Seagate Momentus - No Power to Motor

[bpaiva]

Hi,

it's my first post

I have a drive 2.5 Seagate Momentus 500GB (details below), and when connected via Sata or external Case, nothing occurs, not even a sound (Click's) or plattes spin... so i check the PCB with a voltmeter and found that it not gave power to motor but gave power to Heads, i attach i image for better understand. (Sorry for bad English, it's not my first language ).

Drive Details :

Model: ST9500325AS

FW version: 0002BSM1

PCB version: 100536286 REV E

My Question:

If i swap only PCB with another exactly equal, i will have my data accessible again?

Thanks in advance to all community...

[jaclaz]

If i swap only PCB with another exactly equal, i will have my data accessible again?

NO.

To perform a PCB swap you neeed to also swap the ROM chip.

Additionally, there is the greatest risk that your current PCB has a burned chip BECAUSE the motor is suffering from a short or the spindle bearing is seized.

IF this is the case by connecting another PCB it is very likely that you will ALSO burn the same chip on it , and don't assume that is "easy-peasy" to find a suitable PCB for an exchange.

It COULD be a shot TVS diode, compare with:

http://forum.hddguru.com/seagate-500gb-st9500325as-5400rpm-pcb-problem-t18921.html

if this is the case, it has to be determined WHY the TVS short was triggered before removing it, but from what you post I doubt this is the case, as the behaviour would be different.

jaclaz