My 3pk started flashing TRM on the screen and i now cant use the external buttons to adjust my trim. Does this sound like a wiring problem or is there a setting that i can change to turn the trim back on? i can still change the subtrim through the menu but cant use the buttons around the wheel to do it.

I wold put the radio back to factory setting like it say to in the book i hope you still got it if that dont work i dont know but if you figure it out let me know cause i have the same one

Page 22 describes trim and edit lock, hold the "-" button down for more than a second and TRM will disappear

thanks guys sorted