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CPU Fan Jitter


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#16
iammykyl

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Any problems with cutting off and capping extra PSU leads?

Yes. If you interfere with the PSU at all you void the warranty. Any sort of mistake causing a short, who can tell what would happen.
Not something I would do.
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#17
MemphisEddie

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No good
Still have a cpu fan start problem:
CPU fan dose a slight jump or bump, then stops, then runs.

I even got a new modular psu.

Still no fix for the CPU fan start.
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#18
iammykyl

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Did you test the fan as in Post #7?
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#19
MemphisEddie

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Set or check BIOS Thermal monitoring, Yes it was set to Auto.
P41, PWM Phase Control,set to Auto.
But the Bellow:
Remove the rear fan plug from the Sys-1 fan header.
Remove the CPU fan plug and attach to the Sys-1 fan header on the Mobo.
Turn on the PSU.
Power on and watch the CPU fan, does it start OK, it should run pretty fast.

The above info is for a case with a fan
I talked about that my case has no fan it is a HTPC case well vented but no case fans. The only fans are in the psu and the CPU.
So the only check was to inspect the Bios to insure it was Auto.
As far as voltages I now have 3 PSU the new one is a modular PSU but is 0.5" to big when I install the Bd/dvd/cd drive.

in short Yes I check my biuld per post 7.
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#20
iammykyl

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The test is for the CPU fan, not a case fan.\
You said you have installed this Mobo, > http://www.newegg.co...N82E16813128542
It has 1 x CPU fan header 2 x system fan headers
You must do this for no longer than 5 seconds as the CPU will not have a working fan.
Remove the CPU fan plug from the CPU fan header on the Mobo.
Attach the CPU fan plug to the system fan 1 header on the Mobo. Power on briefly, does the fan still jitter?


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#21
MemphisEddie

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Tried to boot with the cpu fan connected to system fan 1 and then system fan 2.
No fan movement on both system fan 1 and 2.
But
I am having a lot of problem with windows 8. Had to pull my main HDD out and formate and remove all partitions. At first I thought it was a hardware problem. But every time the OS hibernates it locks up the OS. Doing a forced reboot by unplugging cause a blue screen of death.
After the blue screen of death I cant reload Windows 8 and have to pull the HDD out put it in a HDD case and formate and remove all partitions.
Well
You get what you pay for. I paid 0$ for windows 8 and I got a unstable OS.
Again
No fan speed on system fan 1 or 2
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#22
iammykyl

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No fan movement on both system fan 1 and 2.

That is strange, there should be some outpt from those headers. As window 8 is not yet officially released, it its impossible to say what (window 8) you are trying to use. I suppose it is possible it is effecting the hardware, more likely using wrong or incompatible drivers.

Suggestions, Format the HDD. clear the CMOS. reset the time and date in the BIOS.
Try the fan test again. if that does not work.
Leave the CPU fan connected to the CPU fan header and try a spare case fan on Sys 1/2 headers. If a spare case fan spins up, looks like the the CPU fan is dodgy.
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#23
MemphisEddie

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Correction to test
Sys fan 1 header spins up the cpu fan but it dose the same jump or bump fan star as the cpu fan head.
Why it works now?
Sys fan 2 will not spin up the cpu fan.
Again
Sys 1 header:
cpu fan runs but at the start jumps stops then runs
Sys 2 header:
cpu fan will not run.
Cpu fan header:
cpu fan runs but at the start jumps stops then runs

Edited by MemphisEddie, 18 October 2012 - 05:34 AM.

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#24
iammykyl

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It being a new motherboard and you are getting the same fan jitter as with the old board, it does look as though there is a fault on the CPU fan itself.
Have (we) tried this,
Connect a spare fan to the CPU header on the Mobo and do a brief start If the fan starts without a jitter I see there being no option left but to install a new CPU fan.
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#25
MemphisEddie

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I have an older cooler master it has 3 pins vrs the i5 ivy 4 pin.
But
The older cooler master cpu fan spins up right away (no jitter).
So
Is it somthing to do with the 4 pin vrs 3 pin cpu fan?
or
Do I have a flaky i5 cpu fan?

Edited by MemphisEddie, 18 October 2012 - 09:41 PM.

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#26
iammykyl

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I would say the i5 fan is fault, probable the fan control wire or socket.
> http://www.allpinout...(CPU)_4_Pin_Fan
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#27
MemphisEddie

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Cool
I learned a lot :thumbsup:
But
I dont think I will buy a new cpu fan. :angry:
and
I was going to over clock 2 around 4 or a little higher :ph34r:
With that said
I need a new cooling system. When I over clock I will need a H20 system :help:

What is a good QUITE H2O cpu cooling system or is there a forum on water cooling? :help:

Again

Thank You I leanred a lot about simple testing. :thumbsup:

Edited by MemphisEddie, 19 October 2012 - 09:37 AM.

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#28
iammykyl

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Hi.
If you over-clock in that case, with no cooling fans installed, You are quite likely to fry something. If you do use case fans, you defeat the object of having a near silent HTPC.

water cooling requires a radiator and pump, and somewhere to put it and you still have the noise from the fan + pump.
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#29
MemphisEddie

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Htpc is a tight fit.
but
I do have a CPU fan that is toast and over clocking to 4 or 4.1 on a i5 ivy is easy. The water cooling for the CPU is super low profile. The 120 fan and radiator should hit around 2" and mount everthing above the mobo on the top of the vented case. I will have to make a test card board box to insure a easy install.
I guess the point is my cpu fan heat sink is toast.
I need a good cooling system.
Water cooling today is very dependible and safe.
and
Cost is a little higher than a high end CPU fan/heatsink (70$ vrs 40$) but for quality of cooling water is the way to go.

Edited by MemphisEddie, 23 October 2012 - 08:13 AM.

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#30
iammykyl

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When you get it done I would be interested in the results.
Could you take some temp readings before and after?? Maybe use HW monitor or Speedfan.
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