Horizon Treadmill - control board problem

Discussion in 'The Projects Forum' started by gregmurphy0, Dec 7, 2010.

  1. gregmurphy0

    Thread Starter New Member

    Oct 28, 2010
    6
    0
    I have a Horizon Quantum II treadmill which has a motor control board problem. The motor tested ok and the elevation motor is working. With the motor disconnected I am getting around 20v at the terminals, which I presume should be much higher. I have replaced the Power Diode and the SCR. The FET seems to be testing ok and the schoktty diodes are also testing ok. Can anybody help?
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,740
    759
    First off get a camera..
    snap some nice pics and show your work and problem
     
  3. gregmurphy0

    Thread Starter New Member

    Oct 28, 2010
    6
    0
    I found a 100k resistor which was reading about 180k. I replaced it but still not working. I then re-soldered the pins on the small IC U2. After I did this and turned on the machine, it worked and is still working. I presume there was a dry-joint at on of the pins of U2. Thanks to everyone for trying to help me. Hope this info helps somebody too.
     
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