Can it run on batteries? Try those if it can.
Otherwise, check the adapter with a DVOM. If the voltage checks out then something internal has blown. See if there's a user replaceable fuse.
Beyond that, there's not much you can do other than take it in to a service center for repair.
If you live in a rural area or if there's been a recent lightning strike in your area a power surge may have blown it out.
Usually a good idea to run your electronic appliances thru a surge protector.
Gary
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)