I've got the exactly same situation. USB drive spins but is not detected (led doesn't light). It seems there's something hot on the board, near the connector. Board number is 100760718 REV. C, drive is an Seagate ST1000LM025 PN: HN-M101ABB/ESA 1TB F/W: 2BA30003 from 05/2016. I'm in search for a SATA replacement board. I've got some Samsung ST1000LM024 drives, and tomorrow will try to find the so wanted 100720903 board.
Thanks for any help.
Patient HM502JX/VPK BF41 00282A 00 usb Korea
Donor Hm500JI BF41 00294B 02 Sata China
Patient had water damaged. Clicking nonstop. PCB light working. But It's usb PCB. I am not sure about is PCB still good .
I couldn't get ROM .There is no external Rom chip. Tried to line Sata connector (removed 4 capacitors ). tried to RX TX point to read. But couldn't.
So I have 2 question.
1)Is that PCB compatible . Is this drive has unique ROM ? Do I have to read ROM from patient.
2) Is it compatible for head swap. (I guess % 25 )