Robert digital radio Problems?

Hi All.
I have a roberts digital radio, which i haven't used for a year or so. My probem is,when i first switch it on,it sets up the time,date etc,(automaticaly) but as for the set up button, i can't seem to get nothing, no stations, even the manual preset buttons don't work.It has frozen on one station, and its says no information.
I have even tried the reset button.My radio is the rd-1 model. I would appriciate any help please.
Many thanks.
Charlie.