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miekenos
 Post subject: working out what component is what
PostPosted: August 7th, 2008, 4:47 
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Joined: August 6th, 2008, 6:22
Posts: 14
I'm just trying to work out what kind of component i sizzled on my PCB. can you get pcb maps or something?
Attachment:
File comment: its obvious to see
board.JPG
board.JPG [ 184.07 KiB | Viewed 11047 times ]


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N.C.
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 4:58 
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Joined: March 28th, 2008, 7:52
Posts: 1466
Location: Europe, Hungary
Hi,

This is a seagate drive, and you have one short TVS diode. :)

Regards,
Janos
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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 5:11 
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Joined: August 6th, 2008, 6:22
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so whats a TVS diode? and are these common?
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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 5:25 
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Joined: August 6th, 2008, 6:22
Posts: 14
it is a seagate barracuda 7200.9 so what size tvs should i be looking at and specs i should be after? Janus the man :)
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hddguy
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 5:30 
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Joined: November 9th, 2006, 15:15
Posts: 2984
The TVS is quite easily identified because it is a rather large black component with just 2 contacts to the PCB, and is clearly seen damaged in your picture. Many HDDs have TVS diodes, I often have Samsung HDDs with damaged TVS, but pretty much any Seagate PCB will have a suitable power diode you could use.

But without the correct tools, you may only end up making things worse!
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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 5:33 
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Joined: August 6th, 2008, 6:22
Posts: 14
im hooked up with the guy at work he has the tools however are these common like with sizes and power or are there an array of choices?
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hddguy
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 5:48 
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Joined: November 9th, 2006, 15:15
Posts: 2984
If you post here a picture of the PCB from your 40GB Seagate PCB I can tell you if there is a component on there that can be used.
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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 6:05 
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Joined: August 6th, 2008, 6:22
Posts: 14
ok too the left of the screw im guessing is wat ill need but if not how do i know the specs?
Attachment:
40gig board.JPG
40gig board.JPG [ 211.78 KiB | Viewed 11028 times ]


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ccc
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 6:16 
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Joined: January 9th, 2007, 11:12
Posts: 410
Location: Romania
In fact this is the one you need


Attachments:
Seagate.GIF
Seagate.GIF [ 248.3 KiB | Viewed 11020 times ]

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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 7th, 2008, 6:23 
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Joined: August 6th, 2008, 6:22
Posts: 14
that was the one i was thinking , im getting it sorted tomorrow so ill tell u how i went thanks bud
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miekenos
 Post subject: Re: working out what component is what
PostPosted: August 8th, 2008, 22:49 
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Joined: August 6th, 2008, 6:22
Posts: 14
ok tvs is replaced but no power up:( any help?
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jono-ats
 Post subject: Re: working out what component is what
PostPosted: August 8th, 2008, 23:12 
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Joined: June 8th, 2006, 19:44
Posts: 3144
Location: Atlanta, GA
The TVS has a polarity. If you put it in backwards it will fail.

Just remove it altogether and see if drive powers up. Makes sure you have a good power supply as noted.

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rameez
 Post subject: Re: working out what component is what
PostPosted: August 9th, 2008, 15:31 
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Joined: June 27th, 2006, 11:33
Posts: 2288
Location: In ur HDD !
if its reversed the supply will not start after u plug in the hdd . does this happen when u plug hdd .
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N.C.
 Post subject: Re: working out what component is what
PostPosted: August 9th, 2008, 17:22 
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Joined: March 28th, 2008, 7:52
Posts: 1466
Location: Europe, Hungary
rameez wrote:
if its reversed the supply will not start after u plug in the hdd . does this happen when u plug hdd .


If it is not a chinese product.... :mrgreen:

Janos
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