With you machine being under warranty you may not want to open it up at all. It would be worth the $$ to send it to an authorized dealer . I have mailed out 2 different times Brother's machines to TX from my home in SE Michigan and had to pay the postage to get it there but not the postage for the return. Of course the repair did not cost anything. Call an authorized dealer explain the problem and do what it takes to get it fixed. It will be worth your time and $$. Don't void your warranty.