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 Post subject: Samsung ST640LM000
PostPosted: June 21st, 2017, 20:11 
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Joined: May 19th, 2009, 21:43
Posts: 1
Location: California
Burnt PCB board
Will swapping a working board in cause any kind of data corruption?
https://drive.google.com/open?id=0BzJeewWhP0YqY0RsdTZrS1FRVjQ


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 Post subject: Re: Samsung ST640LM000
PostPosted: June 22nd, 2017, 3:28 
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Joined: October 3rd, 2005, 0:40
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Location: Hungary
If preamp is burnt you can damage the data, so it must be sorted out before pcb swap.

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 Post subject: Re: Samsung ST640LM000
PostPosted: June 22nd, 2017, 15:09 
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Joined: October 24th, 2014, 4:57
Posts: 219
Location: Remote Raid Help on planet Earth
Motor driver IC. In this case you can get burnt preampifier or heads on the platters.
HSA shield with contacts - check voltage pins, at least, before using donor PCB. If it has no short circuit with common point or have no a very small resistance bidirectionally - it is good sign.

Sorry, photo isn't the best.


Attachments:
IMG_20170622_170534_.jpg
IMG_20170622_170534_.jpg [ 33.05 KiB | Viewed 4811 times ]

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 Post subject: Re: Samsung ST640LM000
PostPosted: June 22nd, 2017, 18:37 
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Joined: September 8th, 2009, 18:21
Posts: 15440
Location: Australia
Martin wrote:
HSA shield with contacts - check voltage pins, at least, before using donor PCB.

Are you sure about your voltage test points? They seem like signal pins to me.

I would have guessed that the LC filters (?) would be in the supply paths.

http://ep.yimg.com/ay/yhst-14437584971410/hm641ji-hm641ji-s3m-rev-02-r00-c6493-g84a-aa6ag-rev-a-2-5-sata-samsung-pcb-fw-16.gif


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 Post subject: Re: Samsung ST640LM000
PostPosted: June 23rd, 2017, 9:41 
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Joined: October 24th, 2014, 4:57
Posts: 219
Location: Remote Raid Help on planet Earth
fzabkar wrote:
Martin wrote:
HSA shield with contacts - check voltage pins, at least, before using donor PCB.

Are you sure about your voltage test points? They seem like signal pins to me.


You are right, it's my fault, I'd put a picture for M8 family, but this is a M7E family.

Here is correct:


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