I have a GE Boombox model 3-6035B. Everything works great except for you get no sound when playing a cassette. You get sound from radio and aux but when playing cassette all you get is a hum. Everything is moves in play, rewind and fast forward like it sould but no sound. I cleaned everything I could with compressed air and rubbing alcohol but still no luck. Everything looks to be visually in good shape nothing broke in the mechanism also. Thanks for any help.