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Rectifier Bridge Test

  1. Position ohmmeter with one lead touching grounded heat sink and other lead touching flat metal of diode on one of 3 terminals. Observe reading and reverse test lead connections.
  2. If both readings are the same, replace rectifier bridge. A good bridge will give a high and low reading. Test all terminals (6 tests with insulated heat sink).
  3. Connect ohmmeter leads to insulated heat sink and to one edge of the 3 terminals. Observe reading and reverse connections. Repeat test on all terminals (6 tests with insulated heat sink).
  4. When all 12 tests have been made, testing is complete. DO NOT  use high voltage test light to check bridge. Replace diode trio or rectifier bridge if one pair of readings is the same.
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