XPost: alt.binaries.chatter   
   From: jamie_ka1lpa@charter.net   
      
   In article , no@spam.com says...   
   >   
   > I have a pile of power supplies which used to power CCTV cameras.  They're   
   rated at 12V 1A.  They're very light and give out precisely 12V with no load,   
   so they must be regulated switched mode.  So why is it when I try to power a   
   0.15A 12V fan (a 120mm    
   Corsair computer fan), they fail very quickly?  The first one started whining   
   and gave out only 0.5 volts after only half an hour, and the second one went   
   pop after half an hour.  I've had two of the others powering door   
   entry RFID coils and the door solenoids and they've been happy for a few years.   
      
   Most likely bad caps , that is most common failure mode for them.   
      
   Jamie   
      
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