Playing With an Ancient Miller Piggyback High Frequency Start TIG Unit

Looks like the unit might have bounced around a bit to much. When I power it up it seems to do nothing. By cranking up the current on the cracker box I was finally able to get an arc by touch starting, but no sign of anything that looked like a high frequency start. I certainly won't be able to weld the thin stuff I was hoping to at twice the current it should be. I guess its time to put the leads back on the cracker box and put it back behind the air compressor.
 
The one I used had a vibrator that Im guessing generated the high frequency. You could hear it hum and see a slight arc off the points. Maybe struck or the points need cleaned.

Greg
 
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