If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I found both my video card and the PSU in my pc emit a noise whenever the GPU is loaded. If the scene is simple ("press a key" screen in 3D game), it squeals a constant tone, also when minimising/maximising a 3D application. When I actually play the game, the noise emitted is more like a hiss and less noticable.
I got this idea, would winding one turn of the video card power cable (all wires) on a ferrite ring improve the noise, or is this asking for "inductive kickback" problems and possible damage to the GPU?
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
Is this noise coming from your speakers or from the devices themselves?
Ferrite rings of the right type should not create any problems. If the signal is at the same frequency as the sounds you hear it is not a good idea to filter it out since it will cause the voltage to droop and possibly make the computer less stable. A modern PC needs a very good frequency response from the power suppply to work properly.
If the sound has not always been there it might be that you have some damaged capacitors on the graphics card or motherboard that causes more high frequency components to reach the PSU and creating more work for the regulators on the graphics card.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Bjørn wrote ...
If the sound has not always been there it might be that you have some damaged capacitors on the graphics card or motherboard that causes more high frequency components to reach the PSU and creating more work for the regulators on the grpahics card.
The PC is new, it has been doing it since I built it, and yes, the sound comes from the components themselves It's not really that annoying, when it's hissing it is barely audible. I'm not at all surprised it does this, as the GPU eats 100+W loaded, if it causes 10 amp surges on the 12V line, something might buzz...
I have a small ring that came with the case, I might try using that.
Edit: I'll also try my old PSU. I think I haven't heard the noise with the od PSU, but I've replaced it because it was noisy, so the buzz might have gotten lost in the noise of PSU and CPU fan (I also replaced the CPU heatsink so it's all super silent now )
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
I had the exact same problem with one of my builds once. It was a PSU problem I remember. You can either get one rated for more power or that's better engineered. Alternatively you can fix it yourself. I found putting a mains input filter in the PSU halved the noise (no, it didn't have one installed stock. The required PCB traces, holes and component outlines were there though. ) I've also heard of people encasing the PSU magnetics in epoxy to limit mechanical movement, I'm not sure how effective this is however.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Well, the PSU is of the quality ones, it's just not really that powerful (400W). I'm pretty sure it has all filters installed and the components are correctly rated. I bought that after reading reviews of the cheap crap that blows up with 2/3 of their power rating applied 8-o
But its wierd it also comes from the GPU, could a more powerful PSU fix also that? I might also try to do a "mod" myself and put some low-ESR electrolytics and film decoupling caps near the GPU power connector...
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Do you get the noise in the computer audio as well? I remember that was the real problem I had, and now I can't remember if I really heard it from the components too.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Uzzors wrote ...
Do you get the noise in the computer audio as well? I remember that was the real problem I had, and now I can't remember if I really heard it from the components too.
I think the audio is fine. The video card draws its power from an extra connector so the high current does not pass through the mainboard and can't affect the audio chip.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I just discovered a weird thing, there is a buzzer on the video card which seems to generate part of the noise for some reason. Curiously enough, there is an unconnected jumper next to the buzzer, and even more curiously, this jumper is electrically connected to the buzzer terminals. Theoretically, "jumping" this jumper will shut the buzzer up. Practically, do you think it is a safe thing do to?
Registered Member #618
Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
Maybe, But first lemme ask, is your GFX card fan dirty from dust build up, even though you said its new? If there is dust build up, nad your GFX card can (and should be able to be removed) remove it! then remove the fan, most decent quality cards have 4 screws olding the fan to the sink. Once the fan is removed flip it over you SHOULd see a clamp clipped to the drive shaft of the fan, carefully pop off the clamp and slide the fan out of the hold. Inside the underside of the front of the fan you should se the fan bearing, lube it down with some wd40 or whatever you got thats similar, and clean out that bearing, put it all back together and that should solve your noise.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I don't think the fan is the problem, there's no dust at all, and it makes the noise only under load (fan spins all the time). Thanks for the advice anyway.
Today I'm gonna measure the voltage on the buzzer and if it's more or less zero, I'll go ahead and short it out.
Edit: I shorted it and it still makes noise! now THATs weird. Guess I'll have to cover it with something... (don't want to lose warranty by unsoldering it)
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
How to fix the buzzing noise
)
The required PCB traces, holes and component outlines were there though. ) I've also heard of people encasing the PSU magnetics in epoxy to limit mechanical movement, I'm not sure how effective this is however.
now THATs weird. Guess I'll have to cover it with something... (don't want to lose warranty by unsoldering it)