Welcome to the forum. Stick just posted a trouble shooting chart a few days ago for someone else. You can track down a member's post by clicking on his user name, clicking on personal profile, find Statistics on a menu bar and clicking on it, then choose posts by that member. It was only a few days ago so it would be in the first page or 3 since Stick is a prolific poster on this forum.
If it's something simple, repair it. It it's not then replace it.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.