Q: I have a HDD samsung 320GB model HD321KJ (LBA 625,142,448). The PCB card doesn’t works. My PDC Circuit integrated is 88I6725S-TFJ1 and my circuit integrated Motor Combo is R2S30002.
Do you have a PCB "BF41-00133A TRIDENT 11-RE Rev06" with the the main Controller IC 88I6725S-TFJ1 and the HDD Motor Combo IC will be R2S30002. If it is exact, I needn’t change the main Controller IC (88I6725S-TFJ1) because it is the same.
If it is not the same controller, i can’t change it to let the HDD be recognized because is too hard, the BIOS have too many pins, not just 8 pins.
A: https://www.hddzone.com/samsung-pcb-bf4100133a-p-156.html is your donor PCB. his PCB’s BIOS is integrated on the Main Controller IC. You should exchange the Main Controller IC to let the HDD be recognized. Move the Main Controller IC(the biggest chip on the board) is a complex job which need you have certain technique. Some electronics repair shop can do it.
Every PCB’s BIOS includes the unique information. If you don’t change it, the HDD will not work.