i'm a Marantz fan so i purchased SR7500 around 5 months ago. my SR7500 have a small problem, the TUNED signal is not working, so i really can't listen radio FM.... it just happened this morning, all i can hear is BABABABABA sound... .. first time i experienced this sort of problem,, TUNED also got problem???? my old Kenwood never experience is problem b4. i called Marantz technician, they told me, they also never experience this kind of problem b4..... so weird..