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maxmartin

Post subject: diamondmax 21

Posted: January 10th, 2015, 5:41

Joined: May 18th, 2009, 5:44
Posts: 12
Location: italy

inverted polarity on stm3320820a smoke on pwm diode is there someone in italy that can change diodes?
the hdd is stm3320820a fw:3AAE P.N:9DP03G-326 TK DATA CODE 7276
I have 2 other hdd fw:3AAE P.N:9DP03G-326 TK DATA CODE 8397
3AAE P.N:9DP03G-326 TK DATA CODE 7383

can I change the pcb? Or, if not, is there in italy someone that in case can swap also the firmware chip?

Incredible that no one here is capable to change a pwm diode.And i have a spinal cord injury so my hands are not able to do.

Any help is very appreciate.

Max

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maxmartin

Post subject: Re: diamondmax 21

Posted: January 10th, 2015, 17:02

Joined: May 18th, 2009, 5:44
Posts: 12
Location: italy

Thanks for reply.I'll post you photos asap.
The diode of 5v is short in diode mode measure.It was an external drive.
Really thanks.
Max

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maxmartin

Post subject: Re: diamondmax 21

Posted: January 11th, 2015, 13:54

Joined: May 18th, 2009, 5:44
Posts: 12
Location: italy

I made some measurements.

In test diode 5v and ground are in conduction on + of diode.

test pins of diode and it's in conduction.

Can I try what you suggest?

You're very gentle, thanks.

Max

Attachments:

burneddiode.jpg [ 136.67 KiB | Viewed 12732 times ]

WP_2.jpg [ 534.43 KiB | Viewed 12732 times ]

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ShaneWard

Post subject: Re: diamondmax 21

Posted: January 11th, 2015, 15:40

Joined: July 2nd, 2011, 14:16
Posts: 463
Location: England

umm, I wonder where the memory chip is, on the other side?

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fzabkar

Post subject: Re: diamondmax 21

Posted: January 11th, 2015, 16:10

Joined: September 8th, 2009, 18:21
Posts: 16960
Location: Australia

ShaneWard wrote:

umm, I wonder where the memory chip is, on the other side?

It must be embedded within the MCU.

http://cdn.shopify.com/s/files/1/0255/4 ... 1404739105
http://cdn.shopify.com/s/files/1/0255/4 ... 1404739105

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maxmartin

Post subject: Re: diamondmax 21

Posted: January 14th, 2015, 17:36

Joined: May 18th, 2009, 5:44
Posts: 12
Location: italy

I want to say thanks ,really thanks to everyone in this forum and a big thanks to Spildit and fzabkar.
They help me solving my problem and , really, they share their knowledge with us.

I resolve removing diode.

I'm very happy because i can't walk so my pc is my life, my little manner to communicate with other people.

Max

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pcimage

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 2:45

Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK

maxmartin wrote:

Try "labservice" in Padova.

http://www.labservice.org

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michael chiklis

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 7:18

Joined: December 5th, 2011, 5:38
Posts: 1740
Location: Verona, Italy

Bene che tutto si sia risolto.

Come ha detto Spildit, fai un backup clonando i dati su un altro hdd perchè se dovesse accadere un altro problema elettrico il tuo hdd quasi certamente si danneggerebbe molto seriamente, in quanto non avendo più la protezione del diodo TVS potrebbe bruciarsi il pre-amp del gruppo testine.

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pcimage

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 14:17

Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK

Spildit wrote:

pcimage wrote:

maxmartin wrote:

Try "labservice" in Padova.

http://www.labservice.org

Nice advert.
I was under the impression the op had already solved the problem with the drive...

It wasn't meant to be an advert, I just didn't read the thread properly and was just trying to point the guy in the right direction :oops:

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pcimage

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 15:15

Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK

Spildit wrote:

Without wanting to be rude, why would the "right direction" be :

pcimage wrote:

Try "labservice" in Padova.

http://www.labservice.org

When on the first reply of this thread (2nd post) I've stated :

Spildit wrote:

3 - If you want to ship the PCB to Portugal I can remove the diode and put there another one for a small fee + shipping costs. This will protect the PCB from power surges from the PSU and other issues like the one described.

Interesting.

Why are you being so defensive?

I only read the first post, it was early in the morning (06:45 uk time) and stupidly just replied to that.

I have no financial or other interest in recommending labservice, just that I do know him and he's in Italy.

I'm glad for the OP he's got his data back thanks to your and fzabkar's help at no cost.

Sometimes I wonder why I bother posting on here, just to be nit-picked :-(

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michael chiklis

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 15:35

Joined: December 5th, 2011, 5:38
Posts: 1740
Location: Verona, Italy

@pcimage: I live 90 Km from Padova (about 55 miles).
Do you know if labservice guy is subscripted in this forum?

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pcimage

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 15:45

Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK

Spildit wrote:

Sorry if i offended you.
It's just that i keep being picked all the time by data recovery professionals as well, even when I post safe DIY solutions the "commercial" professional (and more expensive) option apparently always came first.

Once again I'm very sorry, I shouldn't had replied to you the way I did, it's just that I'm a little unhappy with some other member of the forum and ended up a little bit aggressive and offensive.

Best regards and please accept my apologies.

No problem. All friends again :-)

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New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

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pcimage

Post subject: Re: diamondmax 21

Posted: January 15th, 2015, 15:46

Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK

michael chiklis wrote:

@pcimage: I live 90 Km from Padova (about 55 miles).
Do you know if labservice guy is subscripted in this forum?

I think so, but a rare visitor I believe,

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New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

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