Hello folks,

first the HDD was BIOS recog. after a restart of the computer it was not recog. anymore. No spinning up - completely silent.
Seagate Barracuda 7200.12 500 GB - FW: CC45

bsy bug?
corroded contacts? -- attachment

any DIY recommendations? RS232 TTL adapter I have.. already reanimated 2 Seagate HDDs with that. But in that case I won't do anything wrong.

Best Greetings
Benjamin

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

If it's not spinning at all and silent then the PCB would be the first starting point.

First check the TVS top left of the PCB, if that's OK then get a new PCB of same P/N and you MUST swap the 8-pin "ROM" chip top left. Careful though, if you damage that you're in BIG trouble!

Good luck.

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PC Image Data Recovery
http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

That TVS is driving me crazy... i have to put very much pressure on a specific point with the COM (black) cable to get 0 OHM. Next time I try it pressure doesn't help... next time I get 0 Ohm again...

I'm only at the beginning to check a Diode correctly.. any recommendations?

Thanks so far!

Greetings
Benjamin

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

Splidit... I see no point in your comment. But maybe you could show me the steps I do mistakes in your view so I can be a better "gambler" in your terminology.

So far there are no indicators for me that this is a mechanical issue.. / it seems to be the TVS as prescribed above... Honestly I do not have the full knowledge... but as long as I don't open the drive and do nothing besides measuring I don't think I can do any harm.

Greetings Benjamin

edit:

Splidit, thank you fort that!

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

Splidit, thanks for your help sending me the links with very useful information - bet I will read that.
To calm you down a little bit: *no offence*
In many cases I send the requests to a partner or to Ontrack. It depends on various factors.

Acutally I need help in that case here... the 5 V TVS is high-ohmig in both directions. above 130 k in the direction I meassured it (see the picture above)... an 65 k in the other direction

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

I have the exact PCB layout like in the attached picture
http://www.hddoracle.com/viewtopic.php?f=24&t=123&p=149

then I found this manual:



Should be careful about that?



Answer: Not always, it's danger only if NRG is filled with some entries, if is empty it's ok to regen translators (m0,2,2,,,,,22).
You may check if NRG is empty with V40 command.

like in that post:
viewtopic.php?f=1&t=18907&start=40

Can I do any harm when I short circuit the Reading Points in the picture and get terminal access.. when NRG is empty can i regen translators?

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

measuring 100 ohm in the read cirucit - and 50 ohm in the write circuit... so the points should be the right ones? Just double-checked it and compared it to the pictures in the hdd-oracle thread.

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

Decided to let the ROM transfered (soldered) to a new PCB.

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

I like the "lets try everything maybe something will work approach".

That I will do let do . Thanks for support.

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

I would say check every possibilities and not fully try every possible step by yourself... You now the "data rec business" is very hard.. and it is not easy to find a way between spending 3000 € for a RAID recovery and the money the customer could afford and is willing to aford for that...
There is a difference between try everything and check everything...

For me it is important that wen someone has a problem to contribute to that problem. I'm the last one who is not wiling to pay for support.

At this point I want to express my gratitude to Sean / pcimage england who helped me a lot in that case and offered me his professional help with the ROM Swap thing. He made a big contribution by offering me his support without demanding money for initial consultation. I almost insisted him giving something for that. Because he gave me 30 minutes of his time. Instead I wrote a Google Review.

edit: I almost forgot Jared who helped me a lot in another case.

The attitude of helping each other and share knowledge and information is so important. Sharing knowledge means for sure giving money for that in exchange. Everything has to be fair in exchange... everyone has to live...

It seems for me such a big fight gaining knowledge without paying money for beeing in the elite PC3000 circle. And almost forced to upgrade it every I don't now...

In the end I want to express my gratitude to everyone who helped me with information actively or passively through this place sharing their knowledge in this forum.

Have a nice weekend everyone!!

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

Splidit, thank you for your help again. All the information I get from others and you in this forum will help (and already helped) to know what I can and what I can't do in the field of data recovery. My task is to be like a pioneer and find ways to help my customers in the interest of price , quality and speed. These factors should have a balance in the interest of my customers and my company. Maybe my direct form seems a little bit harsh... I'm curious like a little child. Asking many "perhaps stupid" (could be annoying or misunderstood) questions.

edit: have a nice weekend too! And thank you!

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

fzabkar & Spildit:
CAN'T thank the both of you enough for pointing that out. I hope this will teach ANYONE not to thoughtlessly copy (seemingly) "magic recipes" off the Internet!!

@fzabkar loved the somewhat ironic undertone in "professionals" *grin*

Thanks for your help via PM. Now I understand much better what you meant! It helped me to be more patient and humble. And hopefully studying intensely the field of data recovery. I behaved almost like it is a 1 week thing to learn... and that is wrong.

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

What could that be?

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart

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Fachwerkstatt für Data Recovery / Datenrettung in Stuttgart - Riedel IT - Ameisenbergstraße 30 - 70188 Stuttgart