There is a hole in the PCB on the bottom of the drive
right below the
casette motor. You can see a Phillips screw through this hole. You can
put a screw driver into it and manually rewind the tape with it. (At
least this was so on a TK50 I had to do this.) --
'tis the same on the TK70 tape drive, I've manually rewound the tape
& got it out of the drive now.
thanks,
greg