Our Horizon treadmill trips the internal circuit breaker as soon as elevation motor is actuated. It does not trip when run motor is actuated but it does not run. I have disconnected both motors one at a time and tried to get it to run. With the run motor disconnected I hit the start button and of course the belt did no run but the meters operated indicating that it was running. When I pressed the elevation change but it immediately tripped. When I disconnected the elevation motor and did the same test I had same result when I pressed the elevation change button. This seems to indicate that the problem is in the power circuit not the motors. Would this be correct.