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M041633n
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 15:37 
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Joined: January 16th, 2024, 6:53
Posts: 165
Location: Chennai
Done it but it didn't spin


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M041633n
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 15:43 
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Joined: January 16th, 2024, 6:53
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Location: Chennai
And not even detecting on Windows device manager but previously it was detecting
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fzabkar
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 15:56 
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Joined: September 8th, 2009, 18:21
Posts: 17094
Location: Australia
M041633n wrote:
And not even detecting on Windows device manager but previously it was detecting


This makes no sense. If the drive was not getting 5V and 12V, then the MCU would not have been alive, in which case the drive would not have been able to communicate.

Can you now measure the voltages at all those test points?

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unknown
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 16:21 
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Joined: October 21st, 2007, 8:48
Posts: 1721
M041633n wrote:
Yes Customer told it was fallen

Most likely heads are gone.
That's why the drive won't spin up.
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fzabkar
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 16:26 
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unknown wrote:
M041633n wrote:
Yes Customer told it was fallen

Most likely heads are gone.
That's why the drive won't spin up.

How does this account for the e-fuse being open on both sides? I don't think we're getting the real story.

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M041633n
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 16:51 
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Joined: January 16th, 2024, 6:53
Posts: 165
Location: Chennai
fzabkar wrote:
M041633n wrote:
And not even detecting on Windows device manager but previously it was detecting


This makes no sense. If the drive was not getting 5V and 12V, then the MCU would not have been alive, in which case the drive would not have been able to communicate.

Can you now measure the voltages at all those test points?


Powered or not powered ??
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Lardman
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 16:56 
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Joined: November 7th, 2020, 5:31
Posts: 1305
Location: United Kingdom
M041633n wrote:
fzabkar wrote:
Can you now measure the voltages at all those test points?
Powered or not powered ??
If this is a clients drive, don't you think it's time you sub contracted this one out to someone with a little more experience.

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fzabkar
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: February 15th, 2024, 16:59 
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Joined: September 8th, 2009, 18:21
Posts: 17094
Location: Australia
M041633n wrote:
fzabkar wrote:
M041633n wrote:
And not even detecting on Windows device manager but previously it was detecting


This makes no sense. If the drive was not getting 5V and 12V, then the MCU would not have been alive, in which case the drive would not have been able to communicate.

Can you now measure the voltages at all those test points?


Powered or not powered ??

Try it both ways and then try to understand why you get the results that you do.

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M041633n
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: June 25th, 2024, 7:29 
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Joined: January 16th, 2024, 6:53
Posts: 165
Location: Chennai
What if I replace the PCB with the Donor PCB will it work without any modifications??
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LostDataSa
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: June 28th, 2024, 20:49 
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Joined: December 23rd, 2013, 9:56
Posts: 202
Location: Saudi Arabia
I would try with a donor PCB first. to skip the headache of diagnosing PCB
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M041633n
 Post subject: Re: Wd40edaz-11u78b0 Not Spinning
PostPosted: June 29th, 2024, 9:16 
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Joined: January 16th, 2024, 6:53
Posts: 165
Location: Chennai
If I have the donor pcb what should I've to do next Mr.LostDataSa
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