Capacitor Whine

Mike0409 · Jul 1, 2009

Alright I have a Capacitor Whine..I can't find it, it's annoying..and I need to try and find a fix.

Is there anyway to find out which cap is causing the whine? All of them look fine, none are damaged.

And if I can locate the cap, can it be replaced..It's on my EVGA 680i board.

AsRock · Jul 1, 2009

Mike0409 said:
Alright I have a Capacitor Whine..I can't find it, it's annoying..and I need to try and find a fix.

Is there anyway to find out which cap is causing the whine? All of them look fine, none are damaged.

And if I can locate the cap, can it be replaced..It's on my EVGA 680i board.

If it's the mobo try getting a RMA if thats a option. You sure it's not a coil making the noise ?. IF it is a coil maybe some hot wax on it might help.

In the past i used a rolled up piece of paper and put it by the ear and listen though it.

Mike0409 · Jul 1, 2009

AsRock said:
If it's the mobo try getting a RMA if thats a option. You sure it's not a coil making the noise ?. IF it is a coil maybe some hot wax on it might help.

In the past i used a rolled up piece of paper and put it by the ear and listen though it.

It goes with system load/idle. Doesn't do it in BIOS or during the Boot process, but once inside window's it does it.

Doesn't really do it until I start pushing some juice through it and playing with some OC setting's..so im guessing its a cap.

AsRock · Jul 1, 2009

Mike0409 said:
It goes with system load/idle. Doesn't do it in BIOS or during the Boot process, but once inside window's it does it.

Doesn't really do it until I start pushing some juice through it and playing with some OC setting's..so im guessing its a cap.

Role some A4 paper up and see if you can find it that way. could be v card or PSU unless your totally sure it's the mobo for some reason.

Error 404 · Jul 1, 2009

I've been having the same issue only with my graphics card, thanks for the tip Asrock!

Yukikaze · Jul 1, 2009

I had something similar. Around half a year ago, without any warning, my HD4870X2 started screaming under load. The whine came from the card itself, and I couldn't figure out why. I Googled around a bit, and a few issues people were having pointed out to the PSU as being the culprit. I had an old HEC Cougar 750W at the time.

I replaced the PSU with a brand new one (Hiper 880W) and the whine went away. The HEC kept running in a secondary rig for about two more months before failing (And getting replaced by a nice and quiet 330W S12-II Seasonic).

Might be worthwhile to look into.

largon · Jul 1, 2009

Capacitors cannot possibly make any sounds.

r9 · Jul 1, 2009

Coils then. And try with another PSU.

InnocentCriminal · Jul 1, 2009

I have this problem but with USB devices, it's so odd. The more devices I add, the louder the whines get.

AsRock · Jul 1, 2009

AsRock said:
Role some A4 paper up and see if you can find it that way. could be v card or PSU unless your totally sure it's the mobo for some reason.

You could all so use a paper towel tube too

. Never find one when i want one though.

lemonadesoda · Jul 1, 2009

largon said:
Capacitors cannot possibly make any sounds.

But they can be the cause of the whine. Basically, they are not "smoothing" or "storing" charge without introducing additional harmonic frequencies to the original AC source. A better capacitor can remove/reduce this fail-to-smooth or the harmonic signal generation.
And hence FIX the issue.

ANALOGY: A child with his hand caught in the door cannot make a sound. Wait. Right. The child will whine. But it aint the hand or the door that's doing the whining.

Mike0409 · Jul 1, 2009

lemonadesoda said:
But they can be the cause of the whine. Basically, they are not "smoothing" or "storing" charge without introducing additional harmonic frequencies to the original AC source. A better capacitor can remove/reduce this fail-to-smooth or the harmonic signal generation.
And hence FIX the issue.

ANALOGY: A child with his hand caught in the door cannot make a sound. Wait. Right. The child will whine. But it aint the hand or the door that's doing the whining.

Thanks.

I think I found the problem. It's around the NB...but im not sure which cap is causing it, or if it is a cap causing it. It sound's like it's coming from the chipset itself...and the Chipset is also getting extremely hot..even with the fan.

Could the motherboard actually be making the sound? Caused by just age and heat from the PC?

Would it be recommended to just replace all of them in that area?

http://img.techpowerup.org/090701/board-bigE.jpg

(Uploaded an image so all can see the area im talking about)

largon · Jul 1, 2009

lemonadesoda said:
But they can be the cause of the whine. Basically, they are not "smoothing" or "storing" charge without introducing additional harmonic frequencies to the original AC source. A better capacitor can remove/reduce this fail-to-smooth or the harmonic signal generation.

You're talking about electrical noise, one that you see with a scope. Not the audible variety the thread's about.
But yes, wrong/bad caps can make inductors to squeal.

lemonadesoda · Jul 1, 2009

How do you make an audible noise from an electrical circuit? (wait a beat). Exactly! QED.

Steevo · Jul 1, 2009

InnocentCriminal said:
I have this problem but with USB devices, it's so odd. The more devices I add, the louder the whines get.

You are experiencing bus noise.

Mike0409 · Jul 1, 2009

This is all grand, about how something can't make noise, then it can make noise, and how you can see it with a oscilloscope or not.

Bottom line is...It's making noise, It's fucking annoying, I need it fixed.

Located problem, doesn't sound like it's anything replaceable, any ideas?

Mike0409 · Jul 1, 2009

Steevo said:
You are experiencing bus noise.

http://www.inhabitat.com/wp-content/uploads/tindo-bus-2.jpg

Running on PS2 mouse/Keyboard ATM and it still doing it.

Steevo · Jul 1, 2009

Probably the two coil chokes. Hot glue them and see if it stops it, and while you are at it, try unplugging your PC speaker and speakers.

Mike0409 · Jul 1, 2009

Steevo said:
Probably the two coil chokes. Hot glue them and see if it stops it, and while you are at it, try unplugging your PC speaker and speakers.

I'll try this. Thanks.

Now how exactly do I hot glue them? Glue over top, the base?

lemonadesoda · Jul 1, 2009

FIRST. Put your fingers on them to see if that will dampen the sound. If not, the glue wont help; the problem is elsewhere. The idea of the glue is to stop them, or reduce their ability to vibrate. Fingers work too... much quicker to test if the glue will help.

Mike0409 · Jul 1, 2009

lemonadesoda said:
FIRST. Put your fingers on them to see if that will dampen the sound. If not, the glue wont help; the problem is elsewhere. The idea of the glue is to stop them, or reduce their ability to vibrate. Fingers work too... much quicker to test if the glue will help.

Thanks.

Didn't work, so i didn't try the glue.

Im starting to wonder that it's just the age of the board.

I've never had any other issue's and it run's flawlessly..just makes a racket during operation.

erocker · Jul 1, 2009

I've heard of people using nail polish to coat the noisy part.

Static~Charge · Jul 2, 2009

Well, if nothing else works, you could always get the board recapped. I've sent several motherboards to BadCaps.net for capacitor replacement. Contact him and see what he thinks about your problem.

Fitseries3 · Jul 2, 2009

"whine" and "squeel" are made by inductor coils, NOT capacitors. my 680i's had that issue but i have also heard cpus make a similar noise.

Mike0409 · Jul 2, 2009

Fitseries3 said:
"whine" and "squeel" are made by inductor coils, NOT capacitors. my 680i's had that issue but i have also heard cpus make a similar noise.

You do anything to fix it, or just ignore it swap it out?

Im hoping to get rid of it, cause I'm going to part my rig out.

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Capacitor Whine

Mike0409

AsRock

TPU addict

Mike0409

AsRock

TPU addict

Error 404

Yukikaze

largon

r9

InnocentCriminal

Resident Grammar Amender

AsRock

TPU addict

lemonadesoda

Mike0409

largon

lemonadesoda

Steevo

Mike0409

Mike0409

Steevo

Mike0409

lemonadesoda

Mike0409

erocker

*

Static~Charge

Fitseries3

Eleet Hardware Junkie

Mike0409

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