i need help with my mc-60 kicking the breaker

Discussion in 'The Projects Forum' started by tumbleweed65, Jan 23, 2016.

  1. tumbleweed65

    Thread Starter New Member

    Jan 19, 2016
    4
    0
    I'm converting a treadmill motor to run my lathe it worked great on the bench,but after mounting it to the lathe it just trips the breaker as soon as i plug it in. I don't see anything burnt on my mc-60. after alot of research i'm at a loss. my board has a component that i don't see on any other boards and wondered if it was my issue any input of somewhere to start testing would be greatly appreciated. IMG_20160118_211806.jpg IMG_20160119_120951.jpg IMG_20160119_120951.jpg IMG_20160116_133818938.jpg IMG_20160116_182731601.jpg
     
  2. tumbleweed65

    Thread Starter New Member

    Jan 19, 2016
    4
    0
    Btw it trips the breaker even with nothing connected to the board,
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,542
    2,369
    Check Q2,Q3,D1 for short .
    Max.
     
  4. tumbleweed65

    Thread Starter New Member

    Jan 19, 2016
    4
    0
    Thanks Max Q3 is shorting out. I'm assuming you test from the 2 outside terminals. I'm also assuming that since that one is shorting it's the culprit. Is there a way to bypass that or do I need to replace it?
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,542
    2,369
    You have no choice but to replace it, it is best to test out of circuit, you should be able to get a replacement easily from DigiKey etc.
    You could power up out of circuit and check there is no other shorts.
    Max.
     
    tumbleweed65 likes this.
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,542
    2,369
  7. tumbleweed65

    Thread Starter New Member

    Jan 19, 2016
    4
    0
    Thanks, I looked at alot of threads on here and looked at a few hand drawn schematics but really didn't know what I was looking at... Lol. The one you linked was a bit closer to my level, I'm ordering that from digikey
     
Loading...