New board for wire feeder on 200 sm welder :: Industrial Electronic Repair

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New board for wire feeder on 200 sm welder

  Posted by Dean Hill on Friday, March 23 2012

I have this welder for over 20 yrs and this the first problem. Just stopped mig welding and blew the 24 v fuse inside of welder. replaced but did the same thing. Traced the problem to the pcb in the wire feeder. When you press the hand piece switch the gas flows but when released the wire feed keeps going. The resistor in between the 2 TIP125 gets very hot [red]and the 2 transistors do also. Any help would be appreciated . Thanks Dean Hill



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