Problems with creative 1469

Question

Apologies looking for faults on this site for a creative 1469 but ran out of options.As soon as the machine is switched on the needle shift to the far left and stay there.An a attemped is made to key in any functions the needle attemped to move to the center but jump right back to the left.The stepper motor situating on top was replaced once before, but the problem came right back after a few hours of work done. Is there something els I must look for?Thank youJas van Wyk