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David Farber David Farber is offline
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Default Super fast REW or FF on VCR, problem, Sharp VC MH711


"N_Cook" wrote in message
...
Will rewind 90 percent of a 4 hour tape in 40 seconds or so and 20s for
the
remainder.
What would allow the motor to run at full tilt ? clunking loudly to a
stop.
If it was not for the "crumple zone" of tape pulled into the gap between
tape roll and spool disc then the tape would have snapped at the end of
tape.
What to look for in the way of a problem ?
System presumably monitors ratio of supply and take up rotation rate and
direction of wind and unlaces tape from drum and over 3 stepped increases
,
sets at maximum revs until the ratio goes over a preset value and drops by
stages to a slow rate until end of tape sensor acts.


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



I'm not exactly sure what you're saying is the fault. Is it that the motor
is going too fast and/or it is making a clunking noise near the end of the
tape? Newer VCR's do bump up the rewind speed after several seconds to but I
think you know that already. Is the machine damaging the tape?

--
David Farber
David Farber's Service Center
L.A., CA