Thank you bobbes, I already noticed, but plz check the attached pic for 1b section, I don't have voltage on output, this is the problem.Hi Hossein, If the machine is running you don't need a testboard. Herewith the user manual. It gives you information about the LED's.
They are Amazing machines, I will hope to help if I can.
Can you weld electrode?
In first line you mentioned Arc available in second line you mention no Arc, which one is correct, I think it has internal gas flow switch, I will check again today and let you know, but need to know the situation of Arc too.
First you can try to make a connection with a small wire between J anf K on the remote control connector. That must have the same results as the torch switch.