That's an excellent attitude. Good on you.

The first thing I would do is to determine the functions of each of the onboard DC-DC converters. Then you'll know which regulator powers a particular chip. You'll also determine where the preamp obtains its power.

If you have a digital multimeter, and if you upload a detailed photo of the PCB, I can try to help you.

Even if a repair is not possible, the autopsy may still be educational for both of us.

_________________
A backup a day keeps DR away.

I AM insured the best way possible. Backup, backup, backup. As I said, more than retrieving the info, I want the experience for that one time that its the only choice.

I always recommend a professional service and have a long time relationship with Ontrack. But, as you may know. It's quite expensive. So while a customer is willing to pay anything to get back its database, my cousin is not willing to pay top dollar to get back his little girl birthday pics.

I have dozens of dead drives. If I can bring back to life at least one, then it's worth it.

I'll take some pics and upload them, Tnx for trying to help

hello friends

we have:WD500AAKS-00A782
dcm HGNNNT2MAN, pcb stiker 2061-701590-L00 AD, date 28 sep 2009
two plates. doesn't spin up. after 10 seconds spins down.
not detected.

does someone has any clue?

tks
ephraim

If it does not spin up , how can it spin down?

spin up meant ready, maybe.

hello again

sorry for my bad explanation.

i ment the drive starts working, after about 5-10 seconds stops.

not really spins up.

ephraim

I have a clue.

_________________
Luke
Recovery Force Donor Inventory: 5,000+ Fully Cataloged HDDs & Growing

me too ... Spin up, faint movement of heads or even click after partial calibration then spin down ?

The flux capacitor might need to be reset.

_________________
Luke
Recovery Force Donor Inventory: 5,000+ Fully Cataloged HDDs & Growing

Ah, not the EGR valve ?

hello lcoughey and BlackST

tks for your answers

can u be so kind and tell me what are the flux, and EGR valve ?

what do u recommend to do?

tks a lot again
ephraim

hello BlackST

what does it mean

brgds
ephraim

hello friends

can anybody help with this case?
i was looking almost at whole hddguru. seemes complicated.

maybe the answer to reset the flux capacitor is the whole story?
can it be done easily? how?

if the story is too complicated can anybody give a reasonable quote?


brgds
ephraim

Ephraim,

I'm sorry that we have had a laugh at your expense...I seriously didn't think that my joke would have missed by anyone. The "Flux Capacitor" is the device that Doc invented in the movie, "Back to the Future," that allowed for time travel. The EGR valve is a car part designed to control emissions.

Anyway, it is clear that you are not ready for this type of project on your own and should take your drive to a data recovery professional.

Out of curiosity, how do you know that there are two platters in your drive?

_________________
Luke
Recovery Force Donor Inventory: 5,000+ Fully Cataloged HDDs & Growing

hello lcoughey

i had a feeling this is not going to be easy although i don't like the "go to professinal" type
of answers. there are a lot of so called "professional" in my neighborhood and it is rare they can do what we are not.
statistically.

we found that there are two plates after opening the hda very carefully.

if you still want to give good technical advise i'll appreciate a lot. even paying.

tks and brgds
ephraim

- Why not open the drive @ home for DIY?

Because the dust wich in the air much more bigger then the flying height of the head. (0.6-0.9 micron)
If only one piece of dust gets between the head and platter, then it will scratch the platter and free up more magnetic dust form the surface wich like to stuck to the heads and platters again to make more trouble...
Safely opening the drive can be done only on really clean environment, in an expensive cleanroom.

hello Victim2046

we all believe your comment is true. but i believe if u do it very very carefully the risk is minimum.
p.s i am looking for a long time for a location and/or tool to find out the no of platters inside the disk without opening it. do u know?


to my original question i received almost nothing? what does it mean?
either no body know?
or nobody like to share his knowledge?

brgds
ephraim

Ephraim,

It is clear that you will not be happy with the answer (which you have already received).

Your drive has bad heads or bad firmware -- or both. Neither you nor your clever neighbors can fix this problem without special expensive equipment and relevant experience.

_________________
http://www.datasaversllc.com