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  • Tape motor won't turn...

    ...clockwise, but will turn counter clockwise.
    Unfortunately it needs to run clockwise to move the tape.

    Got a Rexer RTE3000, similar to a Roland Space Echo supposedly.

    motor is getting proper -15 volts, but is not turning.

    I disconnected the wiring to it, reversed the polarity of the voltage and it turns just fine, in the other direction.

    You ever see a motor work in one direction, but not the other?

    I'm going to take it out, take it apart and see what I can do. And/or try and find a replacement.

    Thanks.

  • #2
    Originally posted by drewl View Post
    ...clockwise, but will turn counter clockwise.
    Unfortunately it needs to run clockwise to move the tape.

    Got a Rexer RTE3000, similar to a Roland Space Echo supposedly.

    motor is getting proper -15 volts, but is not turning.

    I disconnected the wiring to it, reversed the polarity of the voltage and it turns just fine, in the other direction.

    You ever see a motor work in one direction, but not the other?

    I'm going to take it out, take it apart and see what I can do. And/or try and find a replacement.

    Thanks.
    Some motors reversing polarity changes direction of travel.
    nosaj

    maybe this will offer some insight
    https://medium.com/luos/how-to-stop-...s-7afcbf3dbf1d
    Binkie McFartnuggets‏:If we really wanted to know the meaning of life we would have fed Stephen Hawking shrooms a long time ago.

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    • #3
      Originally posted by nosaj View Post
      Some motors reversing polarity changes direction of travel.
      nosaj

      maybe this will offer some insight
      https://medium.com/luos/how-to-stop-...s-7afcbf3dbf1d
      To follow up on this use a current limitied DC power supply and test the motor independantly.
      nosaj
      Binkie McFartnuggets‏:If we really wanted to know the meaning of life we would have fed Stephen Hawking shrooms a long time ago.

      Comment


      • #4
        Yes, I realize changing polarity of a DC motor changes direction.
        Current draw fine, it just won't rotate in the direction it's supposed to.
        The other way, fine.

        Weird.

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        • #5
          Originally posted by drewl View Post
          Yes, I realize changing polarity of a DC motor changes direction.
          Current draw fine, it just won't rotate in the direction it's supposed to.
          The other way, fine.

          Weird.
          Is that with an independant power source suppling the motor?

          nosaj
          Binkie McFartnuggets‏:If we really wanted to know the meaning of life we would have fed Stephen Hawking shrooms a long time ago.

          Comment


          • #6
            If the DC motor has a speed control built in, a lot did and do, if that fails there is a back EMF diode strapped across the control components.
            That is why it runs backwards and not forwards.
            Support for Fender, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk

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            • #7
              Originally posted by nosaj View Post
              Is that with an independant power source suppling the motor?

              nosaj

              Yes
              Using a power supply the motor will not spin with -15 v supplied to it as it gets from the unit.

              Switch polarity of power supply and it turns the opposite direction.

              The motor does have two other leads which go to a pot.

              Comment


              • #8
                Originally posted by drewl View Post
                Yes
                Using a power supply the motor will not spin with -15 v supplied to it as it gets from the unit.

                Switch polarity of power supply and it turns the opposite direction.

                The motor does have two other leads which go to a pot.
                The regulator, as I suggested earlier, has failed. Replace the motor or repair the regulator that is internal to the motor, if the pot wires come from the motor casing.
                What size is the shaft and does the spindle come off?
                Support for Fender, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk

                Comment


                • #9
                  Great, I'll see what I can do.
                  Thanks.

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