I have Samsung HD321KJ (T166s), drive has been played around by computer shop and has been opened.
The drive initially has no power, swapped pcb no power to the motor, i thought the motor is dead, checked resistance to windings and it turned out to be motor ok.

Head replaced with a working donor and motor is working but continuosly clicking and shutdown

Could this be mismatched in headmap or incompatible preamp or thew worst case PCB is not native?

thank you all.


Got this errors:

SPW 1.5G LinkOk! ADC: 0001
SpnOk
spd: 0000 0000 0000
H: +00000
ADC: 0001
DAC: 8E8F
UF 3 1stGrayErr
H: +00001
UF 3 1stGrayErr
H: +00002
UF 3 1stGrayErr
H: +00003
UF 3 1stGrayErr
H: +00000
UF 3 1stGrayErr
H: +00001
UF 3 1stGrayErr
H: +00002
UF 3 1stGrayErr
H: +00003
UF 3 1stGrayErr
H: +00000
UF 3 1stGrayErr
H: +00001
UF 3 1stGrayErr
H: +00002
UF 3 1stGrayErr
H: +00003
UF 3 1stGrayErr
H: +00000
UF 3 1stGrayErr
H: +00001
UF 3 1stGrayErr
H: +00002
UF 3 1stGrayErr
H: +00003
UF 3 1stGrayErr
WriteSctLog -- buffer not valid
LED 13 0000

Solved! PM me for solution.