Seagate 2TB pcb swap

[adijay]

Hi there!

I'm writting to you in an effort of shedding some light to my problem, if there is any.

My seagate barracuda 2TB stoped spinning or giving any signs of life, after I connected it to a most probably faulty power supply. After I inspectioned the pcb and measured some voltages (or its abscence ) I tried to preform a pcb swap.

A friend who's as well skilled as I on electronics, as he was removing the original ROM from faulty pcb broke 2 pins (Vcc and Cs acording to IC datasheet).

Now, is there any way to recover this tiny IC in order to access my HDD? I tried (not very hard yet) to sand part of the IC trying to catch some metal I could solder the pins but no sucess yet.

Are there any other things you might suggest? Is there any way I could use the ROM from the new pcb (probably not)???

Its kinda urgent so I ask if there's anyone with some suggestion, please step forward. Thank you very much!

[digisupport]

Post a clear picture of the damaged ROM there may still be some chances to read the chip.
There are people on here who maybe can reconstruct a ROM for your drive, but you need to post some model details.

[drHDD]

cheapest way is to solder wires instead of broken legs.

[day1data]

Sanding it is way too harsh for a ROM chip i suggest you don't sand it any further.
Better to use a fiberglass pen to expose the pins as much as possible so you can then solder wires to them.

But your most likely not going to be able to get this ROM to work on a PCB again. You need to buy a ROM programmer and read it that way.

[adijay]

digisupport as you can see from the images attached, its a ST2000DM001, the ROM chip is a 25FS406 and the pcb is model 100717520 REV B. (both pcbs are).

The chip lost its legs straight away from desoldering drHDD, and there are no traces of metal part where I could try to solder some wire.

Hope some one can help me recover it. Thank you!

Attachments

ROM Chip

PCB Model

Disk Model

[adijay]

day1data I have a ROM programmer (a USB Whilelm GQ-4X) but nonetheless I need those to pins to make a copy of it.

I will try to buy the fiberglass pen then.

[pcimage]

Send the chip to digisupport.

I have first hand experience of his wizardry with "slaughtered" chips

[digisupport]

Send the chip to digisupport.

I have first hand experience of his wizardry with "slaughtered" chips

Thank you Sean

@adijay solder is not the best way to attach wires to that chip any more.
Use fiberglas pen under a microscope to expose the tiny bonding wires.
Fix the chip bottom up on veroboard / reader adapter.
connect thin wires to chip with Loctite circuit+ and read the chip.

Or send your chip to me - pm for info.

[adijay]

@digisupport thank you for your help. I will buy the pen and the loctite and will try to prefform that procedure. Will post any news as I proceed.

[adijay]

BTW I guess I have to buy the thinnest possible pen right?

[LarrySabo]

You can get conductive paint pens that have needle tips and work well for PCB repair. They have been used successfully to repair lifted traces/pads beneath BGA components: http://goo.gl/yp3PRQ