Welder help,Please!!!

[brans72]

OK guys I know some might think this belongs in body shop but I know it will get more traffic here! I got a free Fire power fp120 2002 model from Thermodyne with cart,tank and gauge from this guy I work for on my days off. The welder was in a fire but did not get burnt up,instead got soaked by water from sprinklers. I am trying to figure out what part inside might be the cause that I get no spark from it when it is running. Unit powers up,The Voltage knob seems to work,and wire speed works. So anyone wanna try to help me out? Thanks Brandon

[Rick D]

http://www.thermadyne.com/IM_Uploads...44_56-1842.pdf

Here's a link to the owners manuel. Not much in the trouble shooting section but I would say from working at a welding supply company for a few years it's the main spark controller or what ever thermadyne calls it in their welder. Now the bad part it will most likely cost more for the part than it cost for a new machine. The problem is most of the lesser brands (Not saying it's bad just not the blue or red machine) they don't have alot of after the sale support. I would try your local welding supply store that sells welder and see if they can take a look at it. you have to remeber you don't want to mess something else up in there and have it start to weld and it shorts out and you or somebody close by gets hurt.

[brans72]

Got a spark going!!!! Welder is working now just trying to figure out a few flaws in it. First gotta get the right tips,ones from hobart are a little different (problem solved now). I wanna thank every one for tips!!!
The fix was clean everything I could which was good start but I started looking and someone did not have the neg and postive hooked up correctly and guess trying to rip my friend off. I feel lucky I got a deal and few bugs sure I am going to have to figure out. Should I feel bad for getting such a good deal?? The welder set over least a year and the old guy is good guy and slowly dying needs kidney along few other thing which I hate to see in his face when I work for him on the side and has always treated me fair 150%. Brandon

[David Pozzi]

If I recall right, a different polarity is used for gas shielded wire over the flux core stuff. Get that right and it should work out.