electric range

Clock light and temp. light went out about 2 years ago, everything else works. Pulled range out to clean and unplugged it. Cleaned inside of oven now oven wont work. The smooth top works. No wires or elements is loose. When I press bake or any of the pad I hear 3 beeps. Cant see display because of light out. Do I have to replace the whole electronic control panel or is there a part to just fix the light so I could see error code and hopefully fix it.