Q1: I’m looking for this hard drive PCB:
Samsung 500GB/R54/16MB
Model: HD502HI
Rev A
SEC-HD502HI (B)
2010.07
PCB Number BF41-00283A 01
TRINITRY_1D_REV_09 R00
Q2: Im looking for the PCB of a Samsung drive:
MODEL: HD502HI
P/N: HD502HI/Y
PCB: TRINITY_1D_REV .09
White lebel: PMZXD981A90716
in the back of PCB: BF41-00283A 01 
This Samsung BF41-00283A PCB is listed in Samsung PCB on HDDZone.com
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