From: charlesandmilly@gmail.com   
      
   Hi, everyone (including the original poster).   
      
        When the power supply unit fails, there can be a basic myriad of possible   
   problems   
   and/or failed components.   
      
        Here are some things to look for:   
      
       Current limiting resistors, rectifier diodes, transformers, transistors,   
   caps., filters, coils, etc... Shorts and opens are common problems. Look   
   for bad connections, cold solders, etc... Lots to check for to "pin in down".   
   Especially with older devices. Since it is an analog device (as was said),   
   it is assumed the equipment is old, so we have to go to the old school   
   way of checking everything, looking for key things, in order to come up   
   with some accurate diagnosis.   
      
       Good luck and have a great day.   
      
   Charles Lucas   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)