how to eliminate buzz in power supply

lordofscones · Post by **lordofscones** » Sun Nov 27, 2011 1:07 pm

I thought my Kronos had a strange buzz emanating from the far left hand side, until noticed my PC in the same room has it too...and they both come and vanish at the same time, and one machine can have it when the other is off, so I am guessing it is something common...perhaps external interference or something in the power supply?

Could anyone recommend a fix? Any kind of filters I can put in place?

Cheers.

Carbon Trader · Post by **Carbon Trader** » Sun Nov 27, 2011 1:45 pm

I don't know if the search function is currently enabled but there was a thread running a few months back on this subject.

Post by **Sharp** » Sun Nov 27, 2011 1:47 pm

Something on that line between you and the fuse box is causing this, like a Heater, Motor or Dimmer Switch.

You can either plug the KRONOS into a different socket that's not on the same line between you and the Fuse Box, or you need to clean the power line.

To clean the line, simply buy a UPS with that function built in. In fact, and I cannot stress this highly enough. EVERYONE should buy a UPS with.

Not only will it clean the line, it will protect your equipment by ensuing that it gets a very stable supply. Make sure you get one with a Brownout function.

Regards
Sharp

johnnydr · Post by **johnnydr** » Mon Nov 28, 2011 2:27 am

I'm about to purchase something to plug my gear into .Would a Furman power conditioner give you the same protection?

lordofscones · Post by **lordofscones** » Mon Nov 28, 2011 2:33 am

Thanks everyone. Some great replies. I'll get a UPS.

Sina172 · Post by **Sina172** » Mon Nov 28, 2011 3:02 am

navydave · Post by **navydave** » Mon Nov 28, 2011 4:51 pm

lordofscones wrote:I thought my Kronos had a strange buzz emanating from the far left hand side, until noticed my PC in the same room has it too...and they both come and vanish at the same time, and one machine can have it when the other is off, so I am guessing it is something common...perhaps external interference or something in the power supply?

Could anyone recommend a fix? Any kind of filters I can put in place?

Cheers.

Try a ground lift on the laptop plug if its got a ground plug. Those little gray adapters to plug a 3 prong into a two prong outlet. This works to get rid of the noise coming out of my laptop. Dont have Kronos (yet) so I dont know if it has a ground plug. (That is if you are looking for a cheap and quick solution)

(That is, if you are referring to an audio buzz transferring into your audio. If its not then it could be something kicking on and drawing too much power possibly, making it buzz from lack of electricity getting to it. Maybe a refrigerator, etc? In that case, something like a APC BackupsPro would work too for power conditioning.) (And what Sharp said

)

PinkFloydDudi · Post by **PinkFloydDudi** » Mon Nov 28, 2011 5:29 pm

As someone that has had the power cut to their Kronos about 6 times now...I very much recommend a UPS with the Kronos!

I'm actually on my way (thank you cyber-monday deals) to get one right now...

Dniss · Post by **Dniss** » Mon Nov 28, 2011 6:31 pm

UPS OK, but be carefull if it's a power conditionner. In certain case it could shorten the life of power supplies, especially inexpensive ones.

Some of them have a passive LC filter that forces the current waveform to be out of phase with the voltage waveform. Power supplies are actually having to do more work to correct the phase differences.

Not sure about Kronos, so I'm not saying with confidence it could be a problem, but I have seen unit were it's not recommended.

So my main point here is just make sure it's OK. In most cases it is. Better be safe than sorry.

DavyP · Post by **DavyP** » Tue Nov 29, 2011 12:46 am

lordofscones wrote:I thought my Kronos had a strange buzz emanating from the far left hand side, until noticed my PC in the same room has it too...and they both come and vanish at the same time, and one machine can have it when the other is off, so I am guessing it is something common...perhaps external interference or something in the power supply?

Could anyone recommend a fix? Any kind of filters I can put in place?

Cheers.

Are you sure you are not hearing the fan noise from the Kronos???

This has been discussed previously on a number of threads.

When next to your computer you will not notice it but as soon as you switch the PC off you will notice the buzz from the Kronos.

KapnKrunch · Post by **KapnKrunch** » Tue Nov 29, 2011 7:26 am

navydave wrote:
lordofscones wrote:I thought my Kronos had a strange buzz emanating from the far left hand side, until noticed my PC in the same room has it too...and they both come and vanish at the same time, and one machine can have it when the other is off, so I am guessing it is something common...perhaps external interference or something in the power supply?

Could anyone recommend a fix? Any kind of filters I can put in place?

Cheers.
Try a ground lift on the laptop plug if its got a ground plug. Those little gray adapters to plug a 3 prong into a two prong outlet. This works to get rid of the noise coming out of my laptop. Dont have Kronos (yet) so I dont know if it has a ground plug. (That is if you are looking for a cheap and quick solution) (That is, if you are referring to an audio buzz transferring into your audio. If its not then it could be something kicking on and drawing too much power possibly, making it buzz from lack of electricity getting to it. Maybe a refrigerator, etc? In that case, something like a APC BackupsPro would work too for power conditioning.) (And what Sharp said )

DANGER! Using one of these "little gray adaptors" should ONLY be used to help diagnose the source of the buzz. These things can KILL.

Read here for more: http://en.wikipedia.org/wiki/Cheater_plug

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