"Freezer trick" is not a very good idea if the data is important! Yes, sometimes it works, but people already brought twice to us the drive after they tried it and some heads were literally torn off! There is about the same level of humidity inside as outside, if ice is formed between head and...
This is often happening when NTFS driver crashes on some inconsistent metadata (it can be caused also by the failing sectors, but more often it's just a logical inconsistence because of the sudden power failure).
The best check is to connect the drive as a secondary to another computer and see...
What capacity does it report in BIOS?
There is a standard ATA command SET DEVICE CONFIGURATION what changes internal drive configuration.
It has an option to disable/enable reporting support for 48-bit LBA addressing.
with 48-bit LBA disabled, you will get 128Gb limit.
SMOOTHs burn all the time due to crap power supplies. Damage is not always visible.
Prognosis for the rest of the drive is good, unless heads crashed badly when the blowout occurred. But that happens not often.
About a PCB swap -
You might not get exactly the same disks as yours. Even if the...
Create large (~1Gb) archive with WinRAR from anything and then make "Test Archive Integrity". This is a quite good test for the whole system.
This kind of problem might appear if something prevents Windows from shutting down properly.
What is the filesystem?
Happens with ANY hardware. Most of the times when companies bring us RAID1, RAID5, RAID10 for recovery, they blindly trusted "redundant" system, and then their "reliable" array was taken out by lightning for example. (I know, I know the promises your UPS manufacturer gave you :). Or it was a...
The motor bearings are wearing out faster on vertically mounted drives because gravity pull the disc and the axle sideways. This effect is noticeable on heavily used drives.
WD is PATA?
Set jumper to CS, disconnect your CD-ROM and connect the drive alone to the CD-ROM cable. This way you are sure the IDE channel/cable works.