If it's under warranty let them fix it or replace it.
MY Husq SE started sewing backwards so it's in the shop also. First thing they want you to do is buy an upgrade.
Mine is also 4 yrs old and he couldn't fix after 2 wks and my options were to replace it (upgrade) or fix it which will cost approx 710...circuit bd etc...Let's see upgrade to the compatible machine is a Diamond for 9999 or fix it for 710...GEE...brain teeser...No warranty since I got her via an "Open Stock Sale"...I told him to send her out for the fix. I'll get a 5 yr warranty on new parts.