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WD2500JS-00MHB0 - U12 is dead

February 15th, 2011, 17:25

Hi all,

Unfortunately, my WD doesn't work anymore: 3 clicks at power on and then spin off.
Thanks to this forum I saw it may be a PCB problem and I found a matching one (2060-701335-003 REV B from a WD2000JS-00MHB0 DSBACTJCA).

As seen here, I swapped the U12 chip and no chance:
My drive with other U12 and other PCB: drive spins normally but is not recognised by BIOS
My drive with my U12 and other PCB: 3 clicks and spins off...
Other drive with other U12 and my PCB: works perfectly.

Conclusion is that my U12 is dead :(
Is there any way to recover my WD by finding a matching U12 ? Or to get one programmed for my drive ?
If yes, which of following information should match exactly ? (seems that it's DCM but not sure)

model information:
S/N: WMANK1299207
LBA: 488397168
MDL: WD2500JS-00MHB0
Date: 30 AUG 2005
DCM: DSBHCTJCA
Malaysia

PCB : 2060-701335-003 REV B
White sticker : 2061-701335-800 AG XW 2T19 5B3L 1 0007100 6107

Any help is welcome :)
Thanks,
Christophe

Re: WD2500JS-00MHB0 - U12 is dead

February 15th, 2011, 17:28

griffe27 wrote:Conclusion is that my U12 is dead :(

Wrong, conclusion is that there is nothing wrong with your PCB

Re: WD2500JS-00MHB0 - U12 is dead

February 15th, 2011, 17:37

griffe27:

Your drive have one (or more) dead head.
You need professional help, if you need your data back.

Janos

Re: WD2500JS-00MHB0 - U12 is dead

February 15th, 2011, 17:45

Thanks for your quick answers!
With other PCB and other U12, the drive spins normally (no click and no spin off), could it however be an hardware problem?
Is there a way to "check" my U12? (I prefer to be sure it's a head problem before spending a lot of money, between 400$ and 1200$ as I saw).
Thanks again,
Christophe

Re: WD2500JS-00MHB0 - U12 is dead

February 15th, 2011, 19:31

If your U12 would be dead, the PCB would not spin up the HDA.

Re: WD2500JS-00MHB0 - U12 is dead

February 16th, 2011, 2:11

Thanks for explanation !
Christophe

Re: WD2500JS-00MHB0 - U12 is dead

February 16th, 2011, 22:49

i can help you rebuild it. please email or SKYPE if need.

Re: WD2500JS-00MHB0 - U12 is dead

February 19th, 2011, 22:54

Hi, I have this working PCB in stock, pls contact my hotmail.

Thanks, Eric.
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