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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Can anyone help? Question about Seagate HD

June 2nd, 2008, 13:54

I damaged one inductor on the PCB of Seagate ST3320620AS

The inductor is written as 3R3

I want to replace that SMD

But I am not sure that if I can use TDK VLCF5020T-3R3N1R6 to replace it

Here is the data sheet of TDK power inductor

http://www.tdk.de/company/inductors_coi ... cf5020.pdf

and here is the pix of my seagate harddisk pcb
The damaged part is inside the red circle

http://us.f6.yahoofs.com/hkblog/rZbsucqeBRmvtMy0i78iu44Dmg--_1/blog/20080531113638971.jpg.jpg?ib_____DWYHCLZiH

Any expert can help me out? Thanks

Re: Can anyone help? Question about Seagate HD

June 5th, 2008, 10:05

Most likely (99%) you can use it.

Re: Can anyone help? Question about Seagate HD

June 6th, 2008, 10:43

Thank you for your reply.
I will go get it.

Re: Can anyone help? Question about Seagate HD

June 6th, 2008, 14:32

lunchboxes wrote:I damaged one inductor on the PCB of Seagate ST3320620AS

The inductor is written as 3R3

I want to replace that SMD

But I am not sure that if I can use TDK VLCF5020T-3R3N1R6 to replace it

Here is the data sheet of TDK power inductor

http://www.tdk.de/company/inductors_coi ... cf5020.pdf

and here is the pix of my seagate harddisk pcb
The damaged part is inside the red circle

http://us.f6.yahoofs.com/hkblog/rZbsucqeBRmvtMy0i78iu44Dmg--_1/blog/20080531113638971.jpg.jpg?ib_____DWYHCLZiH

Any expert can help me out? Thanks



Hi ,
Try a Direct Shorting of The Same also ,It Will Not Spoil the PCB for Sure ,See If It works till Replacement Comes

Re: Can anyone help? Question about Seagate HD

June 6th, 2008, 17:48

Hi Amarbir,

These things are parts of DC-DC converters running at some hundred KHz. At this frequency these have some reasonable impedance that your short won't have -> it will overload the driving circuit.

pepe

Re: Can anyone help? Question about Seagate HD

June 7th, 2008, 0:44

pepe wrote:Hi Amarbir,

These things are parts of DC-DC converters running at some hundred KHz. At this frequency these have some reasonable impedance that your short won't have -> it will overload the driving circuit.

pepe


Pepe ,
True ......But What He Could Try Is a Inductor or the Same Value From Other Bad HDD's

Re: Can anyone help? Question about Seagate HD

June 7th, 2008, 3:06

Amarbir, they would have not fitted an inductor if could be shorted... It's part of the circuit. A smps with one or more coils short in the primary typically break the switching or trigger the protection (basic engineering of smps or dc-dc converter circuits!) sorry could not resist posting, despite I quit definitively dr and related stuff - at last! . Regards

Re: Can anyone help? Question about Seagate HD

June 10th, 2008, 14:47

BlackST wrote:Amarbir, they would have not fitted an inductor if could be shorted... It's part of the circuit. A smps with one or more coils short in the primary typically break the switching or trigger the protection (basic engineering of smps or dc-dc converter circuits!) sorry could not resist posting, despite I quit definitively dr and related stuff - at last! . Regards


True ,
Thats What i Said ,and Do Not Worry We Will Get You Back In DR BL :vo:
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