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I have a model m02195,when turned on it has a massive power draw and the main transformer gets hot instantly,i have replaced the main transformer ,but it still does the same thing.

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  • jeffroadfeld Nov 09, 2010

    this is a welder it is a marquette model m02195,the other model number is 117-034-400. the welder is about 5 yrs old.when you turn the unit on there is a massive power draw,in talking to a welding supplier they said it was the main transformer,i replaced it and the problem is the same. the transformer buzzes and gets instantly warm.

  • jeffroadfeld Nov 15, 2010

    i have tested the wiring and cant find a bad wire or burned spot on the circuit boards, the wire feed motor is ok any other ideas that i can look for . i had the fan housing out to replace the fan motor all the wiring is correct i double checked with the wiring diagram,is there somthing else that i am missing?

  • jeffroadfeld Nov 17, 2010

    tested all the wiring does not appear to be a dead short,there is relay inside that seems to be closed all, the time,i am not sure how it works,this is on my marquette welder model m02195 that seems to have a massive power draw when turned on.any help would be great

  • jeffroadfeld Nov 18, 2010

    i disconnected circuits one at a time, same problem, looked at crydom d2490-10 relay located on fan housing, it is a voltage control relay from 3vac to 240vac. this relay appears to be always allowing a full 230 volts input into the main transformer,i think it should be activated by the heat control swtich. is this my problem possibly?im stuck on what to do next.

  • jeffroadfeld Nov 22, 2010

    i replaced the voltage control relay,i do not have the massive draw when turned on now, butbvi do not have any power output when the trigger is pushed. the wire just sparks a little andthe transformer gets hot . what now?marquette welder m02195

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Hi,
The problem is not with the transformer but rather the draw on the transformer...it is too high....there is a short in the wiring or the motor for the wire feed....
To find the exact problem you will have to take an OHM meter and trace down to problem with no power present.....

The readings will probably not be zero because the short is probably not a dead short but rather a break down in the insulation somewhere or an internal short in the motor.

Finding the problem could be a needle in the haystack deal...but at least with the OHM meter you should be able to isolate the problem to an area...then change parts from there...

heatman101

Posted on Nov 10, 2010

  • D. Floyd Kolb
    D. Floyd Kolb Nov 17, 2010

    Is there anyway you can just disconnect part of the load at a time so that you can start to isolate the problem... it probably is not a dead short and is more likely bad insulation or something the just bleeds current...or just pulls more then it should...

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Hello Jeff. Thanks for choosing Fixya! The model number you listed does not match up with any chain saws. It appears to be a welder. Please reenter your problem being sure to state the brand name and the model number of your tool, and the category of tool that it is. We truly do want to assist you, so please do get back with the necessary information. Regards, Joe

Posted on Nov 09, 2010

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