Q: zień Dobry, potrzebuje elektroniki do dysku Samsung HD503HI.
Zdjęcia w załączniku.
A: You can order it on https://www.hddzone.com/samsung-pcb-bf4100263a-p-380.html
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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Useful Guide: Hard Drive PCB Replacement
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Note: Send clear photos of your PCB (both sides) by attachments will make everything easier!