Seagate ST3500641AS 7200.9 clicking noise

[lemmy]

Hi, i need an advice about my hard drive:

Seagate 7200.9
S/N: 3PM1FZ6A
ST3500641AS
P/N: 9BD148-304
Firmware: 3.AAJ
Datacode: 07084
Sitecode: AMK

I tried to mount this drive one day, my pc didn't power on.
So i tried in another pc and, omg, smoke!



So I read around forums by removing the burned protection diode the drive would be just ok to backup some data.
So I removed it, cleaned contacts and pcb and finally plugged again.

Result: no more "fireworks", but cycling (2sec more or less) "clicking" noise.

Do I need to find a new pcb (maybe controller fried?) or just mechanical parts dead?
What's your diagnosis?

[BlackST]

There's something really wrong now. Maybe fried preamp INSIDE the drive HDA.
Need to diagnose it properly.
It was not a good idea to remove the TVS and leave the drive without any further protection.
If TVS have triggered, there should be a reason.

[lemmy]

How do I diagnose that?

PS: The drive has broken because of damaged SATA molex that didn't fit 100% inside my seagate.
I think it caused a wrong alimentation or any voltage spikes that have burnt up the tvs.

[BlackST]

Diagnose : by terminal then with PC3000.
THE PROBLEM IS NOT THE CAUSE BUT THE EFFECT.

[lemmy]

How can I diagnose with pc3000? This is only enterprise stuff i think.

Is it probably simply the pcb controller f***ed up? Maybe weird voltages and stuff damaged the controller, not the mechanical parts such as heads.

Anyone have suggestions?

[BlackST]

Yes it's enterprise stuff.

[pepe]

Probably preamp is dead.
which TVS was damaged? on the 5V or on the 12V line?

pepe