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Other All case fans have suddenly stopped working

Discussion in 'Hardware' started by chewbaccas_nan, 30 May 2016.

  1. chewbaccas_nan

    chewbaccas_nan Member

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    I noticed my computer was a lot quieter than usual when I powered it on last night and turns out that none of my fans (apart from the CPU fan) are working.

    I'm not sure if this is related to the problem, but over the past few weeks when I've put my computer on sleep, it's been waking up minutes later - even though it's never happened before, the sleep mode settings are all normal and have never been changed. None of my peripherals seem to be the culprits. Could it be related?

    I've been reading it could be a faulty PSU? My PSU is a Be quiet! Pure Power 630W - around 2 years old.

    :( perfect timing when the new Witcher DLC is out tomorrow
     
  2. play_boy_2000

    play_boy_2000 It was funny when I was 12

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    I assume your using the 3/4 pin connectors on your motherboard? If so check in your BIOS and try modifying the case fan settings.

    Also try completely powering off the system for a few minutes (unplug), but be warned that if it is a PSU issue, that could completely kill it.
     
  3. chewbaccas_nan

    chewbaccas_nan Member

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    I can change the settings in the BIOS. Does that rule out the motherboard?
     
  4. play_boy_2000

    play_boy_2000 It was funny when I was 12

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    No, unfortunately not.

    The next step is to see if you have a 3-pin to molex fan adapter and test each fan and see if they work. You can do it while the system is on, just disconnect all the fans and power them one at a time via a molex connector. If they all work, then it's probably the motherboard.
     
  5. TheMadDutchDude

    TheMadDutchDude The Flying Dutchman

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    If all fans have stopped at the exact same time, it isn't the fans to blame. It'll be whatever is powering them.
     
  6. chewbaccas_nan

    chewbaccas_nan Member

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    The psu is :/
     
  7. TheMadDutchDude

    TheMadDutchDude The Flying Dutchman

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    Oh, really??
     
  8. Vault-Tec

    Vault-Tec Green Plastic Watering Can

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    There are two 12v rails on the PSU. How many fans are you using and are you using a splitter?
     
  9. chewbaccas_nan

    chewbaccas_nan Member

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    3 x 120mm fans.

    There's a fan controller at the front and that just feeds straight into the PSU via a molex, with 3 x 3 pin outputs for the fans, my case is a Fractal R3. Sorry I hope that answers your question :eek:
     
  10. Yadda

    Yadda Well-Known Member

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    Have you delved in and checked the connections, especially where your PSU connects to the fan controller?

    If you have and all sees fine then try a different connector (molex I assume) from the PSU.
     
  11. chewbaccas_nan

    chewbaccas_nan Member

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    Yeah, but I'll have another look :baby:
     
  12. Yadda

    Yadda Well-Known Member

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    While you're there, you can test the connector you're using if you have a fan somewhere with a molex connector.

    If the single fan works OK on that connector then either the fan controller wasn't connected properly or the fan controller's dead.
     
  13. chewbaccas_nan

    chewbaccas_nan Member

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    Turns out it was a loose wire! My missus moved my computer the other day and the front panel came off and obviously pulled the fan controller wire out! :p

    Thanks for the help guys ;)
     
  14. Yadda

    Yadda Well-Known Member

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    Oh mate... :blush:

    Glad you got it sorted though. :)
     

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