XPost: sci.electronics.repair   
   From: curd@notformail.com   
      
   On Sun, 02 Dec 2018 10:12:01 -0500, Ralph Mowery wrote:   
      
   > Get a voltage source of around 10 volts or more (maybe even a 9 volt   
   > battery will be enough) use your meter on the voltage scale and put hte   
   > battery , diode , voltmeter in series.  Then turn the voltage or diode   
   > around and measure again.  There should be a couple of volts dropped one   
   > way and many more (almost all) the other.   
      
   +1   
      
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