Approximately how old is your Sportcraft TX390?
Does the display appear normal, or is there anything unusual on it?
Do you have a voltmeter available to carry out some tests on the motor and control board, or are you looking for a repairer in your area?
What checks did you carry out? Did you test for voltage? What voltage results are you getting at the motor, and at the control board?
Ok if it is not running then there is a fault with either the motor control board or the motor itself, depending on whether it is getting voltage or not.
If voltage to the motor is good but it is not running then the motor will need to be replaced.