 2008

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It could be feedback from your speakers... Make sure your power cord is grounded and if you have a sub or surround sound don't set the ac power adapter near them.

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You don't give us much to go on. What model? Self-powered?

What's "the aloy box"?

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Disconnect external cabling from the speakers and see if that changes anything. Then follow where it leads.

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