blown capacitor on Hitachi hard drive

[nstyhbbt]

i attached the power cable to the wrong end on the PSU and blew out my HD. Is there a way to just buy and replace the burnt chip or should I be looking to get a new PCB board? I read that for a new PCB board, I would still have to move the NVRAM - does anyone have a how to for doing that?

Its this one in the picture.

Thanks,


btw its an hitachi HUA72202ALA330 2TB

Attachments

[fzabkar]

The ROM/NVRAM is the 25FU206 IC adjacent to the MCU. That said, if the 5V TVS diode is shorted, then I suspect that the preamp may be dead also.

[ROb]

That said, if the 5V TVS diode is shorted, then I suspect that the preamp may be dead also.

+1
My experience with this drive is that it blows preamp whenever 5V TVS diode is blown.
FZABKAR would be able to throw more light it why so

[fzabkar]

I think this model may be one of those stupid designs where there is a resistor at the grounded end of each diode. If the diode shorts, the resistor blows open, and the surge then goes on to kill the unprotected PCB.

[Amarbir[CDR-Labs]]

I think this model may be one of those stupid designs where there is a resistor at the grounded end of each diode. If the diode shorts, the resistor blows open, and the surge then goes on to kill the unprotected PCB.

Wow ,
Man Cannot Believe After WDC Others will Also Use The Same Sick Topology on their power protection circuits ,Its a Shame if they did frank