Okay so i accidentally plugged in my laptop cord into my 1TB My Book and now its not working. I’ve been searching and it sounds like its the 12V TVS diode where the only advice i can find is to take it out. Impatient me, i opened it, found a fried part near the power and took it out because as far as i know it cant do worse since it was fried crispy anyways. It looks like it was L4 or maybe J4 but it was illegible from burn marks.
I’m not sure what type of mybook i have but ive noticed it’s different from others ive seen where as their SATA boards (the green one right?) have more stuff on it.
Mine is MDL: WD10000H1U-00
Here’s a pic of the whole board:
http://img815.imageshack.us/i/img0110cz.jpg/
Here’s a pic of the area where the part i took out was and burn mark remains(blurry zoom, other pic might suffice):
http://img638.imageshack.us/i/img0111it.jpg/
I have alot of important stuff on my 1TB so if it cant be fixed is there another way to retrieve the data? I have a laptop if that matters.
Thank you for reading!
Hello,
I’m not sure if this can be fix, I’ll suggest you to contact the user fzabkar he’s like the guru of circuit boards.
The photo is of the USB-SATA bridge board. L4 is an inductor. L4 and C14 appear to form a low pass filter that cleans up high frequency noise on the supply.
The 12V TVS diode, D4, is on the drive’s own PCB. There will also be a zero-ohm resistor, R64, close by.
I suspect that the overvoltage resulted in a shorted D4 on the hard drive’s PCB. The subsequent overcurrent then caused the failure of L4 on the bridge PCB.
The fix would be to remove D4, flow a blob of solder over R64 (if it is open circuit), and then replace L4 with a wire link.
Alternatively, you may be able to connect the drive to your motherboard’s SATA port. However, if the bridge chip at U6 is an INIC-1607E, then your data will be encrypted, in which case you will need to repair the bridge board, or replace it with one from an identical external HD.
sorry but im not seeing exactly what the PCB is. Heres pics of everything thats inside the casing minus the USB-SATA bridge board since i already posted pics above.
http://imageshack.us/photo/my-images/580/img0211m.jpg/
http://imageshack.us/photo/my-images/221/img0212rly.jpg/
http://imageshack.us/photo/my-images/818/img0210cg.jpg/
Sorry to respond so late and bump up a thread but id rather do that than start a new one
You’ve shown us the uninteresting side of the PCB. 
The interesting stuff is here:
http://www.24au.ru/photo/398/1990482.jpg
R67 and D4 are in the top right corner (D4 is just off the picture).
Hey fzabkar, i have a wd2500bevs. the enclosure reads wd2500u017. It has stopped working. It still spins and clicks for a few seconds but quits and my desktop wont recognize it. Its an older drive and noone has parts. It doesn’t show any burn marks on the outside of the logic board. What now?
If a drive spins up, then the circuit board is probably OK. Your problem sounds like it is internal to the drive, ie heads or media.
ah i see now thanks. what kind of screwdriver do i need to get it out though?
ok so i popped out the d4 and i can hear the drive moving but i still am not getting it on my computer to open it.
btw i followed all previous steps lol
try the freezer trick.i had one that did that. i threw it in the freezer over night in a ziploc and i was able to get the data from it before it warmed up
Which diode, if any, was shorted, D4 or D3?
You say the drive now spins up. Is it attached to a SATA port on your computer’s motherboard, or is it back in its USB enclosure?
What are the markings on the large square chip on the bridge board (4061-705059)? Is it an Initio INIC-1607E? INIC-1607EP?
