sorry for my english!
i got an old Samsung HDD which has a broken PCB. I already bought 3 other kinds of this HDD an switched the boards. It spins up with another PCB but makes a endless clicking sound. I think it it trying to find the right "jump in point" but cannot because the firmware or the bios-chip is not exactly the same.
So i made some measurements and comapred them to the other boards. And just by making these measurements (just ohm, hdd turned off) i broke another PCB.. Oo
And it has the same symptoms now. So now i am stuck and don't know what to do. They diodes should be okay.
My idea now is just to fix the baord of my original HDD. I can't be something to hard to fix. Because i think it just lay around for years after workinmg good. And when i tried to start it again after years, the PCB is broken!? Furthermore you cannot see any damages on the board neither burned stuff or so.
I attach some measurements i made: (red is the original board, and green one of the other before it broke too
.. both ohm continuity measurements) (yellow was the only "turn on" volt measurement of other boards and red the original)https://www.dropbox.com/s/c8bxq4kfcou45gf/sasmsungSP1604n.jpg?dl=0
Unfortunately my external HDD connector broke a few minutes ago because i pulled the wires too hard :S. Any advice of a cheap one?
Thanks in advance and cheers!!