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Power supply issue

By ahmednoda2008 ·
Guys I have very weird problem. I have huntkey 550W PSU which was running for like 2 months clearly. Then i moved my desktop to other room in the house recently. After a while i started hearing very annoying buzzing sound from the psu. I disconnected it completely from Motherboard and the sound remained. Not a fan sound it appears if there is electricity coming to the psu whether the fan is spinng or not. And then sometimes the sound is not here and its clearly quite. Changed the power cord and nothing happened. When i move the computer to other room the sound is not there. I came with electrical engineer and he told me all the house has good electric currency and there should be no issue. The sound comes only "sometimes" when im in my room and in any power port within my room. Outside it no sound. I dont know if that is whats called a coil whine or not.

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