I have a samsung drive with the attached pcb:
Board Number: BF41-00358A
Main Controller IC: 88i9025-TFJ2
HDD Motor Combo IC: PFF3190.3 (different than yours SH6125B)
Is your PCB compatible with mine?
SAMSUNG PCB BF41-00358A – $42.00 – HDDzone.com is your donor PCB.
When you get this PCB, you need to move your original PCB’s BIOS to the replacement PCB. The 8pins (4 pins on each sides) with 25P05VP、25P10VP、25F512、25F1024、25F1024AN、SST25VF512、SST25VF010, etc. are the BIOS.
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Note: Send clear photos of your PCB (both sides) by attachments will make everything easier!