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 Post subject: Western digital PCB fried
PostPosted: November 13th, 2021, 5:59 
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Joined: November 13th, 2021, 5:35
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Location: Saudi Arabia
Hi Guys,


The pcb is fried for one of the Raid drive. We have the replacement board, the question is will swap ROM will do the job. Should we get a ROM reader instead of swapping the rom, which is more safer and reliable way. Any help is most appreciated,

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Attachment:
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2.jpeg [ 163.91 KiB | Viewed 7290 times ]


Many Thanks


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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 8:09 
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Joined: November 7th, 2020, 5:31
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Location: The_UK
Given the level of damage there, you'll be lucky if it's just the PCB. It's always safer to make a copy of the rom, but moving them is normally a safe process for anyone with basic soldering skills. Guessing that's another victim of a modular power supply, what were the other drives in the set like ?

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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 8:41 
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Joined: November 13th, 2021, 5:35
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Other drives in the set are the same model drive, but do you think it can be more damage ? What we feel there was a short circuit on the board, because when we connected power cable melted a little.


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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 8:53 
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how can I copy the rom ?


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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 9:54 
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Joined: October 3rd, 2005, 0:40
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Location: Hungary
you can use an spi flash reader/programmer, but it needs to be able to adjust the supply voltage to 1.8V.

pepe

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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 13:52 
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Any suggestions/recommendations for SPI flash reader/programmer?


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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 14:40 
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Joined: May 30th, 2005, 17:07
Posts: 528
Hi,
In this disk ROM it is supplied with the voltage of 2.5V

Mikippp


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 Post subject: Re: Western digital PCB fried
PostPosted: November 13th, 2021, 19:28 
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Location: Hungary
yeah, indeed. Odd that other IO are 1.8V...
thx for the correction.
pepe

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 Post subject: Re: Western digital PCB fried
PostPosted: November 14th, 2021, 3:25 
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Given the state of the contact pads for the HSA I'd be very surprised if the preamp wasn't cooked too.

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 Post subject: Re: Western digital PCB fried
PostPosted: November 14th, 2021, 12:36 
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R67 is visibly damaged. This points to an overvoltage on the +5V supply. The motor controller is damaged on the 5V side as well. Therefore I believe that the preamp is most likely dead.

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 Post subject: Re: Western digital PCB fried
PostPosted: November 15th, 2021, 19:20 
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Quote:
Given the state of the contact pads for the HSA I'd be very surprised if the preamp wasn't cooked too.


That looks pretty normal, not a result of the OV.

pepe

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