Issues with Line 6 floor pod plus Any suggestions?

I can hear the different effects and amp mods when turning the knobs but when I plug into with my guitar I get nothing. The tuner dosent even seem to move when I pick a string. I have tried factory reset, different cables,guitars, and amps. I realize this thing is an outdated piece of equipment but since I have it and was trying to budget, I'd like to get it working. I had never had this problem in the past with it. Any suggestions are much appreciated.