The Corsair User Forums  

Go Back   The Corsair User Forums > Corsair Product Discussion > Power Supplies

Notices

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Old 08-29-2010, 10:10 PM
roragnarok roragnarok is offline
Registered User
 
Join Date: May 2010
Posts: 15
POST ID # = 463954
roragnarok Reputation: 10
Default HX850W HX750W Electrical Noise

Hi,
I am making a new thread, because I'm experiencing the problem again.
This morning I noticed that my other PC now installed with HX750W is at standby and is making a strange electrical noise.
The HX750W is 2 month old, HX850W is only 1 day old.
This type of noise is audible in range within 1 meters distance.
I investigated this noise further, and heard it also on the HX850W when:
1. PC is in Standby / sleep
2. PC is shutdown, powered off, PSU switch is at On or Off with ON making noise louder then with its switch at OFF state.
This noise sounds like a "ZZ" or "SS" type of noise.
Further to investigate this problem I removed all connections to and from the PSU HX850W.
Supplying only the main power from wall, by switching on.
I can hear this very annoying noise, "S" type of noise and the capacitor's high pitched noise (alternating pitch) while I switch off the main power on the wall.

With nothing connected at the output of the psu or with the PSU connected to the system, motherboard, peripherals etc.
The noise is now very noticeable as soon as I switch on the main power on the wall.
This problem is both the same with the HX850W or HX750W.

Both PSU are pretty expensive, and I don't expect such fault and is now quiet disappointed...

What is going on ???
Reply With Quote


  #2  
Old 08-30-2010, 12:09 AM
Wired's Avatar
Wired Wired is offline
Administrator
Wired's PC Specs
 
Join Date: Aug 2000
Posts: 32,193
POST ID # = 463961
Wired Reputation: 32
Default

Tried moving it to a different outlet / circuit?
__________________
No, I don't work for Corsair
...you need to flow like a river...
Forum Rules
Admin of this forum / webdesignforums.net / Petri's IT Forum / The Corsair Memory Steam Group
Founder/Creator/Admin of ZE SECRET PROJECT (Coming Soon)
Reply With Quote


  #3  
Old 08-30-2010, 01:21 AM
roragnarok roragnarok is offline
Registered User
 
Join Date: May 2010
Posts: 15
POST ID # = 463965
roragnarok Reputation: 10
Default

Quote:
Originally Posted by Wired View Post
Tried moving it to a different outlet / circuit?
Yes, moved the PC physically to another room in the house and the issue persists.
Tests done when PC is not on:
When nothing connects to the output of HX850W PSU I can hear the capacitor leaking sound high pitched.
When PSU output are connected the capacitor leaking sound (high pitched alternating sound) is not there.
What I am hearing is strange white noise "S" "Z" type noise coming out of the PSU while PC is powered off or is in standby state.
It is almost like I am hearing the flow of electricity current within the PSU component.
This is pretty damn annoying.
Reply With Quote


  #4  
Old 08-30-2010, 02:34 AM
roragnarok roragnarok is offline
Registered User
 
Join Date: May 2010
Posts: 15
POST ID # = 463967
roragnarok Reputation: 10
Default

For some very weird reason the electrical noise went low after some time.
This is with psu output ports connected to motherboard etc.
I'm not sure if this has something to do with accessing another electrical appliances in the house.
While in another room, although I can still hear it, now the volume of the noise becomes as low as how I describe it yesterday (faint noise) but the same type of noise.
Reply With Quote


  #5  
Old 08-30-2010, 06:02 AM
roragnarok roragnarok is offline
Registered User
 
Join Date: May 2010
Posts: 15
POST ID # = 463978
roragnarok Reputation: 10
Default

The situation went away in both PC PSU after few hours, when the system is powered off I still can hear faint "ZZ" noise coming from HX850W only when I'm within 5 cm distance.
I guess it is caused by some vibrations as described in http://forum.corsair.com/v3/showthread.php?t=85166
But I can't confirm...
Reply With Quote


  #6  
Old 08-30-2010, 12:23 PM
RAM GUY's Avatar
RAM GUY RAM GUY is offline
Corsair Product Guru
 
Join Date: Apr 2001
Location: Fremont, CA
Posts: 118,267
POST ID # = 464045
RAM GUY Reputation: 10
Default

The noises would not indicate any increased chance of failure or any risk of damaging your components, however if the noise is loud enough to be bothersome then we can certainly try replacing it for you, just Request an RMA.
__________________
Support accounts and tickets can be created at https://support.corsair.com.
Reply With Quote


  #7  
Old 09-13-2010, 03:56 AM
roragnarok roragnarok is offline
Registered User
 
Join Date: May 2010
Posts: 15
POST ID # = 466262
roragnarok Reputation: 10
Default

Quote:
Originally Posted by RAM GUY View Post
The noises would not indicate any increased chance of failure or any risk of damaging your components, however if the noise is loud enough to be bothersome then we can certainly try replacing it for you, just Request an RMA.
Hello, thanks for reply.
IMO, I decided not to RMA at this stage because it didn't happen again.

I don't know how or why but I think something in the electricity is weird that other day was the cause.
I'll return if I have more problems with the PSU.
Also RMA wasn't a smart choice for my computers won't operate without PSU if for weeks and they're still brand new, cost too much for RMA.
I hope it won't happen again.
Reply With Quote


Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:08 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.