I went to go turn my Panasonic radio on and it wouldn't come on at all so I took it apart and I tested the selector switch cuz it was walled out with a screwdriver it seemed so I took it apart tested this later cuz it was all walls out the screwdriver it seems so I I tested it the continuity and there is none there's nothing but resistance so I'm feeling like that's the problem is that is that correct diagnosis or could it be something else