hitachi fine on reading fw but clicking

[positivebit]

Try to understand how to solve this, i have got Hitachi 5450, clicking fast.
put in safe mode i can read correctly all modules from SA-A,B,C and also nvram and rom.
put back in SA-A still clicking

heads are good, try to swap them to identical drive and works perfectly, so i put back to patient drive.

[pcimage]

Try changing the head map in NVRAM

[Nick_CT]

You tried patient heads in donor, but did you try donor heads in patient?

[positivebit]

You tried patient heads in donor, but did you try donor heads in patient?

yes, same result

[Nick_CT]

Strange. Try what pcimage suggested, disable some heads in NV-RAM and see what happens.

[positivebit]

Try changing the head map in NVRAM

i have just tryed changing head map by reversing couple in NvRAM , and hdd now stop clicking, go to ready but no ID's - no SA and no data area access.
i will give a try to upload fw modules on the reversing couple of head map..

[positivebit]

after changing head map and uploading fw to the head, the hdd at the next power on still cliccking even if the couple heads are different..
so i try to use another pcb, same model same family same sticker on white label of the pcb.
i uploaded on the pcb the Nvram of patient.
the hdd goes to ready but not ID (->error on the console when i press load from hdd) but i can read all fw modules from sa-a,b,c nvram rom.
i can't go to user data.
any i am of this behaviour