I always play on my POD in my room, but I didnt till today and has been about 2 days untouched but in a safe corner in my room away from anything bad happening to it.

Im getting ready to play through my setlist and I play through some of my tones while messing around and its all perfect but when I go to the tuner and hold the tap it shows the tuner. I pluck a string making sure guitar volume is all way up and even the foot pedal up and no needle or even Note will come up. It displays a blank tuning screen as if my guitar knob volume was off. I tried messing and put like in knob in middle and footpedal even though I know foot pedal can be off and still tune.  Nothing worked. I turned the unit off and unplugged my cord going to amp to POd and cord from POD to guitar. It still plays normally but only function is the tuner wont function with a moving needle and a note of the guitar string being played.

Any suggestions would be appreciated. I never dropped it or spilled anything.