how to repair my wd external hard drive

I accidentally plugged the wrong power adapter to my 640 gb WD external hard drive. After that, my hard drive won't work anymore. I tried to disassemble my hard drive to see if I could fix the problem.

I thought that I damaged the "serial ata bridgeboard power supply" since I used a wrong power adapter. But then when I disconnected the bridgeboard from the hard drive, I noticed that the light would lit and the light of the bridgeboard would turn off again if i try to connect it again from the hard drive. Can anyone tell me what needs to be done?

https://www.dropbox.com/s/rdbehq9xjvus3m9/bridgeboard%20connected%20to%20hard%20drive.jpg
(bridgeboard doesn't light when plugged)


https://www.dropbox.com/s/sks2o0bt2pj35ka/bridgeboard%20disconnected%20from%20hard%20drive.jpg(light came on when I disconnected the bridgeboard from the hard drive)
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  1. There are two parts to this:
    The hard drive, and the enclosure (incl the circuit board)

    Can you remove the drive and connect it to another PC? Does it work?
    The circuitry of the enclosure is likely toast from using the wrong power adapter.
  2. I have already removed the drive from the enclosure while the circuit board is still attached to the harddrive.

    If the circuitry is likely toasted, how come the light still turns on once I've detached it from the hard drive?

    https://www.dropbox.com/s/utai0brkyzqvajx/2013-11-19%2003.35.10.jpg
  3. Also, if it is the circuitry that was fried. Does that mean my hard drive is still in tact and all I needed to do is buy a new enclosure?
  4. Razor34 said:
    Also, if it is the circuitry that was fried. Does that mean my hard drive is still in tact and all I needed to do is buy a new enclosure?


    wont know untill you follow the advice that was given. its a process of elimination.
  5. I already removed the drive and tried it on another pc but it still doesn't work
  6. Razor34 said:
    I already removed the drive and tried it on another pc but it still doesn't work


    You've removed the drive and connected via a SATA cable? And it still doesn't work?

    Then the drive is likely toast.
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