Just noticed, while plaiying with the dsp, if I set it to what I think is clock mode, I hear a signal every second, Sounds kind of like a 60 hz modulated tone. Is this normal, and if not, how to remedy? I suspect this occurs when I get the clock into set mode. Pressing the disp buttton again will illiminate this sound. Sorry, can't give any more details, can't see the screen.