Hi, I have a Western Digital WD7500AACS that I was an idiot and plugged the wrong power cable in from my tower and managed to make it not work (I learned my lesson the hard way of checking the cable next time). I had read online that I can possibly remove one of the tvs diodes if it is blown to fix it. I was looking for some help to determine what exactly is a tvs diode on this pcb os i can test it with my multimeter.

Let me know if I need to provide anything else, and thank you for helping.

The location of D1 and D2 are empty. There was suppose to be the TVS diodes but WD decided that they are no needed....Also this pcb has no external ROM so you must found someone who can replace your pcb with another good one but he must copy ROM contents to the new pcb.

If data is valuable I suggest looking for a pro in your area.

RGds

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www.datasave.ro

A case like that we'd charge a flat $450 to recover from, just to give you a baseline. And I know we're not the cheapest company around either. Unless by some crazy series of events the power actually affected the internal components, but that's extremely rare in this type of incident.

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Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company

Measure the voltages at inductors L2, L3, L5, (mid RHS of PCB) and transistor Q8 (near jumpers). This should give us some idea of the damage. Do this with the PCB off the drive.

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A backup a day keeps DR away.