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Russwinters
 Post subject: Seagate CF drives
PostPosted: October 10th, 2008, 13:32 
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Location: Long Beach, California
Anyone have any experience with these? Common problems, success rate, etc. I just received one, and it doesn't seem to be drawing any power on my oscilloscope, (~3-4ma on the 5v). I can't detect and noise or vibrations coming from the drive; and obviously it does not identify, or initialize. It looks like it may be PCB.


Model: ST650211CF
P/N: 9AF212-235
FW: 3.04
Date: 05341
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mediaman
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 13:48 
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Joined: September 11th, 2007, 13:35
Posts: 249
no noise at all? first check the power input circuits and protections
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N.C.
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 14:20 
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Joined: March 28th, 2008, 7:52
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Location: Europe, Hungary
Usually, the protection is before anything.

If fuse is blown, the unit can't get 3-4 mA.

This is only opinion. :)

Regards,
Janos
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Amarbir[CDR-Labs]
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 15:14 
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Joined: August 15th, 2006, 3:01
Posts: 3522
Location: CDRLabs @ Chandigarh [ India ]
Russwinters wrote:
Anyone have any experience with these? Common problems, success rate, etc. I just received one, and it doesn't seem to be drawing any power on my oscilloscope, (~3-4ma on the 5v). I can't detect and noise or vibrations coming from the drive; and obviously it does not identify, or initialize. It looks like it may be PCB.


Model: ST650211CF
P/N: 9AF212-235
FW: 3.04
Date: 05341


Pardon Me ,
How Are You Passing current Via a Scope ?

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com
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Russwinters
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 15:49 
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Posts: 489
Location: Long Beach, California
I have a beta unit of Atola insight; which has a built in oscilloscope
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N.C.
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 15:51 
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Anyway, it is done with measuring only one good value resistor, connected serially with the unit. ;)

Janos
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BlackST
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 16:00 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
Atola's "oscilloscope" is not an oscilloscope, is a graph of a current monitor readout. For oscilloscope I mean , just to say, a Philips PM3217 or a Tektronix or HP...
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Amarbir[CDR-Labs]
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 16:20 
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Location: CDRLabs @ Chandigarh [ India ]
N.C. wrote:
Anyway, it is done with measuring only one good value resistor, connected serially with the unit. ;)

Janos


Pardon Me ,
I Ask the Same question again How ?

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com
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BlackST
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 16:24 
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Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)
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mediaman
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 16:35 
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Joined: September 11th, 2007, 13:35
Posts: 249
i think the 3 to 4 mA on the atola is parasitic noise. check the circuit protections (diodes, ferrites, TVS) just to be sure
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N.C.
 Post subject: Re: Seagate CF drives
PostPosted: October 10th, 2008, 17:16 
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BlackST wrote:
Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)



Amarbir, this is the correct answer. :)

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad. :)

Janos
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Amarbir[CDR-Labs]
 Post subject: Re: Seagate CF drives
PostPosted: October 11th, 2008, 14:49 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
N.C. wrote:
BlackST wrote:
Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)



Amarbir, this is the correct answer. :)

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad. :)

Janos


Janos ,
Measure Milli volts But Current ?

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Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com
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N.C.
 Post subject: Re: Seagate CF drives
PostPosted: October 11th, 2008, 15:35 
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Joined: March 28th, 2008, 7:52
Posts: 1466
Location: Europe, Hungary
Amarbir wrote:
N.C. wrote:
BlackST wrote:
Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)



Amarbir, this is the correct answer. :)

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad. :)

Janos


Janos ,
Measure Milli volts But Current ?


The scope can measure mV, of course.
But you can measure Current with it, if u use one resistor as well. R = U/I ( if i remember right. :lol: )

Janos
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