My original factory radio/tape player has never worked right since I've owned it (2007). I get nothing out of the front dash speaker on either AM, FM, or Tape. Right rear works OK. Took it out, checked connections but still nothing. Replaced front dash speaker, still nothing. To my ignorant electrical mind, I'm thinking it is one channel in the amp. My old radio guru died last year, so now I'm up the creek to find someone to repair it in central NH (boondocks). Anyone got a reference or idea??? I'm trying to keep it as original as possible if that is not obvious with the overall quality of the unit being what is is.... THANKS in advance...Brian