Hello, I have a Kenwood TM-261 rig that I'm having some trouble with. All of the function buttons on the front of the rig give me a warning tone when I push them. The only buttons that work are the memory scan button, the power button, the button next to the power button and that will only change the view from alpha display to the memory storage number. All other buttons when pressed give a warning beep. I was wondering if anyone else has had this trouble before? The radio is not locked but it's acting like it is. The radio is functional with what I have programed in but it would be nice to be able to get back into the menu functions when needed and to be able to use the VFO. I have tryed powering the rig on with another button pressed and none of them seem to do anything. I have taken the rig apart to see if a button was stuck and it does not appear so.