Hi there guys and gals!So I have this fairly nice rc 656 jw.Here's the prob when I put the selector on tape it playes good and sounds good,however when I switch to radio all I get is a humm that gets louder as I turn up the volume and at no time does any kind of broadcast radio station voices or music come out.Just the humm.I tried hooking up my CD player to the line in,the humm is still present however I can here the music from the CD and in between the songs I can hear the humm at a lower level,but it's still there.Also I should note on radio,none of the bands AM,FM,SW1,SW2 is there any sound but the humm.Any help would be greatly apreciated,thank you.