HITACHI HDT721050SLA360 is spinning but HSA doesn't move

[USER]

Hello to all,
Just like mentioned in the subject of the post my HITACHI HDT721050SLA360 is spinning but I can't hear the sound of HSA.
I am not sure but I suppose that maybe it's not full spin that's why HSA is not ready to move over the platters.
Is there a possibility to connect this drive to COM terminal or check the current RPM of drive in any possible way?
I checked PCB (measuring voltages) according to the post:

hitachi-hdt721010sla360-not-spinning-tvss-t21878.html

I am thinking about buying and replacing PCB.
Any more ideas?

Attachments

Voltage input: 5,07V; 11,90V
Q2 (from left) 3,26V; 5,04V; 3,90V
L1 -4,95V
L3 5,07V
L300 1,08V
L310 2,50V
DC Motor 5,91V for each

[jono-ats]

Sometimes this is a symptom of bad heads with media damage.

[pcimage]

Sometimes this is a symptom of bad heads with media damage.

Agreed. See this often.

[poehere]

Sometimes this is a symptom of bad heads with media damage.

3rd this one

[USER]

Problem solved,
PCB and ROM replaced.

[pcimage]

Well done, nice result.

[fzabkar]

That's a very curious fault.

Do you still have the original PCB?

[USER]

I don't have original PCB right now, but I could if it is important.
Some idea?

[fzabkar]

Could it have been as simple as a dry solder joint at the NVRAM?

If the drive wasn't able to get up to speed, wouldn't it eventually have spun down?