Question Seasonic M12II EVO Replacement fan

Oct 19, 2021
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Hello,
I have Seasonic M12II EVO PSU 7 or 8 years old and still working good, few days ago some strange noise comes from my PC case and i find that comes from PSU fan, fan is definitely dead.
Now i have a problem to find any appropriate fan to replace current one, this PSU when is cold start from 2V fan and that is generaly problem, 99% of fans won't start on 2V because staring voltage is for most of them 5-7V, any suggestion where i can find any replacment fan for this PSU because i realy like this Seasonic, capacitors still looks like 0 days old after 7 years, quality is very good, and is stupid to spend money for new PSU because just of fan.

This is current fan in PSU and this one should be replaced, the bearings are bad and that is problem.




I test many of them, i have thermaltake, arctic,cooler master and etc.. all of this fans runs after 4,5V.
I found one no name which is run at 2.8V but this means when i start PC this fan won't start in PSU until PSU start incesing voltage and this means hotter.

One of solution is to connect PWM fan directly on motherboard but i don't like this, i mean PSU should control fan speed not mobo.
 

--SID--

Respectable
Jan 23, 2021
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What exact model. The 520w version? It's not worth to replace the fan. Replace the PSU, because it's not good. Bad voltage regulation due to the groupregulated design, bad protections and agressive fanprofile that makes it very loud at mediocore and high loads.
 
Oct 19, 2021
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Yeah but minimum order is 24 fans :(

What exact model. The 520w version? It's not worth to replace the fan. Replace the PSU, because it's not good. Bad voltage regulation due to the groupregulated design, bad protections and agressive fanprofile that makes it very loud at mediocore and high loads.
Yes 520W, I don't know but all this years i have stable voltage and fan noice on minimum never had any problems
 
Oct 19, 2021
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On elecok $36.98 fan + shipping, maybe worth to get from this site.
But also this one from my PSU is

KF1225B1H-R
on elecok
KF1225B1HR-R

Not sure if this two fans is same ?


Yeah i was try to find some used fan from other PSU and i found 2 but again fan is working above 3V, i can't find the same faulty PSU to get just fan.
 

--SID--

Respectable
Jan 23, 2021
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From where do you order parts? Amazon has several fans that should be compatible with the Jamicon fan you have.


There is also AliExpress.
The Jamicon is a 2200 rpm fan so it has to be replaced with a 2200 rpm fan.
On elecok $36.98 fan + shipping, maybe worth to get from this site.
That's much more than the PSU is worth. If you have to replace the fan by somethings that expensive like this you better buy a new PSU.
 

Satan-IR

Distinguished
Ambassador
I would replace the PSU. How do you know you've had good stable and clean voltage throughout the years? Unless you had testing equipment.

PC not having any dramatic problems doesn't mean voltage is always good. Spending 37$ on fan replacement for a 7-8-year-old PSU is not the best choice to me either.
 
Reactions: Milan.90
Oct 19, 2021
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I just can see what some software reporting under heavy load and voltage was stable and also PSU was cold.
Yeah maybe is best to get new PSU because of fan price, so i will need minimum 100usd to get new one because seasonic core or focus series is more than 100usd here :(
 
Hello,
I have Seasonic M12II EVO PSU 7 or 8 years old and still working good, few days ago some strange noise comes from my PC case and i find that comes from PSU fan, fan is definitely dead.
Now i have a problem to find any appropriate fan to replace current one, this PSU when is cold start from 2V fan and that is generaly problem, 99% of fans won't start on 2V because staring voltage is for most of them 5-7V, any suggestion where i can find any replacment fan for this PSU because i realy like this Seasonic, capacitors still looks like 0 days old after 7 years, quality is very good, and is stupid to spend money for new PSU because just of fan.
How do you know it's still working good? Because it turns on and off?

The fan is the first thing to die in a PSU and it means something else is bound to die shortly thereafter.

You have an old PSU that wasn't very good to begin with. PSUs are way more than capacitors. And capacitor condition is either going to be "like new" or bulging. There is no in between. How are the MOSFETs? The ICs? Is the thermal compound between the silicon parts and the heatsinks still in good shape or has it dried up?

My point is: It's time to send it to eWaste and get a new one.
 
Oct 19, 2021
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Do you have a link to a shop? I have looked at elecok but found nothing reasonable.
Can you order from Gemany or Austria?
For PSU i have looking here it's a local shop and near me
https://gigatron.rs/racunari-i-komponente/komponente/napajanja

Also this one looks interesting it's about 80usd
https://gigatron.rs/napajanja/seasonic-napajanje-650w-ssr-650gb3-341836


And yes i can buy from Austria or Germany but shipping + customs i need to pay so i think final price can be same.
 

--SID--

Respectable
Jan 23, 2021
1,864
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That's not a good PSU

https://gigatron.rs/napajanja/corsair-napajanje-550w-cx550f-rgb-cp-9020216-eu-451289
https://gigatron.rs/napajanja/msi-napajanje-mpg-series-a750gf-750w-403331

From Germany/Austria
https://geizhals.de/corsair-cx-f-rgb-white-series-cx750f-rgb-cp-9020227-eu-a2363369.html?hloc=at&hloc=de
https://geizhals.de/bitfenix-whisper-m-650w-atx-2-4-bwg650m-bp-wg650umag-9fm-a1543239.html?hloc=at&hloc=de
 
Oct 19, 2021
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Thank you for suggestion @--SID--
TUF-GAMING-650B is something about 80usd it's not too much and looks good.
Also SEASONIC CORE-GC-650 i can buy for 100usd so what you think about this or better to stay on TUF-GAMING-650B ?

Also TUF-GAMING-650B fan is working on minimum 800RPM when is on, this can be little bit loud?
 
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