On Sun, 17 Oct 1999 17:17:28 +0200, Tibor Mocsar wrote:
> After I had survived two headcrashes my third HD died again. Upon switching
> on the computer the engine of the HD does not want to start. Other
> ....
> I consulted about a dozen socalled "PC-Technicians" but this was wasted
> time. None of them had the slightest idea about electronics of a harddrive.
> All they can do is "click-click".
>
Here's an idea that may just possibly help you - it's worked
for me before now.
It's unlikely that the motor itself has failed - much more
likely that the electronics driving it has failed. If you can
find an identical (working) HD, but possibly with bad sectors on
the platters, you can swap over the boards between drives. Since
you only want the electronics from the 'donor' HD, bad sectors
aren't going to matter. Since the electronics board is outside
the sealed area of the drive, special atmospheres, etc., aren't
relevant to this trick.
If you can't find the right 'donor' HD, then if you're handy
with an oscilloscope probe, poke around near any devices that
look like they're power devices. It's USUALLY this end of the
electronics that dies. Also check for any wirewound resistors or
chokes in the circuit to the HD motor - they can go
open-circuit.
Finally - another time I had a failed HD, I found that it would come
back to life again if I laid it on the top of the PC chassis with the
bench light trained on its board (not TOO close!) for a while. It worked
long enough like this to rescue the data.
As for the "so-called technicians" - yes, you've absolutely
got that one right !!! NO practical application at all....
Here's hoping you get it to work again,
Ron.
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