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Repair of a Maxtor External Storage Drive (ST3320620A)
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stam287
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Joined: 14 Jun 2009
Posts: 2

PostPosted: Sun Jun 14, 2009 6:25 pm    Post subject: Dead Hard drive due to wrong voltage Reply with quote

Hi,
thanks very much to everybody for the inputs. Well I used the wrong adapter for an external hard drive (higher voltage, was for a laptop) and then the hard drive completely stopped working (no noise at all). It is a Maxtor 500gb Hard drive (with Seagate inside). I opened it and I checked the power supply unit which works fine (checked with another hard drive). I also tried another working power supply unit, but of course that didn't work either.

I am trying to check which is the zener diode that has blown, there is something that looks that has melted, so that should be it. Any ideas on how to proceed?
Here are the pictures:
Circuit http://img199.imageshack.us/img199/9956/dsc0348x.jpg
External
http://img199.imageshack.us/img199/3566/dsc0349o.jpg

Thanks!! Smile
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stam287
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Joined: 14 Jun 2009
Posts: 2

PostPosted: Tue Jun 16, 2009 5:11 pm    Post subject: Reply with quote

Very Happy Very Happy
After removing the burnt out diode, I reconnected the hard drive and it worked again - Thanks again for everybody who helped! I will be more careful with power supply next time!
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Shebi
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Joined: 17 Mar 2007
Posts: 1

PostPosted: Mon Aug 31, 2009 5:30 pm    Post subject: Reply with quote

hmm learnt a lot from it ...
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Jonsin
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Joined: 23 Sep 2009
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PostPosted: Mon Sep 28, 2009 8:13 pm    Post subject: Reply with quote

bump!

just tried this and worked wonders!
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sunnydreamspace
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Joined: 04 Jan 2009
Posts: 540

PostPosted: Sun Oct 04, 2009 3:31 pm    Post subject: Reply with quote

nice explain....
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