Unfortunately, the welder was not working - whether it was a production fault or was it damaged in transit is unknown, but seller agreed for a return, and it was for free.
does not power up. faulty power switch. trying to troubleshoot how to fix. note: the model i have has a circular dial/momentary power switch. current photo shows a different membrane switch. maybe they realized their folly? it appears pretty fragile, the switch wobbles on the pcb it's mounted to, and has no support from the chassis.