Checking the rectifiers
Test instrument digital or moving scale ohmmeter.
Under no circumstances must a magneto type ohmmeter (megger) be used
Example of a power transistor check
If the results are abnormal, disconnect the rectifier and test directly across the terminals
Some tests are carried out using the load resistor, check that this resistance is good
These tests enable a fault to be detected, but cannot give an assurance that the
component is correct