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sempre
 Post subject: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 10:09 
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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!

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PalmerData
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 12:11 
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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 7127 times ]

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sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 13:21 
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Thanks for help Timothy!

My friends, these heads are compatible?


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head bad.JPG
head bad.JPG [ 49.89 KiB | Viewed 7089 times ]
DONOR.JPG
DONOR.JPG [ 49.96 KiB | Viewed 7089 times ]

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pcimage
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 13:25 
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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

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sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 14:28 
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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:


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samsung head.JPG
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beto
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 16:01 
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U can check if its head problem or no, checking the log from terminal too

Best Regards.
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pepe
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 9th, 2008, 20:11 
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Joined: October 3rd, 2005, 0:40
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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

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PalmerData
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:21 
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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.

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sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:37 
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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:


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terminal log.JPG
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sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:40 
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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:

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sempre
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: January 10th, 2008, 5:40 
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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:

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DRNJ
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: March 14th, 2008, 10:17 
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Joined: November 19th, 2007, 0:23
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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.
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pepe
 Post subject: Re: HDD SAMSUNG SV2042H REVAA
PostPosted: March 15th, 2008, 6:36 
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this is what I was refering to :) do some mods to the multimeter...

pepe

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