Munkhuu Saikh

I have 2003 honda accord, and the aux/cd button doesn't work. I have aux unit installed and when i plug it in, it charges my phone. But can't play music because aux button doesn't do anything. If i press the load button, it makes some sound, and says loading on screen, but then nothing again. If i press eject it doesn't do anything. Radio works fine, but just those button doesn't do anything. How to fix this? i tried checking if there is cd, and i put a tweezer, didn't feel anything.
Thanks.