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AB350 Pro4 - Can't turn off fans |
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Fefolino 
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Joined: 03 Jan 2019 Status: Offline Points: 13 |
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 Topic: AB350 Pro4 - Can't turn off fansPosted: 03 Jan 2019 at 1:26am |
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Hi all,
I have got a problem, I have a AB350 Pro4 and I can't turn off my fans I tried making custom curve setting them at 0% until 50 C but they still continue spinning. Some users told me to switch from PWM to DC mode but I can't find how to help me I have 4 pin fans with 4 pin splitters Can you help me please? Thanks! :) |
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garych
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Joined: 09 Dec 2017 Status: Offline Points: 62 |
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Posted: 03 Jan 2019 at 1:56am |
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You can't turn off the PWM fan with a curve.
The only chance you with this motherboard is to get an adapter to make it a 3 pin fan and connect it to CHA_FAN1 header, where it will get detected as DC mode fan, that way you should be able to turn it off with a curve. 
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garych
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Posted: 03 Jan 2019 at 2:03am |
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nvm, got wrong board highlighted, but still you can only use cha_fan2 and cha_fan3 with a 3-pin fan in order to turn it off by setting a curve.
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Fefolino
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Posted: 03 Jan 2019 at 2:08am |
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Ok, thanks! What if I detach - or cut - the 4th pin, the one of PWM?
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Fefolino
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Posted: 03 Jan 2019 at 2:08am |
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I mean on the cable of the splitter obv, not on the motherboard
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garych
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Posted: 03 Jan 2019 at 2:26am |
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If you can do that without permanent damage to the splitter, then go for it.
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garych
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Posted: 03 Jan 2019 at 2:31am |
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I hope those are not CPU cooler fans, as you don't want CPU to not have a spinning fan, and your motherboard will most likely throw an error if you won't have any fan connected to the CPU fan header.
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Fefolino
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Posted: 03 Jan 2019 at 6:26pm |
Those are case fans and MAYBE cpu fans My mobo doesn't throw an error if I haven't any fan connected to the CPU fan header lol, I can tell you this because the first time I assembled this pc I forgot the cpu fan and it started normally... I was installing drivers on Windows, I watched temps, 50 C... And realized that I forgot the cpu fan lol BTW I think I can detach the 4th pin without breaking the splitter, I'll try thanks! |
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garych wrote: