Sound like rectifier has blown take apart disconnect it (take pictures so you know how to re connect) if its quiet the rectifier has gone
SOURCE: MIG wire is always hot without pulling trigger
Check your manual, there are a lot of mig units on the market that are alway "Live" alternatively, the relay has either shorted or you have wirering problem on the switch.
SOURCE: solar welder 2175 wire keeps feeding wont stop
Look on the front pannel. thier should be a "latching Switch" indicated by "4 X 2" little arrowes. The 4 is " pull the triger -- the release the arc continues, the "2" is pull the trigger and the arc startes release the trigger the arc stops simplesssssssss
Ken
SOURCE: I have a Lincoln pro core 100 when I pull the
content.lincolnelectric.com/pdfs/products/navigator/im/IM781.pdf
manual above.
Often this is caused by the Motor Driver, Electronics failing, you need to troubleshoot the PCB, Motor Drive circuit.
This is generally where you find the problem. Of course check ALL connections etc First too. Also Check out your switch too, sometimes they fail.
Wire feed stoppages and wire feed system malfunctions can adversely affect the welding arc and create irregularities that may weaken the weld bead. Birdnesting, a tangle of wire that halts the wire from being fed, is a common problem. You can resolve birdnesting by flipping up the drive roll and pulling the wire back out of the gun. Next, trim the affected wire and re-thread it through the feeder and back to the gun. If the welding specifications allow, decrease the drive roll tension, use a larger diameter wire and/or reduce the distance the wire feeds (use shorter cables) to minimize the chance of birdnesting.
Burnback is also very common. It results when a weld forms in the contact tip, and usually occurs because of too slow of wire feed speeds and/or from holding the MIG gun too close to the base metal during welding. To correct burnback, increase the wire feed speed and lengthen the distance of the MIG gun from the workpiece (the nozzle should be no further than one-half inch from the metal). Replace burnback-damaged contact tips by removing the nozzle and the contact tip (which may be melted to the wire), snipping the wire, installing the new contact tip and replacing the nozzle with one that has the appropriate tip recess for the application.
Other causes of wire feeding problems include liner blockages, improperly trimmed liners (too short/burred/pinched) or the wrong size liner. To remedy these problems, replace any liner if you find a blockage, always trim the liner according to the manufacturer’s direction and be certain you are using the correct size liner for the welding wire diameter.
troubleshooting how to, fix the PCB if you need to.
http://weldingweb.com/showthread.php?s=a8f5deacd13615dae178740c72f32f93&t=4385
Lincoln Support website below, please go here and obtain your Service and repair manual, one simply cannot troubleshoot without one, it just makes it a lot easier with one too.
http://www.lincolnelectric.com/
Online help below.
http://www.lincolnelectric.com/knowledge/askus/default.asp
56 views
Usually answered in minutes!
×