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WD Hdd no power no spin

Last response: in Storage
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September 18, 2013 12:46:54 AM

Hi everyone,

My WD hdd recently stopped power up and no spin at all. I had checked the pcb no any obvious damage on it. I even tried to dis-solder the D4 component still failed to power it on.

Hdd model: WD5000AACS
PCB model: 2061-701444-K00 AB

Could anyone help on this?

More about : hdd power spin

a c 288 G Storage
September 18, 2013 2:20:33 AM

Was D4 shorted?
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September 18, 2013 2:40:51 AM

fzabkar said:
Was D4 shorted?


I got measured and don't think it is shorted. But I also removed it (D4) to try my luck but too bad it's the same. Last week when I boot up pc it happened did not show the secondary hdd in windows, after I reboot then it's fine. Yesterday when boot up pc again the hdd cannot be detected anymore (no power, no spin, no detected in BIOS).
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a c 288 G Storage
September 18, 2013 2:54:18 AM

The drive's original symptom may have responded to cleaning the J1 contacts with a soft white pencil eraser, but I don't know about your no-spin problem. It does look like a PCB fault, but your PCB does not have a chip at location U12, so a board swap is not a DIY proposition.

Try the eraser trick, anyway.
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September 18, 2013 3:16:24 AM

fzabkar said:
The drive's original symptom may have responded to cleaning the J1 contacts with a soft white pencil eraser, but I don't know about your no-spin problem. It does look like a PCB fault, but your PCB does not have a chip at location U12, so a board swap is not a DIY proposition.

Try the eraser trick, anyway.


I had tried the eraser trick at sata and power port contacts on pcb only. Later on I will try on J1 contacts. You are correct, my pcb does not have U12 chip. It use Marvell (8816745-TFJ1) controller chip. If really a pcb faulty, do I need to get an exactly same part number pcb as replacement?
Is there any other way that you think I can do to power on my hdd? A lot of important data I needed was inside. haizzz....
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a c 288 G Storage
September 18, 2013 4:01:13 AM

The Marvell MCU contains unique, drive specific "adaptive" data. These data would need to be transferred to your replacement PCB. It is highly unlikely, although not impossible, that a donor PCB will work without such a transfer.

If you have a multimeter, there are a few voltage test points that we could check. It may only be a post mortem exercise, though.
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September 18, 2013 5:02:38 AM

fzabkar said:
The Marvell MCU contains unique, drive specific "adaptive" data. These data would need to be transferred to your replacement PCB. It is highly unlikely, although not impossible, that a donor PCB will work without such a transfer.

If you have a multimeter, there are a few voltage test points that we could check. It may only be a post mortem exercise, though.


I have multimeter. Which points should I check?
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a c 288 G Storage
September 18, 2013 11:57:40 AM

Measure Q4 near the SATA power connector. That's the +3.3V Vio supply.

Measure the voltages at the inductors around the SMOOTH chip, and look for the -5V supply at J1.

Be careful not to slip with your probes, as severe danage may result.
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September 18, 2013 11:37:20 PM

fzabkar said:
Measure Q4 near the SATA power connector. That's the +3.3V Vio supply.

Measure the voltages at the inductors around the SMOOTH chip, and look for the -5V supply at J1.

Be careful not to slip with your probes, as severe danage may result.


Can you help to highlight the location for measurement point?
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a c 288 G Storage
September 18, 2013 11:49:58 PM

Upload a photo and I'll identify the test points.
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a c 288 G Storage
September 19, 2013 1:58:02 AM

Sorry, I've blocked a lot of "content" to make my forum experience bearable. That's why I missed your photo.

Anyway, here are your test points:
http://www.users.on.net/~fzabkar/HDD/2060-701444/

Use a screw hole or SATA ground as your 0V reference.
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September 19, 2013 6:16:29 AM

fzabkar said:
Sorry, I've blocked a lot of "content" to make my forum experience bearable. That's why I missed your photo.

Anyway, here are your test points:
http://www.users.on.net/~fzabkar/HDD/2060-701444/

Use a screw hole or SATA ground as your 0V reference.


These are the results I'm get:
J1:
+5V = 0.054V
-5V = 5.155V

D2 = 0.055V

Q4:
+3.3V = 0.182V
+5V = 5.157V

For the Vcore I cannot get any valid reading, multimeter reading ~0V.

Do you have any idea with the results? Or you need more data?
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a c 288 G Storage
September 19, 2013 12:10:46 PM

The SMOOTH chip generates the +3.3V, +1.2V, and -5V supplies. Therefore it would appear that this chip may be dead, or it may not be getting its +5V and +12V supplies. I can't do much more for you without having the PCB in front of me, and even then I may not be able to help.
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!