Question about Miller Welding Tools
Posted by Anonymous on
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Posted on Jan 02, 2017
Most likely one or more rectifer diodes shorted and now need to be replaced. A $5 volt/ohm meter could do it if you take the welder somewhat apart enough to test each diode and find the bad one. Since the diodes are swaged into the aluminum heat sink plate and one can not normally re-swage the new diode into place, I would just replace the diode with a stud type case of the same voltage and current rating. The stud case will allow you to drill a hole into the aluminum heat sink and mount the diode to it with a nut. $25 or so should buy the diode. Digikey.com will have the diode if a voltage and current rating can be found for it.
I read on this website that Clarke has filed for bankruptcy and there is more than one query as to where their website is so getting genuine Clarke parts might not be even possible. Getting the required part information for a diode swap is also up in the air?
Posted on Jun 19, 2009
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
Former Miller Certified Tech.
Posted on Aug 20, 2009
also do you hear any clicking when you depress the trigger?
You should. If nottry to jump the trigger wires inside themachine right where it goes out to the "gun"wires? worksnow? problemis in the gun cord somewhere.
Still not working? CHeck the contactor. SOmetimes a boxelder bug will get inthem and prevent them from working, or the contacts fry themselves.
Posted on Oct 01, 2009
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