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Thread: SN85G4 Intake Fan Not Working!

  1. #1
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    SN85G4 Intake Fan Not Working!

    [I have searched the forum! Sorry if its already covered.]

    I've had my Shuttle SN85G4 since September. I've had niggling problems in the past but nothing that could not be solved. This time seems different and I'm at a loss for what to do. Unfortunately to add insult to injury, this is the time where I am having to hand in alot of major uni projects and not having a system I can work on efficiently is driving me nuts.

    My problems began a while back, I noticed a fan in the Shuttle was unusually noisy. I don't know if this event is related. Out of the blue a few days ago my Shuttle just powered off. Straight to black screen, no shutdown message or anything. Since then it has been continually doing this. I sense the problem is over-heating due to the fact that if I turn on the system immediately after it has shutdown, it will last only a few seconds before it does it again. In my opinion the Shuttle is shutting itself down before it gets too hot. I may be wrong.

    Having cleaned the dust out of the system completely, rebuilt it in terms of removing the components and putting them back in again, nothing seemed out of place. I have just noticed however that the intake fan on the back of the unit is not spinning. A strange occurance obviously I have attempted to unplug and plug the fan back into its 3pin connector to no satisfying result. I have since removed the fan from the system and plugged it into another 3pin connector on a different machine. It worked.

    My intake fan has stopped working, yet works on other machines. How can I resolve this? Am I stuck with a dodgy motherboard connector and is there nothing else I can do but to RMA? It seems to drastic for such a small part...

    Please help! I'm going insane thinking about resolving this problem.

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    Crisis may have been avoided. After suggestion to testing the fan on different headers on the Shuttle I found that header to definately be faulty. The fan has now been put on header 2 and functioning appropriately for the time being. Only time will tell if it lasts out but SpeedFan etc are reporting decent RPM speeds and temperatures have dropped.

  3. #3
    I'm just looking Tifosi's Avatar
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    • Tifosi's system
      • Motherboard:
      • DFI LanParty UT nF4 SLI-DR
      • CPU:
      • AMD64 Venice 3200 s939
      • Memory:
      • 2x 1GB DDR400 Corsair XMS
      • Storage:
      • OCZ Vertex 2.5" 64GB SSD
      • Graphics card(s):
      • Geforce G210T / Geforce 7800GT
      • PSU:
      • ?
      • Case:
      • Lian Li PC-V1110
      • Operating System:
      • Ubuntu 12.04
      • Monitor(s):
      • Dell 2405FPW
      • Internet:
      • VM
    Sounds like the fan power header on the mobo, may have been overloaded and blewn.

    Are you using a fan control device at all soft or hard?
    Are you usig the stock fan or a different fan?

    You'll need a new mobo if its the fan header which sounds likely, or you could just take power from a molex if you can't be bothered to RMA.

  4. #4
    I'm just looking Tifosi's Avatar
    Join Date
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    • Tifosi's system
      • Motherboard:
      • DFI LanParty UT nF4 SLI-DR
      • CPU:
      • AMD64 Venice 3200 s939
      • Memory:
      • 2x 1GB DDR400 Corsair XMS
      • Storage:
      • OCZ Vertex 2.5" 64GB SSD
      • Graphics card(s):
      • Geforce G210T / Geforce 7800GT
      • PSU:
      • ?
      • Case:
      • Lian Li PC-V1110
      • Operating System:
      • Ubuntu 12.04
      • Monitor(s):
      • Dell 2405FPW
      • Internet:
      • VM
    Note don't stick a Vantec fan on the mobo header they often cause them to blow!

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