1. First, we should judge the HDD’s problem was caused by PCB or not?
HDD can’t spin up. Either no sound or a short, quiet tickling sound can be heard.
A burning smell can be sensed coming from the HDD or PCB.
Burned components on the PCB.
The HDD be connected to wrong power supply.
PCB’s interface damaged.
If your HDD has the above symptoms, you can swap PCB to …
As we know: HDD can’t spin; board/chip be burnt; interface broken; etc. These problems are caused by PCB malfunction. Swap PCB of your hard drives can resolve the problems.
Which HDD’s problems are not caused by PCB:
HDD has a buzzing voice or a sound like it is trying to spin.
HDD can spin. However, it makes a lower clicking noise. It spins for a moment and then slow down.