High pitched squeal/whine/warble
Clarence Dold
dold at mitisft.Convergent.COM
Sat Apr 15 02:25:55 AEST 1989
in article <9197 at alice.UUCP:, wilber at alice.UUCP (Bob Wilber) says:
: }I bought my 3B1 (2M/40M 3.51) 3rd hand about 3 months ago. When I first got
: }it, it would whine occasionally, with about a 2 minute quiet period in
: This is a common problem, caused by the anti-static tab in the disk getting
: worn by the rotating spindle.
: To fix:
: Open up your 3b1 (the hard part :-( ), take out the disk drive, and remove the
: PC board at the bottom of the disk drive. (Be sure to note how the connectors
: go so you'll be able to reassemble it properly.) On the other side of the PC
: board you will see the copper anti-static tab. Bend it down, away from the
: disk spindle, and reassemble.
: No harm seems to come from having the anti-static tab not quite touch the
: spindle.
Certainly, the drive will run without the spindle ground, in fact,
some drives don't even have them anymore.
It would be better to bend the tab TOWARD the drive. The increase in pressure
will stop the chatter that you had been hearing.
--
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Clarence A Dold - dold at tsmiti.Convergent.COM (408) 434-5293
...pyramid!ctnews!tsmiti!dold
P.O.Box 6685, San Jose, CA 95150-6685 MS#10-007
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