One of my frequent customers brought this machine to my shop and explained the problem. I powered up the machine and sure enough, white smoke came out. Right away, I unplugged it and got it ready for repair. It was very clear from this demonstration, that plastic is burning, not something serious. The serious thing that I noticed was, there was no fan running and the power switch was no clicking the way it should be.
A smoking welding machine repaired. Model ING-MMA2003
