I have WD2500jb, clicking , i opened in clean room, i noticed a cotton particle on one of the heads, simply i cleaned it, but when i returned the upper magnet, i noticed that platters are hardly rotated, when i remove upper magnet, they rotate freely, note: HDA does not have screw, they rotate freely around an axis, when we run the drive, platters are not rotating. Could any one help. Moreover, i read here something about head allignment, how do we do it.


Thank you

There is your first mistake.



Mistake number 2.


The simplest answer is you dont. Send it to a professional.

Also, you say the HDD was clicking, yet platters to not rotate? If platters to not rotate, heads will not attempt to seek and will not click.

does motor rotate freely if turned manually?

Thank you

originally, the platters rotate freely, but it was clicking, when i opened , and remove upper magnet, and used special combs , withdraw the heads , i saw the dust particle, i removed, carefully, then i put back the hda, and insert them, without damaging them, when i put upper magnet, platters are hard to rotate (by hand), when remove upper magnet, they rotate easily by hand. That is it.

The initial clicking that prompted you to open the cover, was it a consistent clicking, or did it click several times and power down?

Either way, you have opened the disk and lost the alignment, so besides any physical repairs that have to be made, you have a big problem with the alignment also. At this point I think a professional is needed.

Is data important to you?

The drive was rotating, and clicking, I use PC3k, I disabled heads one by one, it did not work

Yes data is important, but can lead me, or some materials about head allignment for WD. Originally, the drive clicks four times, then stops clicking

don't waste our time. this drive data important or not? when your drive clicking then you open it immediately?

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data recovery service[/b]

If hdd clicks on wd, could be PCB, SA, or MHA problems, if u have the right tools and the experience u can determine where its the problem the exchange of heads on wd, its not a easy job

Let's get back to your original question of why the platters don't rotate freely after replacing the magnet: it's obvious the magnet is not seating properly or is binding against the head assembly. And if it's determined that there is binding against the head assembly then you may have damaged the heads. At any rate, careful replacement of all parts will most likely cure the rotation issue. Of course, this does not address the issue of the clicking but I'm sure you'll find no shortage of suggestions here on that one.

Thank you msurgeon, you are serious and nice , I will try to make something and inform you. For those who are jocking and assume that they are professionals and we are babies, i tell them that is not nice, we gain knowlege, we acquire it, they were not professional, and they became like this, and others may became same , less or even better!

We need each other, this is a golden rule, Believe me

But takes a lot of time, patience, money, hard work, and many many head aches to learn, and by committing yourself in learning and acquirung this knowledge is what effectively makes you a great DR engineer. It would all be worthless if everything you worked so hard in learning, you gave out in a public forum with nothing in return.

I wish when I first started DR everyone told me all their secrets, would have saved me a lot of hard work. But then, I would have had knowledge but no experience.

You have to work things out for yourself, its the only way to stay one step ahead in DR.

well imaarouf, if some one see a people who was his first post, and he tolds about head exchange, we dont have a way to know the experience from that people, a lot of people tried to did a data recovery by selft, that happend at many parts of the world here on my country its the most biggest problem, by this reason, , if u check posts, there are a discussion about still´s teaching to the newbies or no, because many times, when they tried to did a head exchange they damaged MR sensors, on the process, left finger prints over platters, and the worst they think "exchanging platters" and mounting on another hdd i can get data back causing lossing alignment, centering and some times left the hdd´s "unrecoverable" even we are recording a video, where explain why not to do a head exchange, platter exchange without experience, and the most important without the right diagnostics,
by this reason was that answers, if u are a data recovery engineer with many years of experience we cant know that, like u know"


Regards