Changing the HDD pcb

Hello, I want to ask that, my laptop hdd pcb is damaged, The part number is 7K750-750, HTS727575A9E364…
I found another pcb from another Hdd (same part number etc…), i plugged and the CD is turning(motor) .
I connected to my another pc with Sata-Usb converter. But it didnt work.
Can you help me about this problem…What must i do???

Hello, ak11474,

Well, we strongly recommend that not to do so, you may have contacted us if you were facing the problem or the PCB was damaged. Working on hardware level may lead to void the warranty of the drive.