MultiDrive – free backup, clone & wipe disk utility from Atola Technology

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 
  Previous topic | Next topic 
Author Message
xose_maria
 Post subject: Missing component in HD pcb
PostPosted: March 18th, 2015, 15:13 
Offline
User avatar

Joined: November 10th, 2011, 9:36
Posts: 19
Location: A Coruña/Galicia/Spain
Hi!

I want to repair this board but this mosfet (circle) is missing. Pcb Maxtor DiamondMax 21 hard drive model STM3160215A

Thank you


Attachments:
20150318_200116.jpg
20150318_200116.jpg [ 1.41 MiB | Viewed 4913 times ]
Top
 Profile  
 
data-medics
 Post subject: Re: Missing component in HD pcb
PostPosted: March 18th, 2015, 16:42 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 2003
Location: Providence, RI
Looks like the motor controller is missing too. Why waste time fixing a PCB that is so cheap to buy on ebay?

_________________
Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company
Top
 Profile  
 
xose_maria
 Post subject: Re: Missing component in HD pcb
PostPosted: March 18th, 2015, 17:25 
Offline
User avatar

Joined: November 10th, 2011, 9:36
Posts: 19
Location: A Coruña/Galicia/Spain
I know. I want to solder mosfet and chip controller. I don't know the name of the mosfet.

Thank you.
Top
 Profile  
 
fzabkar
 Post subject: Re: Missing component in HD pcb
PostPosted: March 18th, 2015, 17:40 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia
I believe that an Si4833DY or equivalent should do the job. The MOSFET appears to be the chopper for the negative regulator for the preamp.

The following PCB appears to have a similar circuit in that area.

Seagate Barracuda 7200.10 ST3320620A hires PCB photos:
http://www.hddoracle.com/viewtopic.php? ... =111&p=129

Examples of Negative Switchmode Regulators:
http://www.hddoracle.com/viewtopic.php?f=59&t=231&p=596

_________________
A backup a day keeps DR away.
Top
 Profile  
 
xose_maria
 Post subject: Re: Missing component in HD pcb
PostPosted: March 18th, 2015, 19:55 
Offline
User avatar

Joined: November 10th, 2011, 9:36
Posts: 19
Location: A Coruña/Galicia/Spain
As always, very nice information.
Thanks! :-D
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 43 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Switch to mobile style
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group