When there is no power in the Hard Disk, people usually change the PCB without searching for any other issues. Before changing the PCB, one should check the hard disk for any mechanical failures like a jammed motor or the stuck head inside the disk. Hard disk PCB replacement is a very simple process. For PCB replacement, we should have the knowledge of some basic things. In this session, we will discuss the hard disk’s PCB replacement process and learn how to find the donor PCB to replace the damaged PCB.