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