FM static Bose

[usmc121581]

This is driving me nuts now. Bought this 2011 Altima July of 2014 with only 16K miles, radio FM channels came in clear up until about a couple months ago, now all i get,is static in the stations all the time doeant matter where or when,in the day. My maxima doesnt do this at all. Asked on a nissan forum and was told to take it and let a authorized nissan person find out whats wrong. I am,pretty handy at replacing parts if i know what to replace. Does any one know what it could be? Last car my 03 alero that did this it was due to,the power antennia amp in the back rear burnt out.