Check internal connections, Check to see if CR3- a heavy 24 volt contactor- closes. And check for continuity of secondary winding of transformer which connect to the rectifiers. The rectifiers are likely dead, or contactor has failed- either the coil winding or the contacts.
Bypassing therectifiers will allow machine to work as an AC weldert, but your results may be unpredictable.
Also check for continuity between pins 1 and 4 on heat selector switch (primary windings in series, you should see some resistance, but not a great deal).
SOURCE: hobart handler 140 will not feed wire
A schematic would certainly help, give Hobart a call and ask for a wiring diagram. or manual. Hobart are very helpful and may even give you guidance, you may have to pay the postage, they usually fax these documents so it will not cost you anything.
SOURCE: northern tool brand wire fed gasless welder feeds wire fan work no welding?
You need to have the ground attached to what you'll be welding on. Make sure there isn't anything on the end of your wire. Also, if your voltage is all the way down it won't do anything either. Oh, one more thing, make sure you have a contact tip on the end inside the cone. That will be the copper thing the wire goes through with a really small hole. I know some of this sounds pretty obvious but if I hadn't done these things at least once.....I wouldn't know what to look at either. I also don't know your experience level and want to cover all avenues. Hope you find it!
SOURCE: Wire won't feed into hose adapter.
You will have to adjust the tension at the feed wheels, also make sure the spool is not too tight, I had the same trouble with the 180 model, just a bit of fine adjustment
SOURCE: I have a Hobart 135 Handler wire feed welder that
Get a volt meter, go to ohms setting , check transformer to ground for low to zero ohms reading. also look closely at transformer windings for foreign objects in between them, never know what you my find. If transformer is shorted to ground probably time to say some nice words over it before burial. Also just for kicks try a new gun on it, (there is a reason i'm asking you to do(this) see if you can find someone that has spare. A good honest repair shop would probably be reasonable if all else fails. to a least let you know if the transformers a problem. good luck
Signed
Former Miller Certified Tech.
SOURCE: I have an hobart welder-handler 150, when the
why would you need to go to the lowest setting?. anyway look at the feed rollers, make sure they are the correct size for the wire, secondly check the clutch mechanism on the wire mounting centre post this might be too tight, thirdly check the linner this could be crimped.
If the set works ok on number 2 it should be ok on 1, perform the set up again, ensure the rollers are not tightend down on the wire.
lets now if the problem clears,
Ken
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