- Problem resolved
- I received the replacement board MFS-WF318A-T0 and it worked flawlessly.
So, in case this can help someone else:
- Old motor with the rounded magnets motor DC31-00049A needs the MFS-WF318A-T0 electronics
Both Sears Parts and Samsung were wrong and referenced the wrong board for my washer WF328AAW/XAA-01
Wife is not getting the new washer (called to cancel the delivery), so no worries yet about giving money to the Chinese.
Thank you all for your help, forums like these are priceless for the DIY.