Question about Hobart Welding Tools
Wire doesn't feed when trigger operated. I can hear a clicking noise in the unit, but the wire doesn,t feed and the feed motor isn't running.
Note: My brother in law is here and since he is a retired Electronics Engineer from Motorola. If we could get a repair manual with electrical diagram he could fix it.
First, UNPLUG the Welder! There is a small control board (2"x2") that the feed motor plugs into, it has a fuse on it. Here is what you do: Follow the circuit board trace that goes from one side of the fuse though a resistor then to the connector full of wires on the edge of the board, check that resistor for continuity it should read some value besides open. If it is open, this is your problem (as the drive motor ages it draws slightly more current than new, which should blow fuse, but instead blows the resistor). The resistor should be replaced with same resistance value, if problem persists replace again but instead of 1/4amp bump up to a 3/4amp for $1 or replace that drive motor for $150, you choose. Good Luck!
NOTE: As with any circuit board, take precautions to prevent ESD damage to board.
Posted on Apr 22, 2009
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Posted on Jan 02, 2017
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