antec 900 top fan issue

sybatron · 1 Nov 2006 at 10:06

Hi ppl, i know this case is new but hopefully the fix is old for this problem..

I'm using a DS3 mobo and an Antec TruePower Trio 430w PSU

the issue i have is that the top fan won't spin up fully. it is plugged into the "fan only" power cable from the PSU (and won't fit in any other). It's getting pulses of power, but insufficient to push it into action.

I believe that the PSU monitors temps and adjusts fan speed accordingly; is there a way to disable this?

Any fixes/comments/suggestions?

any advice appreciated; google's turning up a blank

cheers

33L · 1 Nov 2006 at 10:12

does the top fan have manual speed setting like the 120mm tricool fans? if so then it wont be aqble to power up on the fan only plugs as there is very little power in these molex plugs.

sybatron · 1 Nov 2006 at 11:11

yeah it does -- 3-way speed setting "h/m/l"

obviously it's set to high but still no go. i get the feeling that were it a 120mm it would be spinning away quite happily.

bit of an oversight on Antec's part eh? they implicitly recommend their TruePower series with the 900 case.

you think it's a lost cause then?

Yewen · 1 Nov 2006 at 11:37

Plug it into a normal molex connection.

I never use those stupid fan only connections, I do not need my case fans being controlled by the temperature of the PSU.

sybatron · 1 Nov 2006 at 13:13

Yewen said:
Plug it into a normal molex connection.

yep. thanks that's done it. I did try to do that at first but couldn't get the connector to fit. thought it was by design but actually it was just a dodgy molex i was trying to plug it into -- one of the female pins wiggled with the wire in the back.

s'all good now. nice (but unnecessary!) drop in temps too..

thanks again

33L · 1 Nov 2006 at 13:25

Yewen said:
Plug it into a normal molex connection.

I never use those stupid fan only connections, I do not need my case fans being controlled by the temperature of the PSU.

same here - useless - i rather that cable wasnt there to save me having to tidy it up!

Captain Fizz · 1 Nov 2006 at 14:04

They are usually around 5V.
This can be too low to get some fans spinning.

As you have done - Molex will solve the issue.
Or using a fan that will run at 5v if you like low noise.

(But as your fan has h/m/l then just use it)