Offizieller Kommentar
I just looked at the service log and note that they did replace the mainboard (in 19 days, not 30) and tested it as fully functional. I'm sorry to hear this is happening again, but it seems the problem you're having is a difference in capacitance between your body and the jog. Our recommendation is to ensure that you and the XDJ are properly grounded and not isolated, possibly holding any static charge.