Are you saying that you cannot get it to tune from the thumb controller on the handlebar or from the tuner itself? If it is on the thumbswitch, then you can take it apart and see if there is corrosion inside it. Mine was not working but after I cleaned it out, it started to work again. If you do take that apart, be careful because there is a spring and ball bearing in there that would be easy to lose.I checked the fuses a while back, but I will check again. What I did notice is the tuner is not working. I can't get any stations to come up. It has a switch for the tuner and also for mute. The mute button works the tuner don't. Not sure how to check this.
Have you tried both AM and FM? Mine works great on AM but not so great on FM. I need to take a look. Does anybody know if the antenna works for FM and AM or is the AM antenna internal like on home systems?It's got the power but no sound.:?
Does your radio unit look like this? If so, the two buttons on the upper right with arrows tune the radio. If it has those but they do not change the channel, then it could be that the buttons are worn out.I went inside the thumb switch, did not see any springs or bearings, just wires that looked fine. Did not find any controler on the radio itself, unless I am missing something, the only way I see to control the stations is by the thumb switch. There is plenty of volumn and static. It's just not changing stations. I had recently replaced the turn signal switch which had a cluster ##*!~of wires. It could be I may of missed or crossed a wire. There was one brown hot wire that I did not know what it was for, since there was nothing left to plug it into.