Have you checked the heating element? When they get hot they are very fragile, even a thump on the side a the dryer can beak a hot element (personal experiance).To replace it you will have to disasemble the dryer, remove the drum and the belt. Give yourself plenty of work space. Call your local appliance repair shop and give them the make and model # and if they don't have the part they can get it.Follow the installation instructions that come with the heating element exactly or it can cause over heating witch leads to a whole new problem.Don't let that scare you the instuctions are very simple.Take care and I hope this helps.
Andrew
December 2004