hello dear people
fried PCB because of PSU shortcircuit
first time with this model does swap the rom will be enough or i need to swap the ram and also the CPU ?

PCB number : 100833707 REV B

This PCB has two e-fuses near the SATA power connector? Can you provide a detailed view of that area? As explained in your other thread, these fuses can be bypassed, with due care. I'll help you test the PCB prior to installing it on your drive. I just need a better photo.

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A backup a day keeps DR away.

here we are Sir

These are the two e-fuses:

NIS5232, ON Semiconductor, electronic fuse, 12V, 4.2A, marking 232, DFN10:
https://www.onsemi.com/pdf/datasheet/nis5232-d.pdf

MP5018, Monolithic Power, 5V, 1A-5A Current Limit Switch, marking AMAy, QFN12:
https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP5018/

Measure the resistances between Ground (eg a screw hole) and each of Vcc/Vin and Vout. If there are no shorts, then power up the PCB and measure the voltages at those same points.

_________________
A backup a day keeps DR away.

I don't know if your PCB/model has any peculiarities, but the following case is now something to watch out for (different Seagate model):

https://groups.google.com/g/datarecoverycertification/c/S1nve_ikrTg/m/1kzz_7yTCAAJ

_________________
A backup a day keeps DR away.

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

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

Please don't make me watch any more 873MB videos. Just tell me/us the resistances and voltages in a few words of text. We don't need anything else.

In any case, you're doing it all wrong.

Start by selecting resistance mode. Place the black probe on a screw hole (ground) and the red probe on 5Vin. What is the resistance?

Next place the red probe on 5Vout. What is the resistance?

Do the same for 12Vin and 12Vout.

You don't need to test all the 5Vin pins. They are all connected together, so testing any one of them will do.

_________________
A backup a day keeps DR away.

im truly sorry to make you upset Sir i did placed on the screw hole. but im a beginner that is why i sent a video
again sorry to make you upset im still learning day by day by mistakes monday i will try again...
God bless you

Sir this is the result in sesistance mode
the AMAK 224 get super hot when i power on. i replaced it with with the same from donor but still get super hot
what do you think Sir? any answer will be very welcome

Data-Salvage,

I am working on dc550 18 To Western Digital PCB Helium damaged by water.
The disk come from a data center.
The pcb was not repairable so I have to use a part to make a swap.
Succes for this model.

Remember use a part to train : never use your damaged drive.

Good luck

thank you for your kind message

can you be more specific Sir? did you swapped the pcb?