Thanks for this suggestion. I by-passed the wiring to the torch by running a jumper from the rectifier output straight to the pin on the PCB and still no success. Im hoping the board that's now sold is compatible, waiting reply from weldequip.
For info. the current board is compatible with the older welder (150TE) with a minor modification (a link between JA and JB). Quick efficient service from weldequip so I'm operational again.
Thanks to all.
Bob