Thanks for the update...at least I know what I'm up for.... sending it back for some Samsung voodoo guesswork.
PBA is the "Printed Board Assembly" - calling it "bad" and replacing it in my opinion translates to one of two things. Either
A) Samsu...
If I had to detail out my issues...they are IDENTICAL to yours. Great hardware out of the gate, then pop gos the weasel, problematic. Have done SIMS card, network reset, factory reset etc, nothing more than big brother bend you over run around. 5.1.1...