psu My PSU sounds like a lawn mower!

[thegadgetlad]

So I recently built a system using the Corsair CX550M power supply. At first it seemed great, and did what I wanted. But after about 3 days it started making very loud noises out of nowhere. It's definitely coming from the PSU. It literally sounds like a lawn mower. My room, and system temperature are all normal, and the PC works fine. This noise happens when the PC is or isn't under load. I'm also at least 100w under the power limit of the PSU. 

 

I've tried connecting it to a wall socket instead of an extension lead and the noise has gone... for now. Is it faulty, or could it be some other factor? Is it possible that the extension lead was causing it to do that?

 

Thanks in advance.

[JakeNTech]

Just now, thegadgetlad said:

So I recently built a system using the Corsair CX550M power supply. At first it seemed great, and did what I wanted. But after about 3 days it started making very loud noises out of nowhere. It's definitely coming from the PSU. It literally sounds like a lawn mower. My room, and system temperature are all normal, and the PC works fine. This noise happens when the PC is or isn't under load. I'm also at least 100w under the power limit of the PSU. 

 

I've tried connecting it to a wall socket instead of an extension lead and the noise has gone... for now. Is it faulty, or could it be some other factor? Is it possible that the extension lead was causing it to do that?

 

Thanks in advance.

Its probably the fan, I had that on my PSU, if the fan is facing up it sounds terrible; if its new then just return it. 

[thegadgetlad]

Just now, fixitnow said:

Its probably the fan, I had that on my PSU, if the fan is facing up it sounds terrible; if its new then just return it. 

Just to be clear the fan is facing downwards and is by an air vent so it should have access to air.

[Merp83]

3 minutes ago, thegadgetlad said:

Just to be clear the fan is facing downwards and is by an air vent so it should have access to air.

Does it sound like a rattle? What case do you have and what GPU, I've encountered many things like this and I have achieved a fix

[thegadgetlad]

1 minute ago, Merp83 said:

Does it sound like a rattle? What case do you have and what GPU, I've encountered many things like this and I have achieved a fix

NZXT S340, ASUS DUAL GTX 1060 6GB OC. 

 

The noise doesn't sound like a rattle, more of a humming sound like a lawn mower. Sometimes it sounds like it's revving up and down, like someone moving their foot on an accelerator pedal. It's also very very loud, to the point where the PC is unusable. 

[Ryujin2003]

1 minute ago, thegadgetlad said:

NZXT S340, ASUS DUAL GTX 1060 6GB OC. 

 

The noise doesn't sound like a rattle, more of a humming sound like a lawn mower. Sometimes it sounds like it's revving up and down, like someone moving their foot on an accelerator pedal. It's also very very loud, to the point where the PC is unusable. 

might be a bad bearing getting caught and ground up?

[thegadgetlad]

Just now, Ryujin2003 said:

might be a bad bearing getting caught and ground up?

I don't know what that means, but I assume it must be faulty?

[Ryujin2003]

Just now, thegadgetlad said:

I don't know what that means, but I assume it must be faulty?

The fan has bearings in side of it. Like small round metal bb's. If one has a defect in the surface that creates a rough spot, it could be getting caught while the fan is being spun, which would cause the fan to potentially seize and then force its way through the friction, causing the bearing to rub and tumble and make all sorts of horrible sounds.

 

[Vargi]

before you do anything the the PSU reseed your RAM and graphics card.  if that doesn't help then it must be the power supply.  

 

[Merp83]

2 minutes ago, thegadgetlad said:

NZXT S340, ASUS DUAL GTX 1060 6GB OC. 

 

The noise doesn't sound like a rattle, more of a humming sound like a lawn mower. Sometimes it sounds like it's revving up and down, like someone moving their foot on an accelerator pedal. It's also very very loud, to the point where the PC is unusable. 

Try push the bearing down on the fans - case fans and all. Case fans on an nzxt case are not that good. Try using an overclocking programme to max speed the cpu fan and gpu fan and then put the gpu fan on idle (off) ... Then try flip over the power supply and make sure no cables and touching any fans etc.If that does not work. Carefully remove the grill from the power supply and with your finger give the fan a spin and see if you can see any contact with metal or cable- then try to gently sway the case from side to side and try then. Also please tell me if it starts instantly or when the computer has warmed up ( may be making this sound due to expanding of metal once pc has warmed up. Finally see if the GPU is touching anything e.g. a wireless network card. If you could please a take a couple pictures of the inside of your computer... Otherwise seek warranty advice. If I can think of more solutions I will tell you.

[thegadgetlad]

1 minute ago, Merp83 said:

Try push the bearing down on the fans - case fans and all. Case fans on an nzxt case are not that good. Try using an overclocking programme to max speed the cpu fan and gpu fan and then put the gpu fan on idle (off) ... Then try flip over the power supply and make sure no cables and touching any fans etc.If that does not work. Carefully remove the grill from the power supply and with your finger give the fan a spin and see if you can see any contact with metal or cable- then try to gently sway the case from side to side and try then. Also please tell me if it starts instantly or when the computer has warmed up ( may be making this sound due to expanding of metal once pc has warmed up. Finally see if the GPU is touching anything e.g. a wireless network card. If you could please a take a couple pictures of the inside of your computer... Otherwise seek warranty advice. If I can think of more solutions I will tell you.

Thank you very much sir, I'll give that a try

[Zando_]

15 minutes ago, thegadgetlad said:

Just to be clear the fan is facing downwards and is by an air vent so it should have access to air.

Same here. I've got the CX450M, and a quick slap on the top seems to fix it. It seems to be the fan bearings rattling or something. If it keeps doing it, I'll RMA the PSU.

[Stefan Payne]

Probably the Hong Hua Fan.

Have read negative comments about ticking noise and thought at the time it was the Yate Loon Fans they used.

 

But it seems it's rather common with Hong Hua fans. And I have one that's hella loud in ticking - the worst sleeve bearing fan I've ever heard in terms of Motor Noise...

 

So just replace the PSU, the next one might be better...

[Guest]

23 hours ago, Stefan Payne said:

Probably the Hong Hua Fan.

Have read negative comments about ticking noise and thought at the time it was the Yate Loon Fans they used.

 

But it seems it's rather common with Hong Hua fans. And I have one that's hella loud in ticking - the worst sleeve bearing fan I've ever heard in terms of Motor Noise...

 

So just replace the PSU, the next one might be better...

No.

 

The ticking in the Hong Hua fans is an electrical "click" at low RPMs coming from the stator.  It's barely audible, but Germans can hear it.  They've since addressed this with more windings on  the motor.  

 

This sounds like a bad bearing or the impellers are out of balance.

[TVwazhere]

On 8/9/2017 at 10:25 AM, thegadgetlad said:

It literally sounds like a lawn mower.

Flip it over, stick four wheels and a long handle on it, and get to work!

 

[Merp83]

On 09/08/2017 at 3:44 PM, thegadgetlad said:

Thank you very much sir, I'll give that a try

So did it work?

[thegadgetlad]

On 10/08/2017 at 4:25 PM, TVwazhere said:

Flip it over, stick four wheels and a long handle on it, and get to work!

 

Whilst I'm sure my lawn would benefit, my PC would not.