Clicking HDT721010SLA360, solution?

[atmosphere]

Hello all

I have a HITACHI HDT721010SLA360 which makes clicking noise.

Situation is below.

1. Platters didn't rotate.(Heads is stuck on the platters, I saw in the clean bench.)
2. Remove the heads from the platter.
3. The drive spins up fine, but it makes clicking noise.
4. I thought that there was a cause to a heads mulfunction, and changed a MHA (same model, same MLC, right???)
5. Drive still clicking. (And I replaced MHA from the recipient to the donner again, it works.)

So, I guess the problem is a platter...??? any ideas or solution?

Thanks alot.
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atmosphere
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[networkpc3000]

everything is original? and patient drive haven't open before? will know more after check head.

[atmosphere]

Thank you for a reply.
Yes. Everything is original. It has not been opened so far.

And, how do I check heads? use the microscope?

Thanks.
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atmosphere
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[swersig]

Heads is stuck on the platters, I saw in the clean bench.
Remove the heads from the platter.
I thought that there was a cause to a heads mulfunction, and changed a MHA.

Everything is original. It has not been opened so far.

has it been opened or not ?

[atmosphere]

Heads is stuck on the platters, I saw in the clean bench.
Remove the heads from the platter.
I thought that there was a cause to a heads mulfunction, and changed a MHA.

Everything is original. It has not been opened so far.

has it been opened or not ?

sorry, i opened the patient disk. and it was not opened out till then.

[rameez]

did you try changing pcb ?