Advice testing diode module in circuit. TO-220 package, FMX22S, FMXG12S.

fastline

Member
Looking at a power supply in a Toshiba TV. In testing power components for obvious shorts, Pretty much all of these conduct at 0 ohms between pins 1 and 3. Looking at the diagram, it looks like they should not.
 
well they may measure 0 ohm depending of other parts connected to it, the only real way to test it is to unsolder at least one pin of it
 
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