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Sony TC-K590: capstan-motor always running when power is on?

Discussion in 'Electronic Repair' started by Robert Linden, Sep 9, 2007.

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  1. Hello!
    I got a Sony TC-K590-tape-deck. It seems to work ok, only one thing is
    strange. The capstan-motor is running as soon as the deck is powered on.
    Even without tape, door open/close doesn't matter. No "need" to press play for
    it to start running.
    First I thought it might be similar to this problem:
    http://sci.tech-archive.net/Archive/sci.electronics.repair/2006-11/msg00903.html
    But here there was action even when it was powered down. Also my backlight
    is dark/normal. And the faulty resistor mentioned is not the same value in the
    K590 as in Alans K620, so they might not be that similar.
    I got the thing used and in this state, so I don't know if it always did this.
    Does anybody have an idea what might be wrong, or even how to fix it? Or is
    this maybe even normal? I've never seen that on another tape and it doesn't
    seem to be a healthy behaviour.
    Thanks a lot for any hints.
    All the best,
    rob
     
  2. Meat Plow

    Meat Plow Guest

    I've a Teac that the capstan powers up with the on switch so that part is
    not abnormal for some decks, especially higher end units. Can't comment on
    the other problems you perceive.
     
  3. I can't think of any good tape recorder I've owned that _didn't_ run the
    capstan motor all the time. It simply makes sense.
     
  4. Oh. My other non-crappy recorder (onkyo ta-2550) doesn't do it. Thanks for the
    info (also to Meat Plow). Care to explain why that makes sense? The downsides
    are that it wastes power and make (soft, but anyway) noises. What is it good for?

    Thanks & all the best,
    rob
     
  5. good for?


    The power waste is minimal, because people don't usually leave their tape
    decks turned on without playing or recording.

    The practical advantage is that the capstan is "guaranteed" to be running at
    the right speed when the tape starts moving. That's something you'd expect
    from a "professional" (or "good amateur") tape deck.
     

  6. The capstan motor usually has a fan blade to cool the deck.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  7. JANA

    JANA Guest

    If I remember correctly, the capstan runs all the time in your model type.
    Many types of tape decks run this way.

    --

    JANA
    _____


    Hello!
    I got a Sony TC-K590-tape-deck. It seems to work ok, only one thing is
    strange. The capstan-motor is running as soon as the deck is powered on.
    Even without tape, door open/close doesn't matter. No "need" to press play
    for
    it to start running.
    First I thought it might be similar to this problem:
    http://sci.tech-archive.net/Archive/sci.electronics.repair/2006-11/msg00903.html
    But here there was action even when it was powered down. Also my backlight
    is dark/normal. And the faulty resistor mentioned is not the same value in
    the
    K590 as in Alans K620, so they might not be that similar.
    I got the thing used and in this state, so I don't know if it always did
    this.
    Does anybody have an idea what might be wrong, or even how to fix it? Or is
    this maybe even normal? I've never seen that on another tape and it doesn't
    seem to be a healthy behaviour.
    Thanks a lot for any hints.
    All the best,
    rob
     
  8. googlebot

    googlebot

    2
    0
    Oct 11, 2009
    Makes sense for the companies that sell motors,your answer makes as much sense
    as leaving your car running all the time.

    A lot of decks run all the time,your Sony included.Do NOT leave it on when not using it
    unless you are fond of replacing motors.
     
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