From: noel shelley (noel@shelley1722.freeserve.co.uk)
Date: Thu Sep 18 2003 - 01:42:13 PDT
Firstly check ALL wiring , vibration can cause wires to break . Check
condition of brushes and slip rings . Check continuity and insulation of
rotor field coil .
Excitation may be derived from AC by 4 small diodes check condition .After
this it gets more complicated , field current may be transformer controlled
or electronic
Good Luck NOEL
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