July 14th, 2021, 16:36
July 15th, 2021, 12:00
July 15th, 2021, 13:10
July 15th, 2021, 14:38
July 15th, 2021, 14:39
fzabkar wrote:This PCB has two e-fuses. These are the 10-pin ICs near the SATA power connector. If you can post a better photo of this area, I can show you what to check.
July 15th, 2021, 14:41
Lardman wrote:Crap. I'd not seen the board, my bad I'll go and sit in a corner facing the wall for a while.
July 16th, 2021, 14:11
July 16th, 2021, 16:26
July 17th, 2021, 1:11
fzabkar wrote:NIS5232, ON Semiconductor, electronic fuse, 12V, 4.2A, marking 232, DFN10:
https://www.onsemi.com/pdf/datasheet/nis5232-d.pdf
July 17th, 2021, 3:09
July 17th, 2021, 5:38
July 17th, 2021, 7:46
fzabkar wrote:Can you measure +5Vout and +12Vout?
I can't see the markings on the ICs. Can you tell us what they are?
July 17th, 2021, 13:55
July 17th, 2021, 13:56
fzabkar wrote:E-fuses have been around for years. In fact some very old Samsung HDD PCBs had an unpopulated location reserved for these components.
The latest HDDs now have a dual e-fuse (12V & 5V) in one 8-pin IC, something like these:
https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP5094/document_id/4894/
https://www.st.com/resource/en/datasheet/stef512gr.pdf
July 18th, 2021, 13:32
fzabkar wrote:You can flow a blob of solder over the fuse, if there are no other faults.
If you want to replace the fuse ...
Littelfuse Surface Mount Fuses, N = 2A, S = 4A:
http://www.farnell.com/datasheets/48294.pdf
July 18th, 2021, 13:39
MagicByte wrote:For my two Seagate Barracuda, I just had to "short" the fuse, remove the +5V STV diode, after that there was no short between the +5V/+12V and GND. Both drive spun up and all data was intact. Do you by any chance know which TVS diode can be used as a replacement?
http://www.shenobi.dk/hdd/PCB-Barracuda-1.jpg
July 18th, 2021, 13:59
MagicByte wrote:fzabkar wrote:Can you measure +5Vout and +12Vout?
I can't see the markings on the ICs. Can you tell us what they are?
So I have 2 PCBs for the Seagate drives, clearly made by different manufactors but same revision. (probably 2nd source).
1st PCB:
+5V IC - AMAM 099 - from what I can make out
+12V IC - 232 RNL
http://www.shenobi.dk/hdd/PCB-IronWolf-4.jpg
I can't measure the +12Vout because my probes are too thick to get to the pins
Between +5Vout and GND - around 44Kohm. It keeps rising the longer I measure. +5Vin and +5Vout 44Kohm, again, it keeps rising the longer I measure.
2st PCB:
+5V IC - J9 0mS 5-something-0
+12V IC - ADTM 564
http://www.shenobi.dk/hdd/PCB-IronWolf-5.jpg
Between +5Vout and GND - 34.6Kohm. +5Vin and +5Vout 32.5Kohm.
July 19th, 2021, 4:46
That's 3 more than I did Feels good doesn't it, hopefully the SSD's will be as straightforward.MagicByte wrote:Thanks, I managed to fix 3 of my drives today.
July 19th, 2021, 9:36
fzabkar wrote:E-fuses have been around for years. In fact some very old Samsung HDD PCBs had an unpopulated location reserved for these components.
The latest HDDs now have a dual e-fuse (12V & 5V) in one 8-pin IC, something like these:
https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP5094/document_id/4894/
https://www.st.com/resource/en/datasheet/stef512gr.pdf
July 27th, 2021, 5:07
Lardman wrote:That's 3 more than I did Feels good doesn't it, hopefully the SSD's will be as straightforward.MagicByte wrote:Thanks, I managed to fix 3 of my drives today.
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