Electronics for you, will allways be the same issue.There was a lot of ESAB stuff in that era of machines that quickly moved on to the next generation as it were. They bought enough spares to support them for the 5 year phase out then when they were gone they were gone. The reason they did it wasn’t just to give things a new look it was because a number of components used on the boards and spares just like the ones you want became unobtainable. Manufacturers stopped making a lot of the spares so machines needed to be made obsolete. There still may be boards or parts for that in stock. Unlikely but possible.