Audio Systems: radio lights, stock radio, ford f250

Question
hello Ernesto hope U are doing well. i have a 1990 ford f250 stock radio with a caset player that dose not work,but i do not care about that. the knobs and buttons all have lights, but the digital display 4 time and station dose not light up. can this be fixed? if so how? radio works fine. thank U Ernesto! i hop U have a great day    LeRoy!

Answer
Open the radio  and look behind the small this play in the midle there is a small bulb that comes out from the back , remove it  and plug the radio again with a flash light from behind,
if you see the display the only thing you need to replace is that small bulb,
you can fin one at radio shack
good luck