I have an old DVD/CD player that I’m trying to get to work. When I put a CD or DVD in it says loading for a long time then ejects the disk. Sometimes I hear the optical assembly trying to move in and the gears start clicking. I’ve already cleaned the whole thing and I have found that if I press play right as the disk goes in it sometimes plays (it seems to like REM). I don’t know what to do from here. Thanks