Lincoln v405-t repair

[Eaglextz]

Hello i am looking for electrical scheme of this machine,i have when i adjust current everything is fine,but when start welding the current jump to max .Can anybody help?

 

[eddie49]

Block diagram here:

Lincoln Electric INVERTEC V205 Operator's Manual (Page 117 of 119) | ManualsLib

www.manualslib.com

I doubt if you will find any more detail than that publicly available.
I suggest you check the current-sensing shunt(s) and their control circuits.