my mom has a 5 cd stereo (one with the circular player things) from probably the 90's. Today she tried to put a CD in, but the tray for the CDs wouldn't come all the way out. It only comes about halfway, and when you try to close it again it moves back and inch, and you try to open it, it moves forward an inch. the circular thing moves just fine, the tray itself doesn't. From what I can see it doesn't look like anything has jammed. Anyone know what's up/how it can be fixed?