That part is a thermistor I believe. If you can solder put it back on and test the board.
Here is a pic of where it goes. I am not sure as I don't have an actual schematic of the board but that part should go high resistance if the motor sticks in a run position and shut down the voltage to it. Or at least that's what I presume it is there for.
If you have to head to a junk yard for one keep me in mind as mine is bad too. I think it is the 4019 and/or gate that reads the location info off the wheel on the TC motor then feeds the info to the microprocessor.
So if you find a couple of them cheap maybe I could get you to box one up and send it this way.