I have a White 1563 sewing machine and it was working fine today, and when I got home from work, all of a sudden it is impossible to get any action from the wheel to the needle. I initially thought it might be a belt issue, but it winds the bobbin just fine. Any suggestions? I have never had to troubleshoot a sewing machine before. You can pressed as hard as the pedal goes, and still the wheel won't work the needle.