Both diodes read some significant ohms, and the 000 one is nearly equal to zero (around 2 ohms)
When putting the power cable, the 12V diode read 12V and the 5V one, -5V
When trying to put the black terminal of my multimeter to the ground part of the SATA input and try to check the voltage on the Vcores and Vneg, all read to 0V. I checked the resistance part at the same point and read a few hundreds ohms.
Any idea how to find the reason?
One potential cause was this HDD was within an external storage unit linked to the PC by USB 2.0
I canged my motherboard to a new Gigabyte Z77 and the external drive was not properly recognized anymore (it takes a lot of time to see the first folders level, and then after, nothing possible). On another PC, there was no problem. I open the box, unplug the USB adapter and plug directly the disk first into a converted SATA+> USB without success, so I tried directly into a SATA cable on my PC (both data and power). The disk was not recognized, so I try again with original external drive box, but it was not working anymore....
I will try to find a similar drive this weekend on electronic shop (knowing the PCB swap may not anyway). I would appreciate any suggestion for finding the reason of the problem
The small chip on the left seems to be a MOSFET (STJ009 (828J))
As mentioned I below site, the bios seems to be located on the controller
I will give a try for another disk with same PCB type BF41-0006B) and try to find a company being able to move chip.
One silly question: rather than moving PCB, is it possible to move the disk cylinders themselves from one disk to another?
Thanks a lot to both of you for your help
I found the same drive today with the same PCB (small differences in chips last number or the zero resistor label (000 in previous case, 0 only here), but basically the same)
I moved the PCB to old drive, linked it to the SATA cables, and will a great surprise, the disk started to rotate, and Windows recognize it and its former contents.
I am now copying all data to a new disk
So this time, as mentioned in the other thread of fzabkar, the bios move was not necessary in case of Samsung.
So I am quite happy with the result, and at the end have got quite knowledge for this trouble resolution.
For conclusion, as in my case, Samsung PCB with number = FB41-00206B R00 was able to be exchanged to another disk without BIOS move which make the job quite easy. Disk model is Samsung HD103UI/JP1 1000GB F1_3D, REV. A
The one I had was made in 2009/02 and the donor one in 2008/10
Once again thanks to this site for having such exchange possible and thanks to both of you for your answers