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
  [ 13 posts ] 
  Previous topic | Next topic 
Author Message
sempre
 Post subject: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 10:09 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
Hi to all!

HDD SAMSUNG SV2042H REVAA 2001.08 20 GB

FW. PK100-19

The HDD is not recognized for mhdd and makes sounds (tac, tac)DRDY ACCESS (ACTIVE) PCB Is GOOD, HEAD BAD?

HOW I CAN KNOW And DECIDE?
:vo:
THANKS ADVANCE!

_________________
Нет ничего невозможного
Top
 Profile  
 
PalmerData
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 12:11 
Offline
User avatar

Joined: December 11th, 2007, 9:16
Posts: 17
Probably the heads if there's no physical media damage, swap them and see.

If you haven't got parts, you can remove the heads and check the resistance of the MR stripe for each head using a good multimeter. It should be about 50-55 ohms for each head, if it's much high (60ohms +) then the head is dead.

The pins to measure are the pairs shown in the picture attached. (Sorry it's not the same model heads as that of your drive, it's just what I had to hand, and you get the idea.)

Good luck.


Attachments:
gmr_samsung.jpg
gmr_samsung.jpg [ 96.19 KiB | Viewed 7121 times ]

_________________
Timothy Ayers
Clean Room Engineer

http://www.palmerdata.com
Tel: +44 (0)20 7015 5380
Top
 Profile  
 
sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 13:21 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
Thanks for help Timothy!

My friends, these heads are compatible?


Attachments:
head bad.JPG
head bad.JPG [ 49.89 KiB | Viewed 7083 times ]
DONOR.JPG
DONOR.JPG [ 49.96 KiB | Viewed 7083 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
pcimage
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 13:25 
Offline

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

Cannot tell from your picture.

On the back edge of the drive there should be a small sticker with a 5-digit number (e.g. MFTRX).

You need to match digit 4 (i.e. 'R')

Hope it helps

Sean

_________________
PC Image Data Recovery
http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!
Top
 Profile  
 
sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 14:28 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
pcimage wrote:
Hi Sempre!

Cannot tell from your picture.

On the back edge of the drive there should be a small sticker with a 5-digit number (e.g. MFTRX).

You need to match digit 4 (i.e. 'R')

Hope it helps

Sean


I believe that it is on this label that spoke to me!

Thanks my friend!!
:vo:


Attachments:
samsung head.JPG
samsung head.JPG [ 51.44 KiB | Viewed 7079 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
beto
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 16:01 
Offline

Joined: October 21st, 2005, 0:45
Posts: 1517
Location: Mexico
U can check if its head problem or no, checking the log from terminal too

Best Regards.
Top
 Profile  
 
pepe
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 20:11 
Offline

Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
Hi,

Checkin head with multimeter can easily cause the good heads to die. U probably have to do some mods to the multimeter to do this.

pepe

_________________
Adatmentés - Data recovery
Top
 Profile  
 
PalmerData
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:21 
Offline
User avatar

Joined: December 11th, 2007, 9:16
Posts: 17
You're totally right Pepe, I had that problem using a so called 'professional' multimeter a few years ago. But when we started here, I splashed out and got a good Fluke multimeter and it's never caused a problem. Good equipment is always worth spending money on.

_________________
Timothy Ayers
Clean Room Engineer

http://www.palmerdata.com
Tel: +44 (0)20 7015 5380
Top
 Profile  
 
sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:37 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
beto wrote:
U can check if its head problem or no, checking the log from terminal too

Best Regards.


Thanks help beto!

the terminal that you spoke is this?
:vo:


Attachments:
terminal log.JPG
terminal log.JPG [ 9.51 KiB | Viewed 7966 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:40 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
PalmerData wrote:
You're totally right Pepe, I had that problem using a so called 'professional' multimeter a few years ago. But when we started here, I splashed out and got a good Fluke multimeter and it's never caused a problem. Good equipment is always worth spending money on.



Thanks for help!

Please, It can cite me a good multimeter for this type of test?
:idea:

_________________
Нет ничего невозможного
Top
 Profile  
 
sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:40 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 1060
pepe wrote:
Hi,

Checkin head with multimeter can easily cause the good heads to die. U probably have to do some mods to the multimeter to do this.

pepe


Thanks pepe!! :good: :good:

_________________
Нет ничего невозможного
Top
 Profile  
 
DRNJ
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: March 14th, 2008, 10:17 
Offline

Joined: November 19th, 2007, 0:23
Posts: 84
You need a NanoVolt, Micro-Ohm Meter. They cost about $4,000.
The 3 to 9 volts that most ohm meters use will burn out the input circuit of the preamp.
You can also build your own circuit to do this test.

Not sure if this will detect all types of head surface damage.
Top
 Profile  
 
pepe
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: March 15th, 2008, 6:36 
Offline

Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
this is what I was refering to :) do some mods to the multimeter...

pepe

_________________
Adatmentés - Data recovery
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 13 posts ] 

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: Google [Bot] and 49 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