Hi all.
Long time, no post.
I've got a customers old PATA IDE hard disk.
Its a Seagate ST317221A (U8)
The PCB is SG22580-300 Rev A.
The drive doesn't power on.
Checking the drive, the Infineon controller chip has a scorch mark on the top of it.
The chip rapidly gets hot when power is briefly applied.
The chip is labelled:
SAB M3005-8D
40F ATLANTIS
SG70021-501
FRANCE BA/10
SIEMENS' 98
EC025084
I replaced the PCB with another SG22580-300 Rev A
The only difference in the chips is the new PCB, the last line is EC020018.
With the new PCB, the drive does not power on either.
No components get hot on this board.
Would this indicate a problem with the motor and/or heads?
Assuming I can get the drive to spin up, do I have to tranfer any ROM chips between boards like most later boards required.
If so, there does not appear to be any standard BIOS chip - no 8 pin chip anywhere.
I guess it may be integrated into the controller?
Or could it be either the 14 pin chip labelled ST 8008 324 PHIL, which I cannot find any info on?
Or the 16 pin chip labelled HC4050 D01SG n00SB, which looks like it may be a buffer chip?
Any help or advice greatly appreciated.
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