Report "My Bernina 1630 has issues where the screen goes black, the needle jumps back and forth, and the entire machine buzzes. Some days it will turn on and run a straight stitch, but other days it won't even turn on properly. If I try to run any stictch after the first screen, it goes back to the home screen and uses a straight stitch. At the repair shop it worked flawlessly, of course. At home, it will not work. Could it be the motherboard inside the machine?"