Don't know about your particular fridge but with a lot of them the cover is only held in by a crosshead screw.Turn fridge off,remove screw and it will probably have a 'Pigmy' bulb in it,you can get them at any DIY store,they make a special 'Pigmy' bulb for fridges(it tells you on the pack)that is longer lasting to cope with the vibration and excessive number of times it goes on and off,but a standard one will do.Don't be afraid to have a look to see how to remove the cover and do it yourself,you don't need an engineer to change a bulb.
Rich t, January 2014