i bought my lancer DE 2008 used and i got it like this the the stereo sometimes the sound turns into mono, sometimes only the left side works and sometimes only the right side works, it doesnt matter if it is radio, cd or Aux input is being played still have the same sound output. sometimes both of them works and other side starts to fade until its gone and turns to mono. Do i need to replace my radio unit, or just upgrade it with aftermarket radio and get double din face plate. dont know if i can really fix the radio.