a STAC 500W servo-type voltage regulator rescued from the junkyard...
only cost was for me to try and repair it, if it works - it's mine. If not, I should return it to the junkyard for recycling...
dismantled from it's case reveals a lot...
you're busted! the vr that set's the voltage reference for the servo motor controller was the culprit...
carbon brush still looks good...
good thing there is a screw that holds the carbon brush in place so I can replace it with a fresh one...
some metal work and paint is in order here...
to be continued...