the machine still runs yea yea it still runs what id do now is take some voltage and current readings ull knew where u are with current drive output, a replacement will be adoddle then use meter to measure U - V say, and a clamp to get currents take the readings on UVW at the motor go from say 100rpm, 500, 1000, 1500,go up in 500s then u want from say U accross V so get phase reading a bit better one http://imagebin.org/284914 account two phases in effect accross like ud check a 3phase power for balance id not worry about measure each phase voltage as be pritty even... just give us a idea of what the voltage to hz ratio is and current draws