If you have and have a multimeter! Could you please take a resistance reading between the pilot arc post on the front of the machine and the earth/work clamp contact.
Please only do this all switched off, unplugged etc, just looking to see what value you have resistance , if any between the two.
Thanks
Adrian
Please only do this all switched off, unplugged etc, just looking to see what value you have resistance , if any between the two.
Thanks
Adrian