Rectifier Diode / Bridge: Testing and Inspection

1. A positive rectifier test checks the continuity between the positive rectifier and the stator coil lead connection terminal with a tester. If there is continuity at both terminals, the diode is shorted, so replace the rectifier.




2. A negative rectifier test checks the continuity between the negative rectifier and the stator coil lead connection terminal with a tester. If there is continuity in both terminals, the diode is grounded, so replace the rectifier.




3. A diode trio test checks the continuity of the three diodes by connecting an ohmmeter to both ends of each diode. If there is continuity in both directions, or if there is no continuity, the diode is damaged, so replace the rectifier.