Lakoni 900 va welding machine. how to overcome the problems that often occur
Lakoni 900 va welding machine. Said the user does not want on.
After opening and viewing, r fuse to the 24v power supply block is forfeited.
Immediately open the power circuit, found r 2.2 ohm broken, broken mosfet and zener 20v in the area of the pcb pwm short.