hello dear people
i got this HDD with friend PCB after PSU shortcircuit
this is my first time with this model swap the rom will be enough or i need to sawp the ram and also the controller ?
when i connect the pcb on pc-3000 the controller get warm....please tell me is because of the power circuit...

PCB number : G0085A

You've already damaged/corrupted two HGST HDDs, so I would think that the logical approach would be to repair this PCB.

There appear to be two e-fuses near the SATA power connector. If your client has swapped cables between dissimilar PSUs, then the 5V e-fuses have most likely been damaged. In most cases you can bypass the fuse. You may need to remove it if either Vin or Vout is shorted to ground.

Warning: do not interchange modular PSU cables:
http://www.hddoracle.com/viewtopic.php?f=56&t=2545

PCB protection devices - Electronic Fuse:
https://www.hddoracle.com/viewtopic.php?p=8872#p8872

Can you provide a more detailed view of IC32 and the other small IC nearest the SATA connector?

If you are patient, I'll try to help you with your other PCBs. Please don't mess with the ROMs and donor PCBs. I saw someone else destroy two HGST drives (patient and donor) by doing this.

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A backup a day keeps DR away.

here we are Sir

Measure the resistances between ground and each of Vin and Vout. If there are no shorts, then power up the PCB and measure the voltages at those same points.

MP5014A, Monolithic Power, 12V, 5A, Programmable Current Limit Switch with Over-Voltage Clamp and Slew Rate Control, marking ARPy (MP5014A = AMJy), TSOT23-8:
https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP5014A/document_id/1694/

I can't read the markings on the 5V e-fuse. Can you clarify what they are?

_________________
A backup a day keeps DR away.

wow this is amazing ^^
should i test it in continuity mode SIR?
the 5V e-fuse is BETM 525 "sorry for the bad quality"

I would use the 200 ohms range of your meter.

"BETM" or "BETy" is definitely a Monolithic Power 5V e-fuse or current limit switch, but I haven't managed to identify it.

_________________
A backup a day keeps DR away.

i took a video Sir. can you take a look?

https://drive.google.com/file/d/1FcJUr3 ... sp=sharing

See https://forum.hddguru.com/viewtopic.php?p=314284#p314284

_________________
A backup a day keeps DR away.