the wiring loom on these passes down the side of the machine and onto the tub, here it often chaffs against the front weight causing broken wires. I take it since you've replaced the pcb and reconfigered its appliance code you know what your doing so remove the front panel and follow the pump wires , and the motor wires these tend to be the ones that short, down from the user board to the component repair as you find.Incidentally this is based on the assumption you meant wma 53 and no wm53 which would be a totally different machine!
jim
November 2007