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ST9500423AS - PCB 100619769 Dead

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gps31

Post subject: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 0:18

Joined: January 18th, 2010, 23:53
Posts: 346
Location: india

HDD Model : ST9500423AS
PCB : 100619769 Rev. A

Problem: No Spin , No Strange Sound such as motor struck

in PCB: One of the capacitor shorted and Removed then no short anywhere with ground

i m getting voltage near TVS ~2.8V as mentioned in photo ( PCB shown here is not original PCB)

Red square marked may be inductor, Input ~5V and Output only ~2.8V

Experts pls advice let me remove that and bridge to get ~5V ?

Sorry for my poor description

Note: No Donor PCB, it contains ~2GB Photos only

Attachments:

ST9500423AS-HDD-PCB-Board-100619769-REV-A.jpg [ 225.43 KiB | Viewed 9778 times ]

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fzabkar

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 1:48

Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia

I'm no expert but I would reflow the solder to the inductor and measure its resistance. I would also determine whether there is continuity between the inductor and the shorted component.

_________________
A backup a day keeps DR away.

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gps31

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 4:10

Joined: January 18th, 2010, 23:53
Posts: 346
Location: india

Hello Mr.fzabkar,

Answer to the questions

1. inductor Resistence : 143
2. Yes, there is continuity between the inductor and the shorted component.

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fzabkar

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 4:25

Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia

ISTM that the shorted component may have been a bypass capacitor for the motor controller's 5V supply. The inductor would then have been stressed by the short circuit. I would be tempted to flow a blob of solder over it, but first I would like to confirm whether the output end of the inductor does in fact connect to the 5V supply pins of the switchmode regulator ICs.

The top left corner of the PCB has a small regulator IC. There is another regulator to the right of the serial flash memory. Can you tell me the markings on these ICs? I propose to identify the Vcc pins of these ICs and then confirm that they connect to the inductor. This will prove that the component is indeed in series with the 5V supply. I believe that the inductor and the two adjacent capacitors constitute a low pass LC filter.

_________________
A backup a day keeps DR away.

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fzabkar

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 4:54

Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia

I suspect that the circuit looks like this:

Code:

          inductor
            ___
+5V o--+----UUU----+---+--o  filtered +5V
       |           |   |
       | TVS       |   |  filter
SATA   - diode    --- --- capacitors
       ^          --- ---
       |           |   |
Gnd o--+-----------+---+--o

_________________
A backup a day keeps DR away.

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gps31

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 5:50

Joined: January 18th, 2010, 23:53
Posts: 346
Location: india

I tried my Best for your question and can't read the chip numbers

Green lines are direct connections

Attachments:

PCB-100619769-REV-A_New.jpg [ 235.11 KiB | Viewed 9720 times ]

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fzabkar

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 6:49

Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia

Thanks, I'm now convinced that my diagram is correct. I would try flowing a blob of solder over the inductor. If you can backup the ROM beforehand, then that would be advisable.

_________________
A backup a day keeps DR away.

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gps31

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 4th, 2016, 7:35

Joined: January 18th, 2010, 23:53
Posts: 346
Location: india

thanks first i will backup the rom then will continue as u said

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gps31

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 6th, 2016, 11:55

Joined: January 18th, 2010, 23:53
Posts: 346
Location: india

Thx Mr fzabkar,

Now the drive spin and detected in windows but take too much time but disk can't initialized (Shows correct Size)

Terminal Log

Quote:

EarlySpinup Enabled
Rst 0x10M
(P) SATA Reset

RAW OFF
PASS
SIM Error 3005
RW Error
[PORFAIL:MC.disabled]

ASCII Diag mode

F3 T>

Then Tried to read SYSFiles
Result

Quote:

Got F3 T>r01b

DiagError 0000000E

The same result for any sysfile from copy 0 but i can read any sysfile from copy 1
So i written sysfiles 1B, 35, 28, 29, 133 from copy 1 to copy 0 without any errors

After Power on reset again i can't read any sysfile from copy 0

i think this model has no 17a since both copy return

Quote:

F3 T>r17a

DiagError 00000024
F3 T>r17a,3,1

DiagError 00000024

ctrl+X returns with some errors

Quote:

RW 32 Cmds
Ts(ms) dT(ms) xT(ms) Type Option Mode St EC Info
188390 99999999 7 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
00223C4 L 00000040 BO 000000 BES 005F740.006093F.005F740
197396 9006 2 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022404 L 00000040 BO 000000 BES 005F740.006093F.005F740
206415 9019 1 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022444 L 00000040 BO 000000 BES 005F740.006093F.005F740
215410 8995 8 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022484 L 00000040 BO 000000 BES 005F740.006093F.005F740
224435 9025 9 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
00224C4 L 00000040 BO 000000 BES 005F740.006093F.005F740
233431 8996 6 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022504 L 00000040 BO 000000 BES 005F740.006093F.005F740
242439 9008 8 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022544 L 00000040 BO 000000 BES 005F740.006093F.005F740
251440 9001 8 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022584 L 00000040 BO 000000 BES 005F740.006093F.005F740
260461 9021 4 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
00225C4 L 00000040 BO 000000 BES 005F740.006093F.005F740
269459 8998 8 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022604 L 00000040 BO 000000 BES 005F740.006093F.005F740
278478 9019 6 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022644 L 00000040 BO 000000 BES 005F740.006093F.005F740
287473 8995 4 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022684 L 00000040 BO 000000 BES 005F740.006093F.005F740
296479 9006 8 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
00226C4 L 00000040 BO 000000 BES 005F740.006093F.005F740
305483 9004 5 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022704 L 00000040 BO 000000 BES 005F740.006093F.005F740
314499 9016 6 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022744 L 00000040 BO 000000 BES 005F740.006093F.005F740
323498 8999 9 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022784 L 00000040 BO 000000 BES 005F740.006093F.005F740
332513 9015 3 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
00227C4 L 00000040 BO 000000 BES 005F740.006093F.005F740
341507 8994 2 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022804 L 00000040 BO 000000 BES 005F740.006093F.005F740
350508 9001 2 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0022844 L 00000018 BO 000000 BES 005F740.006093F.005F740 697883 347375 345 02 002241 000000 2 43110081 XFR RD SYS LBA B 00000
0004A89 L 00000001 BO 000000 BES 005AC00.005AC3F.005AC00 698228 345 2149 02 002241 000000 2 43110081 XFR RD SYS LBA B 00000
0004A89 L 00000001 BO 000000 BES 005AC00.005AC3F.005AC00 707468 9240 337 02 002241 000000 2 43110081 XFR RD SYS LBA B 00000
0004A89 L 00000001 BO 000000 BES 005AC00.005AC3F.005AC00 707805 337 2150 02 002241 000000 2 43110081 XFR RD SYS LBA B 00000
0004A89 L 00000001 BO 000000 BES 005AC00.005AC3F.005AC00
717332 9527 3 02 002241 000000 1 00000080 XFR RD SYS LBA B 00000
0026B75 L 00000001 BO 000000 BES 005AC00.005AC3F.005AC00
922078 204746 7 02 005041 000000 1 00000080 XFR WR SYS LBA B 00000
0004A89 L 00000001 BO 000000 BES 005AC40.005AC7F.005AC40
935690 13612 0 27 005041 000000 1 00000080 SND_SRV 516F 0000 0000
0000 0000 0000 0000 0000 0001 008B 00D0
0000 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935692 2 0 27 005041 000000 1 00000080 SND_SRV 0501 0000 0000
0000 0000 0000 0000 0000 0001 0168 00D0
0168 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935692 0 0 27 005041 000000 1 00000080 SND_SRV 0106 0000 0000
0000 0000 0000 0000 0000 0001 0168 00D0
0168 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935692 0 0 27 005041 000000 1 00000080 SND_SRV 0501 008F 0000
0000 0000 0000 0000 0000 0001 5FC0 00D0
5FC0 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935692 0 1 27 005041 000000 1 00000080 SND_SRV 0501 0144 0000
0000 0000 0000 0000 0000 0001 FBCF 00D0
FBCF 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935693 1 0 27 005041 000000 1 00000080 SND_SRV 0001 FBCF 0000
0000 0000 0000 0000 0000 0001 FBCF 00D0
FBCF 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD
935693 0 0 27 005041 000000 1 00000080 SND_SRV 0201 0000 0000
0000 0001 0000 0000 0000 0001 0000 00D0
FBCF 0000 0000 00EE 00
20 01AD 0CAD 09AC 13DF FEAC FAAC F2AD FAAD F6AD FBAD 09AD

Let me know what i have to do next i have only STcom tool

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jermy

Post subject: Re: ST9500423AS - PCB 100619769 Dead

Posted: April 6th, 2016, 12:48

Joined: March 19th, 2015, 15:01
Posts: 1388
Location: isreal

http://blog.acelaboratory.com/pc-3000-hdd-how-to-solve-no-host-fis-readystatusflags-error.html wrote:

SIM ERROR 3005 (mean that “format corrupted flag” in on and Translator is not loaded in RAM)

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