I am going to guess that you have an inverter type MIG. These would be less than half the weight of a transformer MIG.
The inverter type MIGs are rather more complex than a transformer MIG. Unfortunately, my guess is that the electronic card that does the switching is the problem, or possibly the big power switching Mosfets, or whatever they are using to generate and control the voltage.
If this is an inverter unit, and you have not been able to figure it out, it will probably need to go to a professional.
As to whether it is worth fixing, it comes down to the estimated repair price, the price of a replacement unit, is the unit a quality unit, does the unit meet your needs, how old it is, etc.
Richard
http://www.fergusonsculpture.com
Sculptures in copper and other metals
Inverter vs. Transformer
I am going to guess that you have an inverter type MIG. These would be less than half the weight of a transformer MIG.
The inverter type MIGs are rather more complex than a transformer MIG. Unfortunately, my guess is that the electronic card that does the switching is the problem, or possibly the big power switching Mosfets, or whatever they are using to generate and control the voltage.
If this is an inverter unit, and you have not been able to figure it out, it will probably need to go to a professional.
As to whether it is worth fixing, it comes down to the estimated repair price, the price of a replacement unit, is the unit a quality unit, does the unit meet your needs, how old it is, etc.
Richard
http://www.fergusonsculpture.com
Sculptures in copper and other metals