Question Samsung with 100535704 REV C PCB - fix by replacing PCB

Jun 14, 2022
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I followed:
https://blog.harddriveparts.com/100535704-seagate-pcb-repair.html

I swapped PCB for exactly same model including revision. Furthermore, I soldered the original BIOS chip. I backed up both old chips through SPI flasher just to be sure.

Now, the drive spins, but it is not detected by USB dock station.,
When I put it in the Windows machine and start it, I get Unknown device with Generic Device Manufacturer (or something like that) and device is not initialized.

Any ideas? I assume I correctly moved the chip and replaced PCB and BIOS chip if it spins, didn't I?
 

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