Hi there,

I just removed a 4200.2 from a laptop that does not spin up.
A very faint clicking can be heard. No stiction, no seizure.
Tomorrow I'll try to get a terminal dump and then look ebay for a replacement PCB.

Any other things I should try? How interchangeable are the PCBs for this series, what parameters must match?

regards

It does not power, and there is no stiction or seizure but you hear a faint clicking?

Does not make a lot of sense. You need to give this a proper diagnostic.

Or better yet, send to someone experienced to do it for you.

After replacing the Smooth chip, which motor outputs were almost zero while the chip got quite hot, the drive now spins up, but unfortunately tells me some new problem.
Find the terminal log attached - I've once seen this problem on a 7200.x drive, but not for a Mercury.

Interface task reset
4096k x 16 buffer detected
MERCURY - 1_Disk 3.01 11-
Buzz - 30-04 15:16
Head Mask FFFF - Switch to full int.
Spin Ready
3.01 11-30-04 15:21
(P)PATA Reset
Ought= 0 Need=0
Failed sys sect. write

Read Ver Retrys

Read Ver Retrys

Read Ver Retrys

Read Ver Retrys

Read Ver Failure!
Failed sys sect. write
Restore
Master
AT Er 00 Nwt Er 33 RdWr ffffffff.00.0134
ATA St 50 Er 01 Op 00 0,0000/0/00,00 01 00
Niwot: ffefffff b8 ffefffff.f.ffb ffff ffff ffff ffff

CE Log EC=33 Rtype=0 OV=0 STStatus0

Could be platter or head damage.

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