@graemet sounds like either a bad motor (bad start windings) or a bad start capacitor. If your model is a DEGX1 then there is no separate capacitor. Use the [document|42293] to work on that model dryer. Page 36 will tell you what to check.
If there is any doubt or if there is anything you need more info on, post some pictures of what your are looking/working on. that way we can see what you see and hopefully help you out further, [guide|21499]