HITACHI HDS725050 KLA 360

[zebong]

Hi to all,

I Have a case that i have 2 disks that have burned the PCB because of the water.

I Have donor PCB, but the motor "stick" it have been degraded by the water.

MOTOR-01.jpg (48.71 KiB) Viewed 6559 times

What can i do here in this connectors, if someone happen this before can share with me please.

I think this model for platter swap they are not so good.


Thanks
ZeBong

[N.C.]

You can solder 4 wire to the spindle's solder points and to the pcb directly.
This will work, it that is all the problem.

Janos

[pepe]

are u sure the drive internals are free from the water?

pepe

[zebong]

I can not guaranty 100% that the water enter the drive, the one place that i see is the filter place.

When the water had contact with the PCB it should have a SC and the PCB have burned in some chips.

Is possible that when the PCB get burned or SC the pre-amp get damaged or the motor get damaged also ?

When i open one disk and i see 10 HEADS 5 plattes ....... wow ..... anyone haved change heads or plattes in this model with sucess ?

[N.C.]

1, check the water entered or not!
It is important, before start.

2, preamp is more than safe than not safe fortunately.

3, heads changing, it is not a problem.
But platters.... uhm...

Janos

[zebong]

Hi Janos,

I check the drive and the only way to enter some water it was by the filter in the cover.

But inside the disk and the filter is clean so i think the water as not there.

[N.C.]

Yes, i think too.
Now you can replace the pcb and move the NVRAM, solder the spindle, and get the data.

Janos

[zebong]

Janos check PM

[N.C.]

done, now you check.

[zebong]

Thanks Janos,


Open the disk and notice this plastic thing :

KLA.jpg (34.65 KiB) Viewed 6376 times

Is this really necessary for this disks working ?

[N.C.]

did you broke it?
This is a limiter and protector as well if i am right.
You have more disks, so i think the best if you replace it before start...

Janos