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#1
11-25-2016, 06:51 PM
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#2
11-25-2016, 10:14 PM
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With the DMM on the diode scale, you should place the negative lead (black lead) on the + lead of the bridge - that is where two cathodes are connected. Then place the red lead on one of the AC leads of the bridge (may be marked with a sinewave) - you should see the forward voltage drop of the diode, anywhere from 0.45V-0.7V. Then move the red lead from your DMM to the other AC lead on the bridge rectifier - and look for the same.
To test the other two diodes, place the red lead of your DMM on the negative lead (-) of the bridge - two Anodes are connected there. Then, alternate between the two AC leads of the bridge, again looking for the 0.45-0.7V voltage drop across the diodes. Any lower than 0.45V reading,and you've got a shorted diode in the bridge. Youtube? https://www.youtube.com/watch?v=50Cwo3Of288 Hope this helps...
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit!
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