[SOLVED] Bad Power supply fan or Imbalanced?

[devo343]

PSU is a rosewill 450Z RD

ive had it for about a year and in a half and the fan has started making noise.

What i wanna know is if the fan is going bad or is it imbalanced?


video to show what i mean

screwdriver to stop the fan from spinning to pinpoint if that was the cause.

Fan

 

[jay32267]

It's usually difficult for me to diagnose from a recording however...
Unless something is interfering with the blades...I don't think there is anything you are going to be able to do to fix it and I would replace it.
Fans of this size generally don't "become" unbalanced unless the bearings go bad in which case the fan needs replacement.
If the fan isn't unbalanced...but the bearings are just noisy...it still should be replaced as noise is a sign of wear.

 

[devo343]

It's usually difficult for me to diagnose from a recording however...
Unless something is interfering with the blades...I don't think there is anything you are going to be able to do to fix it and I would replace it.
Fans of this size generally don't "become" unbalanced unless the bearings go bad in which case the fan needs replacement.
If the fan isn't unbalanced...but the bearings are just noisy...it still should be replaced as noise is a sign of wear.

yeah ive allready contacted rosewill about the fan they said they can probably send me a replacement fan if its in stock if not i could prob get a noctua fan to put in there.

 

[jay32267]

yeah ive allready contacted rosewill about the fan they said they can probably send me a replacement fan if its in stock if not i could prob get a noctua fan to put in there.

Fans generally come in pretty standard sizes and voltages.
I wouldn't be surprised if you could find a variety of fans that would work.
This is one of my suppliers.
There are 2398 DC axial fans here.
https://www.newark.com/w/c/cooling-thermal-management/fans-blowers/dc-axial-fans?ost=fans

 

[TommyTwoTone66]

Sounds like a fan with a failed bearing. I would get the Noctua fan now. They last years and years and are as quiet as you can get

Any replacement that Newegg send is just going to be the same bottom-tier fan that you had before and will be much louder than the Noctua fan, even before the bearing fails.

Be extremely careful when replacing the fan since PSUs can still hold a lot of voltage when unplugged.

 

[devo343]

Sounds like a fan with a failed bearing. I would get the Noctua fan now. They last years and years and are as quiet as you can get

Any replacement that Newegg send is just going to be the same bottom-tier fan that you had before and will be much louder than the Noctua fan, even before the bearing fails.

Be extremely careful when replacing the fan since PSUs can still hold a lot of voltage when unplugged.

Any good 120m Noctuas you recomend that would work good with a PSU note this fan is thermal regulated so idk how the pinouts would work

 

[TommyTwoTone66]

This video has a good recommendation although not sure if the fan is thermally regulated so it might just run all of the time. If its silent that shouldn’t matter and might actually help with airflow in your case, depending on its configuration.

View: https://youtu.be/CjJiiY-FIds

 

[TommyTwoTone66]

Just an update to say I checked and Noctua do not currently offer any fans with built in temperature control, so if you do swap it for that NF-A12x25 PWM it will not have temp control built in.

Although I’d be surprised if it was the fan doing the temp monitoring and not the PSU. Does your PSU fan definitely have temperature control?

 

[devo343]

Just an update to say I checked and Noctua do not currently offer any fans with built in temperature control, so if you do swap it for that NF-A12x25 PWM it will not have temp control built in.

Although I’d be surprised if it was the fan doing the temp monitoring and not the PSU. Does your PSU fan definitely have temperature control?

i have no clue all i know is when it starts getting hot the fan speed will kick up

 

[devo343]

Also how long do you think before the fan fails all together because right now its still cooling the psu its just varying levels of noisy

 

[devo343]

Was able to give the fan some oil to maybe increase the lifespan of it a little noise is much better but still there a little

View: https://youtu.be/uKyRg44nFyw

 

[jonnyguru]

yeah ive allready contacted rosewill about the fan they said they can probably send me a replacement fan if its in stock if not i could prob get a noctua fan to put in there.

Do NOT put a Noctua in there.

PSU manufacturers don't use Noctua's blade design in PSU because they SUCK.

Besides, why put a fan in there that argually costs more than the PSU? It's literally the cheapest PSU out there. I'm surprised that after a year, the fan is the only thing that's failed.

 

[devo343]

Do NOT put a Noctua in there.

PSU manufacturers don't use Noctua's blade design in PSU because they SUCK.

Besides, why put a fan in there that argually costs more than the PSU? It's literally the cheapest PSU out there. I'm surprised that after a year, the fan is the only thing that's failed.

its not the cheapest then what fan would you recommend then?

 

[jonnyguru]

its not the cheapest

It is. It's literally Rosewill's most entry level PSU. They don't have one that is lower quality. I'm not kidding. I'm surprised it's lasted this long.


If Rosewill can't send you the fan designed to work in that PSU, replace the PSU.

 

[TommyTwoTone66]

Do NOT put a Noctua in there.

PSU manufacturers don't use Noctua's blade design in PSU because they SUCK.

Besides, why put a fan in there that argually costs more than the PSU? It's literally the cheapest PSU out there. I'm surprised that after a year, the fan is the only thing that's failed.

Nonsense. Please refrain from spreading misinformation.

A fan is a fan. So long as it shifts enough air, it will cool the PSU. The CFM of the A12x25 will certainly be higher than the no-brand, bottom-tier Rosewill fan that came with the PSU, so you will be improving the cooling while reducing noise.

Manufacturers don’t use Noctua fans because they’re too expensive and would raise the cost of the PSU, not because they “suck”.

And they don’t use the Noctua fan design because it’s patented and they would have to license it from Noctua.

The A12x25 costs around $15, which is nowhere near the cost of the PSU. It’s a lot to spend on a PSU fan, for sure, but if you want quality and silence, you have to be prepared to pay for it.

It’s just a standard, normal, 12V, 120mm PWM fan. There’s nothing special about it and absolutely no reason to replace like for like, and actually pretty much any other fan you can buy will be better than the Rosewill one.