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

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.

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A backup a day keeps DR away.

+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

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.

_________________
A backup a day keeps DR away.

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

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Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com