Usually a damaged head making a clicking sound is different to this sound. This is more of a 4-5 clicks then spin down. Does this sound like a head/pre-amp problem?
Are you sure? When i received the disk it would not power up at all and had a burnt motor controller chip. So i assumed it was a power surge or power spike that caused it.
I have done this a few times and the disk would start knocking a few times then power off, i.e spin down and the motor would turn off. So you don't think it's a PCB compatibility issue?
I have been researching the best way to swap a pcb on a Western digital hard drive. I have attempted this a few times in the past and about 50% of the time i spend money buying a spare part ...