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Sony Beta VCR Idler Problems

Discussion in 'Electronic Repair' started by Chris F., Mar 14, 2009.

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  1. Chris F.

    Chris F. Guest

    I recently bought a bunch of old Beta VCRs, hoping to fix them for resale.
    Most are Sony's, and the first one I put on the bench was an SL-2300. The
    problem is that it's eating tapes; the takeup reel will not turn during
    playback, but it works fine during fast forward or rewind. These units use a
    flat servo motor (similar to the capstan motor) for the tape drive, and it
    soon became obvious that the motor was the source of the problem -the
    flywheel was dragging against one of the windings during a certain point of
    each rotation. I tried swapping the tape drive unit with one from another
    SL-2300, only to discover it had the exact same problem. So I tried putting
    several plastic spacers underneath the flywheel, to raise it just enough to
    avoid scraping the windings underneath. It solved the dragging problem, but
    with the flywheel magnet further from the windings, the motor no longer has
    enough torque to turn the tape.
    Is there any way of increasing the speed/torque of this motor? This
    appears to be a common problem on these units and it would be great to
    figure out a viable way to repair them, since replacement is out of the
    Thanks for any advice.
  2. b

    b Guest

    chances are that these units have too many hours on them already, if
    this sort of problem has arisen. Thus it follows that the heads are
    probably also on the way out, or soon will be. I wouldn't waste much
    time on them.....
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