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 Post subject: The ROM of a PCB immersed in water for days can it be used?
PostPosted: January 31st, 2019, 7:47 
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Joined: November 5th, 2018, 8:10
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Location: London
Let's suppose that a hard disk has been immersed in water for 2-3 days (water from home, not river or sea) and we are going to swap platters with a hard disk donor.

In case the ROM needs to be the same, that ROM could be worth to be transplanted to new PCB, or the water has already finished with it? In that case....GAME OVER ?


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 Post subject: Re: The ROM of a PBC immersed in water for days can it be us
PostPosted: January 31st, 2019, 7:51 
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Joined: September 16th, 2015, 9:06
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Location: Poland
Chances are 0-100%. What else can you expect over the Internet? Remove it, clean it and read it.
I would worry about the platters more than ROM.

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 Post subject: Re: The ROM of a PBC immersed in water for days can it be us
PostPosted: January 31st, 2019, 8:22 
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Joined: November 5th, 2018, 8:10
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melvin wrote:
Chances are 0-100%. What else can you expect over the Internet? Remove it, clean it and read it.
I would worry about the platters more than ROM.


It's just a guess, it's to know if besides the platters you have to worry about the ROM, since being unique for this drive (in many cases) if it does not work, I understand that there is nothing to do.


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 Post subject: Re: The ROM of a PCB immersed in water for days can it be us
PostPosted: January 31st, 2019, 8:53 
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If it's Toshiba or Seagate and the ROM is dead i think it's over. But i doubt that it would be dead in two days.

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 Post subject: Re: The ROM of a PCB immersed in water for days can it be us
PostPosted: January 31st, 2019, 10:24 
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Joined: April 3rd, 2011, 0:19
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ROM chips are pretty hardy. I don't think it'd be an issue unless it has been underwater so long the legs have corroded off.

Also, before I'd resort to considering platter swap I'd give it a chance and see if the motor still works. If it does you might avoid unnecessary calibration issues. But, cleaning it will be fun if water gets inside. Especially if it's salt water.

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 Post subject: Re: The ROM of a PCB immersed in water for days can it be us
PostPosted: February 1st, 2019, 5:33 
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Thanks :)


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 Post subject: Re: The ROM of a PCB immersed in water for days can it be us
PostPosted: February 3rd, 2019, 10:26 
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Joined: December 19th, 2006, 8:49
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As already stated i would be worried way more with the platters rather than with the ROM chip. Remove the chip (carefully) and read it with an external programmer that do support your chip. Most likely you will be ok.

Not to say that the same chip would survive years inside water but some days might not be a big issue ...

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