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Jared
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Mon Feb 26, 2018 1:30 pm

So, this case continues to not make sense based on what the customer describes, but I've solved it regardless.

So, after getting in a perfect match donor drive with same PCB, same FW, same P/N, etc. and putting the donor PCB on the drive does spin up. In terminal this is what I'm getting:

Code: Select all

DSA off
UD..OK : 39 444
VN off
SHK off
PK_3   C:   157 H:2
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO= -  4
A1G= 1340 A2G=    7 SWG= -  2
Rvcm=  11044 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
DSA off
UD..OK : -2 423
VN off
SHK off
PK_3   C:    24 H:3
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    0
A1G= 1338 A2G=    7 SWG=   17
Rvcm=  11031 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
AP:3 C: 30465->  4154 H:0->4 AP Cnt: 65
DSA off
UD..OK : 17 447
VN off
SHK off
PK_3   C:    85 H:4
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO= -  1
A1G= 1340 A2G=    7 SWG=    4
Rvcm=  11044 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
AP:3 C: 30465->  7333 H:0->5 AP Cnt: 66
DSA off
UD..OK : 4 445
VN off
SHK off
PK_3   C:    68 H:5
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    4
A1G= 1341 A2G=    7 SWG= -  1
Rvcm=  11051 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
AP:3 C: 30465->515944 H:0->0 AP Cnt: 67
DSA off
UD..OK : -1 441
VN off
SHK off
PK_3   C:    16 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    5
A1G= 1339 A2G=    7 SWG=   11
Rvcm=  11038 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
SK C:  4885 H:1
ExTm4SR: 3247
AP:1 C:  4885->  7429 H:0->0 AP Cnt: 68
UF4 1VE
UF4 1VE
UF4 1VE
SK C: 10996 H:3
SR:0
AP:1 C: 10997->  7429 H:0->0 AP Cnt: 68
UF4 1VE
UF4 1VE
UF6 GE
SK C: 13690 H:3
SR:1
AP:1 C: 13690->  7429 H:0->0 AP Cnt: 68
SO_1
DSA off
UD..OK : 11 450
VN off
SHK off
PK_4   C:   128 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=   13
A1G= 1341 A2G=    7 SWG=    5
Rvcm=  11051 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
UF4 1VE
UF4 1VE
SK C: 16359 H:3
SR:2
AP:1 C: 13690-> 16357 H:0->3 AP Cnt: 69
UF4 1VE
UF4 1VE
SO_1
AP:3 C: 13690-> 16905 H:0->0 AP Cnt: 69
DSA off
UD..OK : 5 488
VN off
SHK off
PK_4   C:   189 H:2
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    3
A1G= 1339 A2G=    7 SWG=   13
Rvcm=  11038 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
SK C:  3954 H:2
SR:3
AP:1 C:  3954->  7429 H:0->0 AP Cnt: 70
DSA off
UD..OK : 13 427
VN off
SHK off
PK_1   C:   267 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=   12
A1G= 1344 A2G=    7 SWG= - 25
Rvcm=  11070 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
DSA off
UD..OK : -25 462
VN off
SHK off
PK_3   C:    33 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    4 A2O= - 28 SWO= -  7
A1G= 1341 A2G=    7 SWG=    4
Rvcm=  11051 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
DSA off
UD..OK : 4 450
VN off
SHK off
PK_3   C:    24 H:1
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    8
A1G= 1339 A2G=    7 SWG=   20
Rvcm=  11038 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
SK C:  8202 H:2
ExTm4SR: 2557
AP:1 C:  8202->  7429 H:0->0 AP Cnt: 71
UF4 1VE
SK C:  5036 H:1
SR:0
AP:1 C:  5036->  7429 H:0->0 AP Cnt: 71
UF4 1VE
UF4 1VE
SK C: 21142 H:2
SR:1
AP:1 C: 21141->  7429 H:0->0 AP Cnt: 71
UF4 1VE
UF 3 1stGrayErr Hd:1
UF4 1VE
UF 3 1stGrayErr Hd:3
SK C: 20952 H:4
SR:2
AP:1 C: 20952->  7429 H:0->0 AP Cnt: 71
UF4 1VE
UF4 1VE
UF4 1VE
UF 3 1stGrayErr Hd:3
UF4 1VE
UF4 1VE
UF 3 1stGrayErr Hd:0
UF5 1SE
SK C: 19075 H:2
SR:3
AP:1 C: 19075->  7429 H:0->0 AP Cnt: 71
DSA off
UD..OK : 20 611
VN off
SHK off
PK_1   C:    21 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO= - 10
A1G= 1339 A2G=    7 SWG=   11
Rvcm=  11038 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
DSA off
UD..OK : 11 449
VN off
SHK off
PK_3   C:    79 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO= - 10
A1G= 1342 A2G=    7 SWG= - 13
Rvcm=  11057 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF 3 1stGrayErr Hd:1
DSA off
UD..OK : -13 439
VN off
SHK off
PK_3   C:    37 H:1
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO= - 12
A1G= 1341 A2G=    7 SWG= -  4
Rvcm=  11051 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
SK C:  3217 H:2
ExTm4SR: 1996
AP:1 C:  3216->  7429 H:0->0 AP Cnt: 72
UF4 1VE
UF4 1VE
SK C: 10311 H:2
SR:0
AP:1 C: 10311->  7429 H:0->0 AP Cnt: 72
UF4 1VE
SK C: 12229 H:1
SR:1
AP:1 C: 12229->  7429 H:0->0 AP Cnt: 72
UF5 1SE
UF4 1VE
UF4 1VE
SK C: 23025 H:3
SR:2
AP:1 C: 23025->  7429 H:0->0 AP Cnt: 72
UF4 1VE
UF4 1VE
UF4 1VE
SK C: 26252 H:3
SR:3
AP:2 C: 26252->  7429 H:0->0 AP Cnt: 72
DSA off
UD..OK : -4 437
VN off
SHK off
PK_1   C:    24 H:0
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done
A1O=    3 A2O= - 28 SWO=    2
A1G= 1339 A2G=    7 SWG=   11
Rvcm=  11038 mOhm
TgtCyl= 5810
Ulatch= 2000 mips
Load  = 3000 mips
LD..OK
DSA on
UF4 1VE
UF4 1VE
UF4 1VE
SK C:  6339 H:3
ExTm4SR: 728
AP:1 C:  6339->  7429 H:0->0 AP Cnt: 73
UF4 1VE
UF4 1VE
UF4 1VE
SK C:  8535 H:3
SR:0
AP:1 C:  8535->  7429 H:0->0 AP Cnt: 73
UF4 1VE
UF5 1SE
UF4 1VE
SK C: 22767 H:3
SR:1
AP:1 C: 22766->  7429 H:0->0 AP Cnt: 73
UF5 1SE
SK C: 27536 H:1
SR:2
AP:1 C: 27536->  7429 H:0->0 AP Cnt: 73
UF4 1VE
UF4 1VE
SO_1
AP:1 C: 27536-> 22052 H:0->1 AP Cnt: 73
DSA off
UD..OK : 11 459
VN off
SHK off
PK_4   C:    35 H:2
VDAC Offs K0 ............Done: -127
VN on
SHK on
VBEMF Offs ....Done
VBEMF Gain ....Done


My initial thoughts again is that it's bad read/write heads, which would make sense given that it's described as having been dropped. But a drop doesn't explain how the original PCB went bad.

Just to be absolutely sure, I went ahead and moved the original ROM chip over to the donor board and.....whalla!!! It IDs, and I'm reading data from all heads at around 100Mb/s. So aparently Samsung must have more adaptives stored in the ROM code of these newer models than older ones did.

Perhaps the computer guy who brought it in didn't get the correct story from his customer of what happened either. I can't see how this is the result of a drop in any event.

Regardless, case solved and data recovered. :D

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Bankole Oladoja
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Mon Feb 26, 2018 4:09 pm

Jared wrote:
Bankole Oladoja wrote:It could be a dead PCB..


As I said in the original post, the drive stopped spinning after it was dropped. Super unlikely that it's related to the PCB.


I said so based on experience I had once with a Samsung, and I have also stoped believing what Clients says...
Oladoja Bankole
Exclusive Data Recovery Lab. EDARLAB
Abuja, Nigeria.
http://www.edarlab.com
Tel: 08032419528

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Jared
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Mon Feb 26, 2018 4:49 pm

Yeah, I'll admit, you were right in this one case. Even though there's no logical explanation based on the case info.

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pclab
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Mon Feb 26, 2018 5:34 pm

Could it be that when it was dropped there was some kind of electric problem? Over the USB cable or power supply....
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lcoughey
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Tue Feb 27, 2018 8:45 am

I find that sometimes the client is led to believe the cause due to misdiagnosis by their technicians. That is, the technician says that the drive isn't spinning and assumes that it is because it dropped. So, he tells his client that the drive was dropped and not spinning and then refers them to a data recovery lab who then has to figure out what is going on.

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Jared
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Not Spinning After Drop ST2000LM003 / HN-M201RAD/AV2

Tue Feb 27, 2018 9:37 am

lcoughey wrote:I find that sometimes the client is led to believe the cause due to misdiagnosis by their technicians. That is, the technician says that the drive isn't spinning and assumes that it is because it dropped. So, he tells his client that the drive was dropped and not spinning and then refers them to a data recovery lab who then has to figure out what is going on.


I'm thinking it's something more to this effect too.

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