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Sorry for the delay and thank you for your patience. My name is Michael. I will be helping you with your question today. I am an Expert in the Exercise Equipment category. If you feel this is not the best category for your question, let me know and I will forward it to the appropriate group of Experts.
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Please try the incline controls and let me know if it does anything at all.
What you will need to do is test the motor controller board. The motor controller board should be controlling the incline motor when you use the controls. It does this by varying the voltage to the motor. To check it, you will have to open the base and check the voltage on the terminals coming into the incline motor - it should stay at a constant voltage if you are not moving the controls. If it doesn't, follow those wires back to the motor controller board. Here is a link to the replacement board: