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xps8700help
2 Bronze
‎03-02-2015 08:47 PM

XPS 8700 SYS_FAN1 Buzzing Noise

Hello,

There is a persistent, loud buzzing sound coming from my XPS 8700 (within the case) when a fan is connected to SYS_FAN1 on the motherboard. The buzzing sound completely disappears as soon as the cable is disconnected.

  • This is the 2nd XPS 8700 that makes the same noise. (First unit was returned for a different reason).
  • The noise occurs independent of what fan is connected to SYS_FAN1 on the motherboard. (Tried 3 different fans, including 1 identical replacement provided by Dell and 2 aftermarket fans)
  • The noise occurs independent of all other powered components. (Disconnected every other component and powered the unit on)
  • The noise occurs independent of input power. (Powered the unit on at different locations)

What could be causing the buzzing noise? Could it be fan speed? If so, is there a way to regulate it? Could it be coming from the motherboard?


Thanks in advance for your help.

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3 Replies
xps8700help
2 Bronze
‎03-03-2015 05:12 PM

RE: XPS 8700 SYS_FAN1 Buzzing Noise

Could this be a motherboard issue? Anyone have an idea?

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karl34__
Not applicable
‎08-04-2015 10:40 PM

RE: XPS 8700 SYS_FAN1 Buzzing Noise

I have the exact same issue. I have seen it on three separate xps 8700's. Dell has yet to offer up a solution to the problem. I am also experiencing buzzing from the headphones on conjunction with a discrete graphics card. 

One of the only solutions I've been able to think of for the fan is to power a fan from the power supply directly and obtain one that has attachments to reduce the rpms. This is terrible behavior for a desktop computer. 

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Anonymous
7 Gold
‎10-08-2015 11:18 AM

RE: XPS 8700 SYS_FAN1 Buzzing Noise

Does anyone know if there is a way to monitor or control the fan speed?

I can see the temperatures on Linux, and probably Windows.  I think most motherboards let you see the fan speed too, but the Dell doesn't?  I searched for this all over and can't find it.

$ sensors

acpitz-virtual-0
Adapter: Virtual device
temp1: +27.8°C (crit = +105.0°C)
temp2: +29.8°C (crit = +105.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +38.0°C (high = +80.0°C, crit = +100.0°C)
Core 0: +38.0°C (high = +80.0°C, crit = +100.0°C)
Core 1: +36.0°C (high = +80.0°C, crit = +100.0°C)
Core 2: +37.0°C (high = +80.0°C, crit = +100.0°C)
Core 3: +36.0°C (high = +80.0°C, crit = +100.0°C)

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