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IBM Deskstar - PCB Power Surge

 
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Dave@LDF4N6
Deadharddrive regular


Joined: 03 Apr 2011
Posts: 10
Location: Louisville, KY

PostPosted: Fri Aug 19, 2011 8:19 pm    Post subject: IBM Deskstar - PCB Power Surge Reply with quote

I have an IBM Deskstar IDE Drive.
Model: IC35L060AVV207-0
P/N: 07N9212
MLC: H69205
Made In: Thailand

PCB:
07N9226
H69056

The drive sustained an electrical surge from a recent storm. Oscillogram shows a short spike on the 12V at the beginning but flat lines after that. The 5V shows a steady 115 mA. Obviously I have a PCB problem.

http://intelligentdatarecovery.com/images/Bad_PCB.png

I assume the best course of action is to replace the PCB and move the Adaptive SMD. Can someone confirm that U5 is the correct and only chip that needs to be swapped to the donor PCB?

http://intelligentdatarecovery.com/images/IBM_Deskstar_PCB_Front.jpg
http://intelligentdatarecovery.com/images/IBM_Deskstar_PCB_Back.jpg

When matching the PCB for an IBM Deskstar, are the numbers below the only ones I need to be concerned with for a match?
07N9226
H69056

Any other thoughts would be most appreciated.
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fzabkar
Deadharddrive regular +3


Joined: 02 Apr 2010
Posts: 210

PostPosted: Sat Aug 20, 2011 6:26 am    Post subject: "NVRAM" Reply with quote

U5 (93LC66) is what is commonly referred to as the "NVRAM". This chip needs to be transferred to your donor. If the boards are not a perfect match, then I expect that U6 may need to be transferred as well, but I'm not a data recovery professional.

My HDD IC database may help you identify the components:
http://www.users.on.net/~fzabkar/HDD/HDD_ICs.txt

BR93LC66, Rohm, marking LC66, 4096-Bit Serial EEPROM:
http://www.romservice.ru/datashee/br93lc66.pdf
http://www.datasheetarchive.com/pdf-datasheets/Datasheets-27/DSA-525732.pdf

AT45DB011B, Atmel, 1-Megabit, 2.7V - 3.6V, Serial DataFlash:
http://www.datasheetcatalog.org/datasheets2/15/153916_1.pdf
http://www.atmel-grenoble.com/dyn/resources/prod_documents/doc1984.pdf
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