Hi,
I have a Horizon T-20 treadmill, it powers up but the motor has stopped turning. This had happened to me a couple of years ago and I found D6 to be shorted, i replaced it and that fixed the problem but I noticed the that diode was running hot, so I mounted the diode on the frame of the treadmill to act as a big heatsink, that worked for over a year with no problems. Recently D6 was shorted again and the motor was not turning, I replaced D6 again and that did not fix the problem, I checked Q5, IRFP250, its not shorted, I also checked Q2, FET, that reads around 40 ohms, I suspect that is shorted, also checked all the diodes, resistors and transistors they all read good. What I like to know if any one has some input on this controller board as to the direction I should be going or has a schematic that I may borrow. I have read all the threads pertaining to Horizon treadmills but his one has me pulling my hairs, the few that I have.
I have a Horizon T-20 treadmill, it powers up but the motor has stopped turning. This had happened to me a couple of years ago and I found D6 to be shorted, i replaced it and that fixed the problem but I noticed the that diode was running hot, so I mounted the diode on the frame of the treadmill to act as a big heatsink, that worked for over a year with no problems. Recently D6 was shorted again and the motor was not turning, I replaced D6 again and that did not fix the problem, I checked Q5, IRFP250, its not shorted, I also checked Q2, FET, that reads around 40 ohms, I suspect that is shorted, also checked all the diodes, resistors and transistors they all read good. What I like to know if any one has some input on this controller board as to the direction I should be going or has a schematic that I may borrow. I have read all the threads pertaining to Horizon treadmills but his one has me pulling my hairs, the few that I have.
