Treadmill Circuit Board Blown

Discussion in 'The Projects Forum' started by mally, Feb 5, 2016.

  1. mally

    Thread Starter New Member

    Feb 4, 2016
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    Hello, am a newbie to this site and from the post's i've read it's the best place for me to get the help i need ..
    In short i got a treadmill to rip out the motor and circuit board so i can use the motor in my wood lathe as the motor i am using is a teeny tiny one (about 1/2 hp)
    As i have removed all the parts from the treadmill i noticed that a few components have blow up , they are so bad i don't know what there value are .
    The circuit came out of a V fit machine and one of the components is a resistor and the other (i think) was a ceramic capacitor, I have searched the internet for hours n hours but the closest i got was www.lulusoso.com they have a picture of the same circuit be as much as i tried to zoom in on the board i cannot still make out the components . My question is can anyone find out what i need or failing that i could just chuck it in the bin and try make one from scratch (with a lot of help from this site) I have shown pictures of my board with missing parts and the picture of the one i have tracked down on the web. Cheers for reading and for the record am only a novice with electric but eager to learn more.
    Mal
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Looks like a PWM controller, is there any model # on the board?
    Max.
     
  3. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    hiya on the back it say's
    6321
    3BC01110U12230
    Could that be the model number ?
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Doesn't sound like it.
    Max.
     
  5. ISB123

    Well-Known Member

    May 21, 2014
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    Resistor is 170Ω and blue cap is low value capacitor like 0.1uF.
     
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  6. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    If you let me know what it would possible start with it would help me to try find it ,as there is a few numbers / codes on the board cheer.
    Thank you ISB123 :D i will replace them and see what happens , is it possible that something else that's gone as well that's caused the resistor/ capacitor to blow ?? if there anything else i could check before i flick the switch after i replace them ?? here is some more pictures of the circuit board if you can see any model numbers or possible component's to check .
    Many thanks Mal
     
  7. ISB123

    Well-Known Member

    May 21, 2014
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    Thermistor could be blown too.You just have to test it to see.
     
  8. mally

    Thread Starter New Member

    Feb 4, 2016
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    Sorry am scratching my head .... where is the Thermistor ??
     
  9. ISB123

    Well-Known Member

    May 21, 2014
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    Blue thing next to ROHS sticker.
     
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  10. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    Oh cheers :confused: , i will check that out and sort the other parts out and see how it goes :rolleyes:. I will let you know what happens .
    After this small problem i have a bigger one to come mmmmmmmmm i hear you say :eek: lol Cheers again for your help .
    Mal
     
  11. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I would test those large semi's (Mosfets?)
    They could be a cause of the blow up.
    Max.
     
  12. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    Thank you i will check those too ...
    Mal
     
  13. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    Hiya guy's i been down to maplin to get these parts as ISB 123 had said , well after a big discussion about the parts they have supplied my with, i still think there are not the right one's :(. To me these are far too small , before i put them in could i get a second opinion please .
    I have posted pictures of the parts bought and also the resistor that actually blew up which i have put it next to it to show the size difference .
    Thank you
    Mal
     
  14. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    anyone out there ????????? o_O:D
     
  15. MaxHeadRoom

    Expert

    Jul 18, 2013
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    At this point try it, if it immediately overheats rapidly then there is most likely some other problem that is causing the over-current.
    Max.
     
  16. mally

    Thread Starter New Member

    Feb 4, 2016
    20
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    thank you max i will give it a go ..
    Mal
     
  17. mally

    Thread Starter New Member

    Feb 4, 2016
    20
    1
    Hello Max
    I have managed to track down the controller / model number for my circuit board it's "TM5942" i have not yet tried the new parts i bought just in case this new info can help you to identify the correct component's ..
    Cheers Mal
     
  18. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Nothing shows up, it appears the board has a custom microcontroller, very unusual for a T.M. board.
    If you try the resistor it is not much of a loss if it blows again, I would test those large semi's for short.
    Max.
     
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  19. Dodgydave

    Distinguished Member

    Jun 22, 2012
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  20. mally

    Thread Starter New Member

    Feb 4, 2016
    20
    1
    Thank you for the link . i think i know the one i need . The marking on mine is CNR 10d471k p5
    form the link you gave me i think this is the one i need to get to replace mine
    http://cpc.farnell.com/epcos/b72210...k&selectedCategoryId=&categoryId=700000011456
    cheers
    Mal
     
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