slyphnier Posted November 12, 2010 Share Posted November 12, 2010 i just want to know whether this is normal or not when i plug to UPS and it running with power line its normal but when the power switched to UPS (Battery power on) i heard loud buzzing even if the PSU off (the switch is off / not standby) when the PSU on (standby) the buzzing still there but not as loud as when it off the APC UPS is the stepped sinewave one is that normal ? please help Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 12, 2010 Corsair Employee Share Posted November 12, 2010 This has been reported when using high efficiency PSUs with simulated sine wave battery backup and running off of battery power. Its nothing to worry about, just a cosmetic inconvenience more than anything else. Link to comment Share on other sites More sharing options...
slyphnier Posted November 12, 2010 Author Share Posted November 12, 2010 thanks for the reply sir glad its not an issue! can i ask one more things, sorry if i sound to paranoid Every time i shutdown my pc (on standby) i can hear little buzzing, its barely though (its only become noisy if i put my hear next to the psu) i am thinking that maybe because the mobo still using some power on standy mode but what make me curious is, i didn't hear that voice when i plug the psu and turn on the psu (standy mode) and the buzz only came after shutdown it will go away if i turn off the psu can i get explanation for that please? i am sure nothing wrong with the psu, but i just curious Link to comment Share on other sites More sharing options...
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