PSU fan still works after shutdown.

incxbxs

Reputable
Oct 15, 2015
5
1
4,510
I have asrock z77 extreme4 mb and high-power 750W 80+ PSU.
Problem is, PSU fan still works after shutdown. I had believe it was normal behavior, but recently i learned it is not. (it was like that for 1.5 years no matter which os i used to)

It is a little bit too late for rma, but i still want to diagnose system to see whats wrong. Where should i start?

(ps: only PSU fan work nothing else is.)
 
Solution
I have never heard of this brand to be honest but after a quick search I found out that it is a decent manufacturer that makes mid-range and some high-end PSUs as well. I know that some power supplies have that feature of the fan spinning for a couple of minutes after the pc is turned off, simply to damp as much heat as they can before the power supply completely turns off. And surprise, surprise, your PSU has that feature as well!


This is directly from Highpower's website listed under your power supply's model:

Off- Delay Fan (Fan Stays On After System Off)
It allows PSU fan to continue running after system shut down for few seconds approximately, it helps to exhaust residual air at the end of the heating/cooling cycle for...

Gate9er

Distinguished
Feb 15, 2012
1,460
0
19,660
I have never heard of this brand to be honest but after a quick search I found out that it is a decent manufacturer that makes mid-range and some high-end PSUs as well. I know that some power supplies have that feature of the fan spinning for a couple of minutes after the pc is turned off, simply to damp as much heat as they can before the power supply completely turns off. And surprise, surprise, your PSU has that feature as well!


This is directly from Highpower's website listed under your power supply's model:

Off- Delay Fan (Fan Stays On After System Off)
It allows PSU fan to continue running after system shut down for few seconds approximately, it helps to exhaust residual air at the end of the heating/cooling cycle for extending component life


So nothing to worry about, it is just a feature!
 
Solution