Have you asked Samsung? They have a decent tech support.
I do know from other devices I use that two boards which function identically, and which connect differently, may indeed have different parts on them.... Sometimes I even tell the story (I'm specifically referring to the furnace control board in my RV, The Dinosaur boards replacement for my Atwood has a device the Attwood did not have (Among other differneces) and as a result a much longer design life). Don't have your years with IBM but I am a certified electronics technician, from back in the days when we still learned about those quaint things called Vavles over in England (Vacuum Tubes) and have dabbled in electronics for nearly 50 years (2 years shy).