• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

PSU makes a strange noise while in fanless/silent mode.

rtg123

New Member
Joined
Oct 30, 2018
Messages
5 (0.01/day)
Hello first time post, I recently installed a new PSU into my computer and noticed a strange noise that happens while I'm playing a game (layers of fear) in fanless/silent mode. The noise quickly goes a way when I press the switch on the back of the PSU and turn the fan on. I've recorded the noise and posted it up on youtube here, try to ignore the noisy case fan above:


Can anyone tell what this noise is? The PSU is a Seasonic focus+ gold 750fx
 
Last edited:
Joined
Mar 2, 2011
Messages
979 (0.31/day)
Location
Omaha, NE
System Name It's A-L-I-V-E...Perfect 1080p gaming!
Processor Ryzen 5 2600
Motherboard Asrock Fatal1ty AB350 Gaming-ITX/ac
Cooling Cryorig M9A w/ be quiet! PURE Wings 2 ~ 92mm
Memory G.SKILL Ripjaws V ~16GB(2 x 8GB) ~ DDR 4 3200
Video Card(s) Sapphire PULSE Radeon RX 580 8GB
Storage Samsung 860 EVO - 500 GB
Display(s) Dell S2715H
Case In the market for a new case...need ideas!
Audio Device(s) Realtek ALC1220
Power Supply EVGA SuperNOVA 550 G3
Mouse Logitech Zone Touch Mouse - T400
Keyboard iKBC CD108 ~ Cherry MX Blues
Software Debian Buster 10/Windows 10
Benchmark Scores The whole system is dead silent at 18 inches.
Welcome to TPU! :)

Being a "serious" tinnitus sufferer, I'm always on the lookout for strange noises....I know I've heard plenty. The first thing I do in a new build is stick my ear down by a) the chipset, especially on Intel motherboards, and b) the power supply. If both of those check out...I'm usually happy as long as I'm not hearing any high pitch whistling in the air.

So, from listening 5 times...I have to tell you I was having flashbacks to my old floppy drives. Kind of a grinding noise, but I'm not familiar with it. Almost sounds like a hard drive vibrating against bare metal.

Seems kind of odd that this happens when you turn the fan off...instead of on. Thought it might be a fan blade just touching a wire or something. I've had that happen to me once on a Seasonic M12 II 520.

I'm sure some of the other guys will have better ideas...:).

Best,

Liquid Cool
 
Last edited:

rtg123

New Member
Joined
Oct 30, 2018
Messages
5 (0.01/day)
Yeah I know the feeling, I suffer for tinnitus as well and tend to be extra sensitive with noises; maybe that's how i noticed this sound. Now that you mention it does kind of sound like a floppy or a hardrive... It's worth mentioning that I don't have either installed in this PC. I'll try taking the psu out the pc and checking the fan to make sure nothing is hitting it.

EDIT: I checked, nothing is hitting it the fan as far as i can tell.
 
Last edited:

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
27,876 (6.17/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Whats your complete system specs please
 

rtg123

New Member
Joined
Oct 30, 2018
Messages
5 (0.01/day)
i7 - 5820k (stock speed)
RTX 2080 FE (stock speed)
16GB ram ddr4
Samsung 850 evo 1 TB SSD
Crucial ct256mx100ssd1 256GB SSD
Gigabyte GA-X99-UD4 motherboard
seasonic focus+gold 750w psu
 
Last edited:

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
27,876 (6.17/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Check your motherboard, gpu.
 
Joined
Jul 25, 2006
Messages
6,051 (1.24/day)
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
Are you 100% certain the sound is coming from the PSU?

If not, gently rest your finger on your hard drive(s). Can you feel it vibrate with the noise? Gently touch the center hub of your fans and the pitch of the fan noise will change as the rotation speed changes.

Since computer cases are great for transferring sounds and causing hard to pinpoint resonating sounds throughout the case, you might have to unmount the PSU from the case and, with all the cable still connected, flop the PSU outside the case. Then verify the sound is indeed coming from inside the PSU. If it is, then it is likely loose coil or transformer windings or plates. If under warranty, send it back. If not, some strategic application of epoxy cement might stop any vibrations. But I warn you, anything that plugs into the wall can kill! So don't forget to unplug from the wall before even thinking of opening the PSU case.
 

rtg123

New Member
Joined
Oct 30, 2018
Messages
5 (0.01/day)
Yeah I took the PSU out the case and made sure it was the thing that was making the noise, also the noise goes away when I turn on the fan switch on the back of the PSU. The power supply is brand new from amazon so I thankfully don't have to try that epoxy stuff, I think I might send it back and try another one. The thing I'm worried about is if the noise is something serious, like the power supply could malfunction at any minute or something.
 

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
27,876 (6.17/day)
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Yeah I took the PSU out the case and made sure it was the thing that was making the noise, also the noise goes away when I turn on the fan switch on the back of the PSU. The power supply is brand new from amazon so I thankfully don't have to try that epoxy stuff, I think I might send it back and try another one. The thing I'm worried about is if the noise is something serious, like the power supply could malfunction at any minute or something.
Just get an exchange. Someone rmad theirs for fan noise and got one without problems
 
Joined
Jul 5, 2013
Messages
7,483 (3.22/day)
Could be coil-whine, in which case the only option is to replace the PSU. But even brand new PSU's have some level of it, so if it's not bothering you much, I say just ignore it.
 
Joined
Jul 25, 2006
Messages
6,051 (1.24/day)
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
If a PSU is designed to run in silent mode, it should be totally silent when the fan is not spinning. Period! If not totally silent, it is defective and send it back.

If marketed as "Silent", it should be expected to support HTPCs (home theater PCs) which are designed to be totally silent. When you spend a $1000, or many $1000s (or many $10s of 1000s or more!) on a nice home theater setup (and perhaps $1000s more on the home theater room itself), the last thing you need to hear in your home theater is coil-whine or transformer buzz (or even fan noise) when listening to a movie's quiet passage.
The thing I'm worried about is if the noise is something serious, like the power supply could malfunction at any minute or something.
Coil-while and transformer buzz rarely ever, if ever, result in anything serious. In fact, these devices typically keep humming (or buzzing!) along for many years without any problems. But again, if the supply is marketed as a silent supply, there should be no buzz or whine whatsoever. Send it back.
 

rtg123

New Member
Joined
Oct 30, 2018
Messages
5 (0.01/day)
Yeah it should stay silent, I'll probably send and try a new one.
 
Joined
Oct 17, 2012
Messages
9,203 (3.56/day)
Location
Massachusetts
System Name Americas cure is the death of Social Justice & Political Correctness
Processor i5 8600k
Motherboard Asrock Z370 Extreme 4
Cooling Corsair H-110i GTX
Memory 2x 4Gb Crucial Sport LT
Video Card(s) MSI GTX 980 Gaming
Storage Samsung 850 evo 250Gb
Display(s) Dell Ultra Sharp Widescreen 24" 1200P
Case Fractal Design Meshify-C
Power Supply Seasonic Focus+ 750 Gold
Mouse Logitech G502 spectrum
Keyboard AZIO MGK-1 RGB (Kaith Blue)
Software Win 10 Professional 64 bit
I have this exact power supply sitting in my computer right now, I'll hit the button and see if I hear anything different, but I don't imagine I will as it's always been perfectly silent

Edit
There's absolutely no difference on any of my focus + power supplies (have 3 of them) when I hit that button. It sounds no different in either position
 
Top