Hard drive failure… 3 1 TB drives  dead?

I have had three 1 TB drives fail after very little use.
The first two drives were Western Digital Green  1 TB drives.   Best Buy was overstocked and selling the Mac version of its USB Western Digital drives.  I took the drives out of the cases and Installed them directly into an G4 MDD with a Sonnet's Tempo™ Serial ATA PCI adapter card)
When neither drive would operate, I learned that the sonnet card  required me to install a jumper on the hard drives.  I inserted the jumpers in the correct location, and both drives worked brilliantly… For about three weeks.
Now, both Western Digital drives are useless. One of the drives doesn't even spin up, the other  is inconsistent and has a lot of read/write errors. Now, disk utilities cannot reformat the drive.
Suggestions? Could it be of the logic board on the drive? Would it be worth replacing that?
I purchased a Seagate barracuda one gig drive (Hard drive only) and put it into an external case which had  2 FireWire 800 and  1 SATA ports. The Seagate is a nice solid drive and never  gave me any trouble… UNTIL… I accidentally plugged the wrong adapter into the external case. The power adapter was .5 A output and the correct power adapter was one amp output.
The drive worked at first and then suddenly stopped.  With the correct power adapter, the case works fine with other hard drives… So it's not the case. But the drive is fried. It will not spin up. I tried installing it in the computer, but it was a no go. The circuit board must be fried.
AGAIN… There was a lot of critical information on the barracuda drive, and I wonder if I replace the circuit board would it do any good?
Thanks for anyone that can help!

What Mac are you using? Western Digital drives do not work with all of them.

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    iBook G4   Mac OS X (10.4.3)  

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    I have an HP Pavillion dv6-6150us Entertainment PC.     Windows 7
    Yesterday a message appeared while downloading plot maps from the county:
    "Windows detected a hard disk problem"
    The following hard disks are reporting failure:
    Hitachi HTS547575A9E384
    VolumeC:\D:\F:
    Message continues to appear; hard disk failure alert appears at startup.
    Looking for suggestions for a compatible hard drive replacement..... one that will last more than 2 yrs.
    Need to know what  I can get...... and what to avoid.
    Thanks
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    Hi:
    I would get a WD Scorpio Black...5 yr warranty
    The 7,200 rpm will offer better seek times than the stock 5,400 RPM drive yours came with.
    There may be a slight decrease in battery time between charges over what you currently experience.
    http://www.newegg.com/Product/Product.aspx?Item=9SIA2W014M8026
    If you can't live with that, then I would recommend this one...2 yr warranty.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16822236497

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