In article ,
M.Joshi wrote:

N Cook Wrote:
or not in this case.
A bane of repair - the disappearing symptom.
Owner away till new year, Technics RS CH700 ribbon connected
"separate".
Owner stopped using tapes because of squeel, on prompting he said on
all
tapes and even on door opening but I forgot to ask whether one or other
or
both tape drives.
Whatever I do I cannot induce a squeel.
Other than loose or tight capstan spindle what else could give a very
loud
and
annoying audible squeel - he also confirmed it was mechanical and not
coming from speakers. Squeel on door opening suggests not pinch wheel
problems.
Dusting of talcum powder on rubber bands and return to owner? all
rubber
bands seem good and right sort of tension.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


I have a full-size separates Technics double tape deck and heard a
squeel when playing a tape. I thought it may have been one of the
rollers however, I believe it was the tape that was making the
squeeling noise!

It can indeed be the tape, caused by stiction with the head or other
non-rotating parts. Try touching the tape in various places with your
finger; if you find a place that makes it stop, substitute a felt pad
that lightly touches the tape.

At the professional level, tape machines used to sometimes include a
"scrape flutter filter" -- a freely rotating spindle touching the tape
-- to prevent similar problems. Even when you can't hear scrape flutter
directly, it can add modulation noise to the signal being recorded.

Isaac