Hello,

Seagate drive ST3500413AS
FIRMWARE : JC4B
500 GB , Baracudda 7200.12

On Power on
1. PCB Test ok
2. model no & firmware & LBA shows garbage
ST_M13FOBL , ONR_BFW ,

any one now what could be the problem ?

SA cant read, ID you see comes from ROM. At this time there is not enough information to give you any sort of advice. What are the symptoms?

Serious electrical problem or simply ROM gone.

_________________
SAN, NAS, RAID, Server, and HDD Data Recovery.

If it is dead and this is how it ids , I usually see it on heavily/intentionally corrupted ROM or malfunctioning uP...

PM sent

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SAN, NAS, RAID, Server, and HDD Data Recovery.

Hello,

Seagate drive ST3500413AS
FIRMWARE : JC4B
500 GB , Baracudda 7200.12

On Power on
1. PCB Test ok
2. Motor Spins
3. Head Try to search , click 12 times
4. Spin Down
5. model no & firmware & LBA shows garbage
ST_M13FOBL , ONR_BFW ,

I have Same model Donor Drive with firmware JC4B .

Can I replace ROM of Donor on Patient PCB & try ???

In case of Seagate drives Can I re-generate ROM using PC3k ???






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I suspect your ROM is fine. Problem is elsewhere.

Note : had MY experience where the ROM was the culprit but it's not general.
NO YOU CAN'T 'REGENERATE' it with any commercial tool in any case.
So said, if cannot read check media/heads/read channel first, then look at ROM.

Hello,

I have a Donor hdd ,
tasks done :
1. Removed patient ROM , checked with Eprom Reader taken backup ,
Placed ROM on Donor working PCB & tried ,
2. Power on -> NO Terminal Access , Motor Spins & same error
Wrong ID , Firmware no & LBA .

Hello,

I checked patient ROM file , Open in binary mode , there is text of HDD Serial no , part no & firmware no.
So I assume that Patient ROM might be OK. PCB is also ok , there is no Head Crash noise , Motor Spins
& Search for SA (12 times ) then Spins Down .

DONOR hdd is exact Replica , same PCB & Firmware & model no. , part no.
What could be the problem ?

firmware, bad heads, deteriorated media, etc.

_________________
Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts