I’m new to this board, and have been searching through posts. Hoping you can help, please?
I have a 1TB My Book (Essentials, I think) HDD. The power pack failed recently, and I suspect it surged as it was doing so, as the drive does nothing at all with the new pack.
I have tested some components on teh HDD control board, and wonder if someone could guide me please?
I have taken photos of the bridge PCB and the HDD PCB…
D4 has shorted (~0 ohms each way)
D3 has a high resistance one way, and 398 ohms the other way - is that good??
The zero ohm resistors are zero ohms, so I assume these are OK?
From my reading, it looks like removing D4 should fix this??
Is there something else I should be doing? Am I just deluded??
Look at the posts by fzabkar or send him a PM he is about the only one who has much knowledge about the boards. He has giuded people in making them usable again.
I haven’t had a reply from my PM to fzabkar yet, but have tried removing D4. This has made some difference, in that the hard drive spins up, but then stops after a few seconds. The blue light doesn’t light up.
Could I suggest that it may be a good idea to replace the diode, not just remove it?
In my experiences, these diodes are often used as a fail safe to make sure that you don’t put power the wrong way onto the board.
i have a seagate stay1000202 and i put my laptop adapter (19V) on it so it freid but now i have to remove my tvs 12V diode but the problem is were can i find it on my pcb?
