3 head swap with 3 different donors, same results: no SA or DATA area access from H1.

if i put back heads on donor, all heads are perfectly working.
on patient are always working but only 3 heads/on 4.
always same head: #1 is not cloning
drive is not dropped
not bad noises

model: WD1600JD-00HBB0 (eagle)

out of reasonable ideas..

Did you try changing the PCB? Just had a case where we figured it would be heads. After the first PCB swap, the drive detected and read 4 of 6 heads 100%, 1 of 6 was partial and 1 of 6 was not at all. We were thinking we'd have to change the heads, but changed the PCB to another and voila! All but 1 sector read with all heads on.

Ironically enough, we also just finished a project where the tech thought it was a PCB issue and changed the PCB to find they could not read the data...it had lots of head issues that required multiple head changes.

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Luke
Recovery Force Data Recovery

@ lcoughey

i forgot to tell that this drive is started by smart hot swap, can't initialize by itself.
the same pcb, by hot swap, can read also from head 1 from the donors.
it's not pcb related for sure.

Diagnosis is quite simple: it's an Eagle drive
They can be very picky about heads

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

+1

totally agree with you here

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Kuwait Data Recovery - UNIX GTC
The only reason for time is so that everything doesn't happen at once. By: Albert Einstein

i made many eagles and always solved with many many heads swap and fight with customer to make understand overquote.
this one is really in good health, and i don't get the issue.