XPost: sci.electronics.design, sci.electronics.equipment, sci.electronics.misc   
   XPost: sci.electronics.repair   
   From: tauno.voipio@notused.fi.invalid   
      
   On 16.2.15 16:01, Sparky wrote:   
   > Last year the alternator on my Toyota cooked the stator windings. I didn¹t   
   > look any further and replaced it with a rebuilt alternator & regulator from   
   > the local parts supplier.   
   >   
   > Now (7 or 8 months later) the replacement has failed in the same mode. I¹m   
   > suspicious. Also confused:   
   >   
   > If a diode opens there wouldn¹t be an increased load on the stator windings.   
   > If a diode shorts, there also wouldn¹t be any increase, just a decrease in DC   
   > output voltage.   
   >   
   > If the alternator output is shorted, since it¹s connected directly to the   
   > battery (+) terminal, this would result in smoke and fire, at least a burnt   
   > fusible link. None of this has occurred. (Well, the windings are discolored   
   > and the smell is what clued me in to these problems.) When I put in a   
   > replacement alternator I¹m quite confident everything will look just fine.   
   > Until next time.   
   >   
   > What could cause these symptoms? Twice?   
   >   
   > Thanks!   
      
      
   Bad battery which does not let the voltage to rise, or too much load,   
   but not enough to blow the fuse. A winding can be fried with a slight   
   overload and limited cooling.   
      
   Do you happen to have quadruple 300 W audio channels on board?   
      
   --   
      
   -TV   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)