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hx520 and "power line/transformer"-type buzzing


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Hi, this is my first post, so thanks for reading. I just wanted to find out whether I should RMA my HX520W if it makes the low buzzing noise that others have posted about. It's louder than the fan (which is darn near silent :biggrin: ), but only audible from <10 inches or so... which means I don't hear it. It does change with system load, but it seems to get a little higher pitched, rather than louder.


Is the buzzing an early-warning alarm for other issues down the road? Could it be contributing to the high-pitched whine coming from my motherboard?


Thanks for any responses.

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Thanks for responding.


My PSU is plugged into a low-wattage APC Back-UPS (I bought it before I knew how powerful I needed mine to be) that has surge/spike protection and current modulation, so the PSU should be getting clean current.


I live in a 100-year-old house with electricity issues in a room with one two-socketed outlet. I dare not plug my machine into the wall directly, so I'll have to get back to you.

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