case fans spinning even when pc is off

[young eagle]

3pin fans daisy chained to a sata connector which goes to the psu

[old jasper]

psu fan spinining?

[young eagle]

kolink observatory hf mesh case if it matters

[young eagle]

Yeah pretty sure

Can check again

[old jasper]

something wrong with psu or mobo

[young eagle]

Like faulty or wrongly plugged in

Idk if i did the front panel connectors right can that be it

[old jasper]

motherboard off right

[young eagle]

How can i know

[old jasper]

idk try ripping 24 pin out

[young eagle]

Then what

[old jasper]

one of 2 thing psu bad or mobo shorting pin 16 to ground

[young eagle]

Damn

[old jasper]

or something on when its not ment to be

[young eagle]

Cant be anything else?

[robust holly]

That's awesome. They make 24-pin plugs for testing that make PSUs think they're hooked up to a mobo for testing fans and other peripherals.

I would guess that your cable is incorrectly pinned and acting as one of those plugs.

[young eagle]

Ill try in a bit

[old jasper]

if that is case fans will spin with it out

[robust holly]

yeah. basically there is an electrical connection somewhere that is bridging the appropriate pins.

i would troubleshoot by swapping the cable as its cheap. and then go from there.

[young eagle]

Non modular psu…

[old jasper]

only thing thats allways getting power is 5VSB and then all other ones only on if pin 16 (power on pin) connected to ground

[young eagle]

I do have another psu but its in my personal pc

[robust holly]

oh, wow. that's interesting. yeah.. it would be work but you could swap out the PSU to see if it make sa difference.

you wouldn't have to actually install it, obviously. you could just plug it in next to the case.

[young eagle]

Yeah thats what i was thinking

Its only 3 connectors right

24 pin cpu and pcie

(And sata for the fans)

[young eagle]

@old jasper the psu fan is not on from what i can tell

I have my ear right up to it

How many front panel connectors should there be

I only have hard drive led power led and powerbutton

No clue if they havw anything to do with it but i saw someone recommending to check them

[robust holly]

all you need is the power button for testing

[young eagle]

This guy had a faulty psu🫠

Guess ill have to find out tomorrow

Its 3am i gotta sleep

[young eagle]

@robust holly @old jasper

The fans dont spin when 24 pin is unplugged

So no bridge there right? Psu is fine?

[old jasper]

some thing to do with mobo then'

[young eagle]

a setting maybe?

[old jasper]

maybe?

[young eagle]

What would that be then

[old jasper]

this is new thing i have not seen

[young eagle]

I fixed it by enabling ErP

So stupid setting

[old jasper]

?

[robust holly]

if the 24 pin is unplugged nothing will work. having the 24 pin plugged in is what engages the PSU. that's why they make 24 pin shorting plugs for testing.
https://www.amazon.com/SDTC-Tech-Starter-Without-Motherboard/dp/B07X9SVB5K

[old jasper]

i just do that with paper clip

[robust holly]

or that.. lol

true story.. we had a component fail in reator controls onboard the USS Alabama once and we limped back to port on a paper clip because we didn't have the part onboard.

[young eagle]

Yes exactly thats what I was testing

Because you said those two pins are bridged

And by unplugging the 24 pin I can know because the psu would be on