Board Number:s002135mt The Hard Disk Drive is not include.
The drive will power up normally (no ticking noises, errors etc) but will not be recognized by the computer
The drive will power up normally and be recognized correctly but will report a size of 0 bytes
The drive will power up but report SMART errors on boot
Replacement the PCB may not solve the above problem. These problem is caused by the HDD firmware corrupted.
Symptoms of failure:
If your HDD firmware, date code and site code is different. You can swap the BIOS chip from original PCB to the replacement PCB, to make the replacement PCB compatible with your HDD.