Treadmill T-1700 fuse Blowing

Discussion in 'General Electronics Chat' started by Mah-Ros, Dec 30, 2013.

  1. Mah-Ros

    Thread Starter New Member

    Nov 27, 2013
    My Treadmill Model T-1700, fuse blowing immediately connected to power !! i Changed Fuse and check all parts as Diod pole and other Motor Driver supply part without 2 parts as transistor ! because seller erase item number of those two parts so could you help me to which which items are as SCR/Rectifier/IGBT/Mosfet .... ?

    may those parts fault can happen for Fuse Blowing ?

  2. MaxHeadRoom


    Jul 18, 2013
    If you have two heat sinked semi's then the drive could be probably PWM control and the two semi's would normally be Hexfets.
    The other type used is a bridge with two rectifiers and two SCR's with a total of four heat sinked semi's.
    Either way, the H.S. semi's are the likely candidates, remove them and check for shorts.
    The evidence of a large electrolytic Cap and bridge rectifiers point to PWM, test the four power rectifiers in the bridge on the board (top centre).
    Mah-Ros likes this.