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My techko SH 3112Fa won't turn off

It keeps running even when empty and won't turn off unless I unplug it

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  • Anonymous Nov 11, 2007

    I cleaned the shredder and it still won't shut off...

  • savannah320 Nov 25, 2007

    I have tried and tried to clean out the shredder, but still am having no luck shutting it off. I appreciate your help and have changed the rating, but it really did not help. I knew what the probem was, but can't figure out how to fix it.
    Thanks anyway.

  • Anonymous Nov 30, 2007

    I, too, am having a problem with the shredder not turning off.  I took the cover off and cleaned the unit completely.  Still runs continuously.  Solution?

  • Anonymous Dec 05, 2007

    The plastic paper guide is broken.Therefore, the paper continues to wrap around the blades.

    Were can I obtain a new cover?

  • tpaskes Dec 17, 2007

    yes im having the same problem



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I had the same problem with my Shredded. In the centre of the paper feed slot is a little sensor that detects when you put paper in, it breaks some sort of light beam that is connected to the motor circuit.

Over time paper dust gathers on this sensor, covering it completely and fooling the machine to think that there is ALWAYS a piece of paper being fed into the shredder, the result being that the motor just runs continuously.

Clear the dust from this sensor and you'll fix this particular problem - a toothbrush worked great for me - don't use it to clean your teeth afterwards :-)


Posted on Jan 16, 2008

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If the machine has auto-detection, then the sensors in the paper throat are probably dirty with paper dust. With the sensors blocked, the machine thinks there is paper in the throat so it will continue to run.

Posted on Apr 17, 2009

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  • Master
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The paper feed unit must be cleaned of all paper pieces that have lodged inside. some pieces are making the paper detect switch send a false signal to motor.

Posted on Oct 12, 2007

  • 1 more comment 
  • Marty marty Nov 22, 2007

    hey savannah,
    why did you rate me as inappropriate? What's up with that? At the very least it should be "thanks for trying" CAN CHANGE IT to "thanks for trying", you ARE allowed to...I really am upset with this...

  • Marty marty Nov 22, 2007

    look, the switch is stuck, one way or must be UNSTUCKED!

  • Marty marty Nov 23, 2007

    hello...anyone there?


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