I have a Weco Trace II which had a drive motor go bad. It would reverse and then rotate as if something was jammed. I replaced motor and had one smooth rotation..tried to home and calibrate and the new motor would not work. All other functions seem to work if I rotate the table by hand..the trace will "home" but will not rotate. I called tech support and they said that the system board may have been damaged since I didn't use OEM parts. My questions is what part of the board sends "pulses" to the motor to have it rotate and can it be repaired?