b wrote in message
...
On 12 dic, 20:48, "N_Cook" wrote:
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.

this is almost certainly something to do with the A/C head. I suspect
the deck reads the timecode pulses off the control track and stops or
slows down according to the tape position as deduced from this (many
vcr s have a 'goto' function which locates a point in time on the tape
you can enter in hours/ mins).

chances are, the tape in question may have had edge damage, or there
was dirt on the Ac head which messed up the signal.
B


Not played up since, perhaps 20 FF REW runs.
Including using a new tape so no timecoding. Perhaps just a spec of dust to
jump into an opto gap at the wrong moment is all that is needed.


--
Diverse Devices, Southampton, England
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