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Title: PSU Buzzing Post by: notaek on May 25, 2013, 05:31:56 AM _
Title: Re: PSU Buzzing Post by: ssateneth on May 25, 2013, 05:40:03 AM Probably just an choke. They vibrate if they aren't secured while under load. They are usually coated with a hardened resin or plastic to prevent this, but if it loosens up, it'll make a buzz/squealing noise when under load due to the magnetic properties of electrical current running through a coil.
Nothing to really worry about unless the noise bothers you. Title: Re: PSU Buzzing Post by: notaek on May 25, 2013, 05:44:11 AM Probably just an choke. They vibrate if they aren't secured while under load. They are usually coated with a hardened resin or plastic to prevent this, but if it loosens up, it'll make a buzz/squealing noise when under load due to the magnetic properties of electrical current running through a coil. Nothing to really worry about unless the noise bothers you. Thanks. It is pretty annoying but at least I am not afraid of it blowing up any more Title: Re: PSU Buzzing Post by: induktor on May 25, 2013, 05:56:19 AM Hello
If the pitch of the noise is high, let's say something like 8Khz I is more likely some capacitor of the output stage that has ESR, it could be a good idea to replace them. usually there are visual effects as well but not always, they could be inflated, or lifted off from the board like 1/2 centimeter, better check them out. It also could be one loose inductor like ssateneth said, but I am more inclined by the capacitor's problem, a tipical problem if you used the PSU at high temperature. Title: Re: PSU Buzzing Post by: notaek on May 25, 2013, 06:04:12 AM Hello If the pitch of the noise is high, let's say something like 8Khz I is more likely some capacitor of the output stage that has ESR, it could be a good idea to replace them. usually there are visual effects as well but not always, they could be inflated, or lifted off from the board like 1/2 centimeter, better check them out. It also could be one loose inductor like ssateneth said, but I am more inclined by the capacitor's problem, a tipical problem if you used the PSU at high temperature. Title: Re: PSU Buzzing Post by: induktor on May 25, 2013, 06:09:30 AM really depends on how you have used the PSU (temperature, time online and %load) and specially, the quality of the output capacitors.
I don't know OCZ PSU's so I cannot comment, just guess, I use coolermaster, they are expensive, but superb quality an efficiency. Title: Re: PSU Buzzing Post by: pekv2 on May 25, 2013, 02:43:01 PM Probably just an choke. They vibrate if they aren't secured while under load. They are usually coated with a hardened resin or plastic to prevent this, but if it loosens up, it'll make a buzz/squealing noise when under load due to the magnetic properties of electrical current running through a coil. Nothing to really worry about unless the noise bothers you. Yes. @notaek, if you can find the culprit, and have a hot glue gun, sometimes you can fix the vibration with hotglue from a hotglue gun, to secure it again. So I've read. Title: Re: PSU Buzzing Post by: computerparts on May 26, 2013, 12:33:10 AM There is a bee inside. Be careful or it will sting you.
Title: Re: PSU Buzzing Post by: notaek on May 26, 2013, 12:34:15 AM There is a bee inside. Be careful or it will sting you. I knew that's what it was! |