Hello,
Preamble: I am not an engineer but I am interested in keeping my treadmill working and out of the landfill if possible. I have been trying to find people with similar problems as mine and been reading lots of forums lately but not sure if they have the same problem or not. I usually end up on this site so I thought I try posting my problem to see if someone can point me in the right direction however I have very little knowledge of circuits.
Problem: I have a Smooth Fitness 6.17 treadmill that stops between 7 and 10 minutes (I set the speed at about 7km/hr for the duration) although the display says it is still running, no error codes on display or on control board. I have taken apart the motor (IMG_6376) and cleaned it up, brushes look fine to me and there is no thermal switch and therefore no 3rd wire. I have also disconnected the motor belt from the running belt so only the motor is running for that time and the same problem still happens. After the motor stops I connect the main leads up to a 12v cordless drill battery and it runs fine, however connecting the leads back to the control board it does not run. If I wait about 4 hours then the treadmill will start again but usually run for a shorter time, about 5 minutes. If I wait 24 hours then the treadmill starts again and runs for the usual time.
Analysis: Based on the behaviour, it sounds like the problem is somewhere in the control board as I have eliminated the running belt as the current problem. What I have read and understood it sounds like the semiconductor chips embedded in the heat plates (circled in red in the attached picture IMG_6366) are not functioning properly anymore. Also attached is a close up of those chips once I unscrewed them from the heat plates (IMG_6363). I am tempted to buy and replace them however I am not sure my analysis is even in the ballpark. There is also one more chip that is in the heat plate IMG_6364 but I'm sure what its role is. Also tested resistance on the bridge rectifier chip and it appears to be functioning normally (reads O/L on opposite pins). Also if it helps, attached is the another picture that shows the board ID IMG_6275, it doesn't appear to have any capability to display error codes either.
Also I realize that the problem on the control board was likely caused by the running belt not being lubricated and being too tight which added additional load to the motor and caused the problem I am experiencing now. So once I fix the current problem I will make sure the running belt is working properly too.
Preamble: I am not an engineer but I am interested in keeping my treadmill working and out of the landfill if possible. I have been trying to find people with similar problems as mine and been reading lots of forums lately but not sure if they have the same problem or not. I usually end up on this site so I thought I try posting my problem to see if someone can point me in the right direction however I have very little knowledge of circuits.
Problem: I have a Smooth Fitness 6.17 treadmill that stops between 7 and 10 minutes (I set the speed at about 7km/hr for the duration) although the display says it is still running, no error codes on display or on control board. I have taken apart the motor (IMG_6376) and cleaned it up, brushes look fine to me and there is no thermal switch and therefore no 3rd wire. I have also disconnected the motor belt from the running belt so only the motor is running for that time and the same problem still happens. After the motor stops I connect the main leads up to a 12v cordless drill battery and it runs fine, however connecting the leads back to the control board it does not run. If I wait about 4 hours then the treadmill will start again but usually run for a shorter time, about 5 minutes. If I wait 24 hours then the treadmill starts again and runs for the usual time.
Analysis: Based on the behaviour, it sounds like the problem is somewhere in the control board as I have eliminated the running belt as the current problem. What I have read and understood it sounds like the semiconductor chips embedded in the heat plates (circled in red in the attached picture IMG_6366) are not functioning properly anymore. Also attached is a close up of those chips once I unscrewed them from the heat plates (IMG_6363). I am tempted to buy and replace them however I am not sure my analysis is even in the ballpark. There is also one more chip that is in the heat plate IMG_6364 but I'm sure what its role is. Also tested resistance on the bridge rectifier chip and it appears to be functioning normally (reads O/L on opposite pins). Also if it helps, attached is the another picture that shows the board ID IMG_6275, it doesn't appear to have any capability to display error codes either.
Also I realize that the problem on the control board was likely caused by the running belt not being lubricated and being too tight which added additional load to the motor and caused the problem I am experiencing now. So once I fix the current problem I will make sure the running belt is working properly too.
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