Re: to swap or not?

["Stephen Adler" <user=65@nabble.blu.org>]

 Good question Don, 

I have two identical system, same mobo, same power supply, same case, 
etc. On one system, the fan is running, and on the other it is not... 
The power supply I have is a Enermax NoiseTaker II 485 Watt. 

http://www.enermax.com.tw/english/product_Display1.asp?PrID=41

It has a knob on the power supply to control the fan speed I believe. 
The know is turn up to high, and yet no fan... 

Don Levey wrote: 
> Stephen Adler wrote: 
>> Guys, 
>> 
>> I'm spending a bunch of time this weekend, fixing up my servers in my 
>> basement. In doing so, I realized that the fan on the power supply of 
>> one of my servers is not working. Everything else with the system is 
>> OK. The temperature of the CPU is low, the temp of the system is low 
>> etc. When I put my hand on the case around the power supply, it does 
>> not feel hot. So, should I just leave the system alone? or do I spend 
>> the time and money to replace the power supply? I'd rather just leave 
>> it alone, but then, this server runs my business web site and the 
>> last thing I need is for it to go down while I'm out of town, (which 
>> is about 50% of my time...) 
>> 
> Is this diagnosis based upon casual observation or long-term study?   
> Is it possible that the fan is temp-operated?  You mention that the 
> power supply is cool, so if it is temp-operated the fan may not need 
> to kick on. 
> 
> -Don 
>