need potentiometer tech to fix welder

[JamisonWorkshop]

I have a hobart handler 135. The wire speed is broke so that it is full bore all the time. I replaced the potentiometer switch and that had no affect.

It goes from the switch to the circuit board, then out of the board to a small 550 size motor that drives the roller that feed the wire.

Without having to replace the circuit board. I would like to find a pot that is rated to 12v that the motor sees. and run it right inline to the motor, and bypass the circuit board. I do not weld with gas, so I do not see it needing to be integrated into the board. I just need to slow the wire down.

Any info would be great on what I need to do this.

Thanks, Mike

 

[Reflection]

My Hobart 135 got struck by lightning a few years back. It blew a couple of the relay's on the main board. In my searches,they were Miller parts only(for those that don't know,Miller makes the Hobart stuff). I was about to give up and buy another main board,$$$$$$$$,my X father in law searched for a day or so and found the part searching through the part number. It was the actual company that makes the stuff for Miller.:lol: They didn't really want to but he talked the guy into selling a few to him. It only cost me a grand total of $6.50 after shipping. I'll try to contact him about it,but I'm not a real favorite over there anymore so I can't make any promises.



To slow the wire down....you could just throw some sand down in the liner:lol:

 

[JamisonWorkshop]

Right now I have the spool tightened up alot. Then loosened up the tension knob so it slips. I get a happy medium, but it eventually gets out of range again from friction. Not the best way to do it but it worked last night.

Just need a pot rated to 12v that would slow an rc motor down and I think i am set.