Samsung HD502HJ - demaged ROM finding donor PCB

[USER]

Hello!

I've got a 500GB Samsung HD502HJ with burned transil 6V8A,
(visually transil looks ok, but was shorted - tested by multimeter).
I have changed broken transil and tried to run HDD - nothing happened - no spin,
so I swapped ROM to donor PCB, also nothing happened.

In my opinion the ROM is dead.
Is there any possibility to find donor PCB with the same content of ROM?

[fzabkar]

Did you check the zero-ohm resistor on the original PCB?

http://www.users.on.net/~fzabkar/HDD/HD103SJ_TVS_2.jpg

Do you have any way of reading the ROM? Perhaps it was damaged during the transfer.

[USER]

zero - ohm resistor is OK - conducts.
ROM was transferred under temp. control on BGA rework station.
ROM from donor PCB was soldered back, donor drive is still alive.
I will try to read ROM in some programmer.

[fzabkar]

Does the donor PCB with donor ROM spin up the patient HDD?

Can you get a terminal log?

[USER]

Yes it does, patient HDD spin up with donor PCB + donor ROM.

[fzabkar]

How to connect a terminal cable on a Samsung drive:
http://www.alexsoft.org/viewtopic.php?f=116&t=189

[USER]

Problem solved
I found donor with compatible ROM - only PCB swap.

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