PSU Fan problem
My FSP Hydro-k pro psu have fan problem.

it happened after i play games with high cpu core usage. with some modded game.

We opened inside of the psu. sound comes from the fan.

it uses 20 mm (sleeve bearing) i try to oil it but fan is closed. it not allows the oiling.



Yate Loon D12SM-12

12 V DC. 0.30 A 120*120*25MM

if i get this similar specs fan. same volt amper's problem would be fixed ? fan makes sound after all. i dont want to get same fan. some better model.

i just stick with my psu i just change the fan. maybe later not now.
Last edited by bythelee; 5 hours ago
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Showing 1-15 of 24 comments
if you google for 3pin (?) with the other specs ,you ll find what you need .Yet , it could be lubricated . it looks like the stock fan is 2pin , so if you find a match with 3pin you could use 3pin to 2 pin fan adapter
Last edited by smallcat; 9 hours ago
its a standard 120mm pc case fan, all are 12v, current doesnt make a difference
all are 12v, just needs to be 2-3pin dc control
its header may have 2 pins, just means it does not detect the fans rpm, it will still plug in and work

worst case, plug it into a mobo fan header, or use a molex adapter

oil is a temp fix, it will need more in the future, and need to be replaced eventually
many Intel stock coolers have sealed fan too but could be lubricated . Youtube helps . In this case the risk is 0 because there s no RPM sensor (2pin fan)
Last edited by smallcat; 9 hours ago
over time, fans accumulate a lot of dust, which in return makes the fan noisy. what you can do it to take the entire fan out and clean it with cloth. just put it back in correctly or you get a rattling noise. i did that mistake myself when i cleaned my own fan.
Originally posted by smallcat:
the fan must support 0.3A at least at 12V . if you put 0.15A fan and the PSU sends 0.3A would surprise you
this is flat wrong
the psu only supplies regulated voltage, the fan will only draw the current it needs

a 10,000w psu will only put out the current it needs even if its only to a pi or an led that needs 0.02a
Originally posted by _I_:
Originally posted by smallcat:
the fan must support 0.3A at least at 12V . if you put 0.15A fan and the PSU sends 0.3A would surprise you
this is flat wrong
the psu only supplies regulated voltage, the fan will only draw the current it needs

a 10,000w psu will only put out the current it needs even if its only to a pi or an led that needs 0.02a
you re right , the things are made differently .so

As long as the replacement fan is also rated for 12V, using a lower current fan (0.15A) is perfectly fine.

The PSU will not force 0.3A into the fan — it just makes 12V available, and the fan takes what it needs.
Last edited by smallcat; 8 hours ago
molex would force a constant speed - the max at 12V . it d be noisy . There are molex to 7V adapters but the speed would be fixed too despite being lower than at 12V
x 7 hours ago 
Try to get a fan with similar max RPM. If the new fan is a lot faster (max RPM) than the previous one, it could rotate a bit faster than needed and be a tad too noisy. Or, if it's a lot slower, might not cool enough.
And also, get a PSU that is rated (A - Amps or mA - milliamps) equal or lower than the previous one. Since we don't know the electronics of it, better not go over.
PSU fans should be controlled by the 12V line while "reading" temperatures and/or power usage from the PSU.

WARNING!!
Now, the cautionary part. Opening a PSU will most likely void the warranty. Also, some of the capacitors inside can potentially hold enough juice to give you a good jolt (or much worse) even when unplugged. So, disconnect it from the wall, leave it a few hours and even then, try not to touch any exposed metal. And since I don't know your PSU, you might need to de-solder the old fan and resolder the new one.
Dead women and men can't play games.
Last edited by x; 7 hours ago
x , or just find a fan with high CFM but less noisy
if the psu has a fan header inside it, use that
if not use a mobo fan header

if the psu fan header is 2 pin, its fine to use a fan with 3-4pin cable (with rpm sense and pwm) only the power pins are needed and the fan will run at whatever voltage thepsu gives it

most atx psu fan connectors are 2pin like this
https://connector.pinoutguide.com/photos/2pin_fan.jpg

a 3-4pin pc case fan will plug into its header and still work as intended

the molex 7v adapters use the psus 5v and 12v rails, pulling up on the 5v.
bad design, and should not be used, if there is no load on the 5v, there is nothing stopping the fan from bringing the 5v rail up toward 12v
_I_ , you suggested molex .Even a Noctua fan at max speed may get quite noisy but they re mostly 4 pin . Once it runs above 1300RPM the noise is noticeable
Last edited by smallcat; 7 hours ago
x 7 hours ago 
Originally posted by smallcat:
x , or just find a fan with high CFM but less noisy

Yeah, many ways to skin a cat... no pun intended :D
Originally posted by x:
Originally posted by smallcat:
x , or just find a fan with high CFM but less noisy

Yeah, many ways to skin a cat... no pun intended :D
no one said 30 buck fan
there are many fans <30db on 12v
something with similar cfm/mmhg would be best (rpm is irrelevant)

but it doesnt really matter for the psu fan
if its plugged into the psus fan header, it will control its speed depending on its temp
molex would just be at full speed all of the time, but still work fine and keep it cool

this is the cheapest 120mm case fan on amazon with fan header and molex connectors
20db will be quiet even with 12v and on all of the time
https://www.amazon.com/Computer-Case-Cooling-Fan-Gamer/dp/B0BT5VVB3M

or just use whatever case fan you have available, ti will work
rpm is noise relevant ,that s why it matters .anyway
the fan in question is advertised as 1500RPM and 50CFM but in reality is 1310RPM and 38CFM
Last edited by smallcat; 5 hours ago
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